|
||||
|
Title: Pinking again....very annoying Post by jonnycab on Oct 22nd, 2006, 1:16am Anyone who has read my past problems with pinking will know what I'm talking about. But there are a few new members on here that may be able to offer some suggestions.....I hope. My 2.3 only pinks occasionally...but when it does, it annoys me & makes my new spark plugs go black (so a bit rich). The worst is No 4 plug which tends to build up hard carbon deposits >:( I've replaced the fuel rail pressure regulator & replaced it again as the first one I bought from FMD was faulty ??? New thermostat, new ECT, new IAT, new (second hand) EGR, cleaned MAF, no leaks on inlet manifold, all pipes to & from are split free, cleaned IACV & made sure it was seated back properly, new air filter, new (second hand coil packs), new plug leads, wiring loom not damaged, cooling system fine (did that a while back). The car runs fine 90% of the time.....but all of a sudden it will start pinking. It only does it when it's hot & under load on short journeys (local taxi runs). On a longer journey it may pink to start with but pinking will dissapear after a couple of miles. I thought of it being heat related, but dash temp dial is always slap bang in the middle. ???Can't work it out? ??? P.S....please don't suggest taking it to FMD for a diagnostic test,.... it is said......"the organ grinder allways sits back & lets the monkeys do the work" ::) |
||||
|
Title: Re: Pinking again....very annoying Post by Octavian_P on Oct 22nd, 2006, 1:39am You could try to give the injectors a cleanup...maybe there is some "dirt" on the injection ramp and clogs the injectors when the gas flow increases.....:-/ |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Oct 22nd, 2006, 1:41am Stuck injector cleaner in it a couple of times now.....no difference :( Tried BP Ultima as well.....still pinks :( |
||||
|
Title: Re: Pinking again....very annoying Post by Octavian_P on Oct 22nd, 2006, 3:54am I personaly don't belive in injector cleaner, i prefer takeing them off, old schoolt type, using a low current 12 power source to open them and then back-flush them with isopropilic alcohol. You say that the coil packs are new (old)....maybe they could be at fault ? like the fpr story ... :-/ try to borow from someone a good working ones and test them.... |
||||
|
Title: Re: Pinking again....very annoying Post by Atlantic_blue on Oct 22nd, 2006, 7:08am Perhaps a good old fashioned decoke. |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Oct 22nd, 2006, 10:36am If it were the coils packs then I would have expected a bit of mis-fire as a clue. Besides they were only replaced to see if there was any difference....there was no difference, so that means the old ones were fine. :) Good old fashioned de-coke...what, you mean take off head, strip it down and use a wire brush drill bit to get the carbon off the valve seats?......that is out of the question, it's too time consuming & I need my car everyday to earn a living. Anyway, if it were a heavy build up of carbon, then surely it would pink all the time :-/ Cleaning the injectors manually sounds like a good idea. I've never taken them off before....is it an easy job? |
||||
|
Title: Re: Pinking again....very annoying Post by scorpio_man on Oct 22nd, 2006, 5:03pm hi there have you ever had it scanned? might give more of a clue if there was an error code(s) or what the LTFT were at. hth |
||||
|
Title: Re: Pinking again....very annoying Post by Octavian_P on Oct 22nd, 2006, 6:43pm It took me about 30 minutes to get them off, this is all you need to know http://www.fordscorpio.co.uk/manual/fuel/Fuel16VInj.pdf well i overeacted a bit and to have more space i have disconnected the loom from the camshaft sensor / coil packs, intake tubing....a a few bits that where staing in my way. Take great care when takeing them out of the rail, the injectors are kind of stuked with some o-rings....and their casings are verry easy to break so don't use a screw driver to pry them out..... To give them a good clean, take a 9-12V power supply that has low corrent rating...something like maximum 500 mA ....and make some kind of contraption to flush the injector from it's nose (backwords). When current it's applied the injector is opened and flushing it backwords will get the dirt out of it Ps: you will see that the injectors have their own fuel filter...so the above step with current it isn't really necesarly. ;) |
||||
|
Title: Re: Pinking again....very annoying Post by hellblue on Oct 22nd, 2006, 8:54pm Have you tried a fuel additive to boost the octain rating?, do you get your fuel from the same place?,does it happen with fuel from one place?,are the spark plugs 100% the right ones?, you could try one grade colder plugs?. |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Oct 22nd, 2006, 10:37pm Hellblue...Yes, I've tried different petrol station & additives. The plugs are Motorcraft & are the right ones for the car (AGPS 22P1), & are brand new. :) scorpio_man....I haven't had it scanned by FMD but I do have a little autel scanner & that shows no codes. :)....It is looking like I'm going to have to bite the bullet & book it into FMD for a full diagnostic check. Thanks Octavian for the advice. I'm not convinced it's an injector problem, but I will still give them a clean anyway just to make sure. :) I'm going away to Spain on Thursday for a week, so everything will have to wait 'till I get back.... :) |
||||
|
Title: Re: Pinking again....very annoying Post by scorpio_man on Oct 22nd, 2006, 10:51pm hi there is there no one near you with an OBD-2 lead? i just want to see what the Long Term Fuel Trim is sitting at. unless it went to +/- 25% then there wouldn't be an error code. getting someone to scan it is the way to go. can you get to a meeting? hth |
||||
|
Title: Re: Pinking again....very annoying Post by Eric_R on Oct 22nd, 2006, 11:28pm Jonny, If I could just pop in a word here ... Although pinking can be caused by carbon build-up, from experience this causes pinking worsening on long journeys as the carbon starts to glow with heat, so your symptoms don't fit with that. Looking for error codes won't necessarily help, because OBD will only register a code if the FUEL system registers parameters well outside normal - ie when both the STFT and the LTFT are maxed out (exceeding about 25%) and other Monitors happen to be running at the time, like the EGR. You were right to suspect the fuel rail pressure regulator (FRPR) because that is the most likely cause - but that has been replaced twice and you're confident that it is ok. Taking the car to an FMD might not be useful; their diagnostic machine is a pain to set up on the move and it takes skill to scan the relevant sensors - even if they know what to look for on a Scorpio. MAy I suggest another alternative - meet with another owner with an OBD lead and run a scan, particularly covering the time the engine is pinking. There can be several causes: 1. MAF reading wrongly, (Intermittent fault in MAF or the wiring loom to it) 2. INJector sticking open (over-rich mixture detected by both HO2S sensors and the FUEL is leaned off too much - although normally idle will be poor and you don't mention this. 3. EGR sticking open, admitting air and leaning off mixture (although a DTC might be expected the EGR Monitor only runs once during an OBD trip so might have missed it) 4. Loss of sensor input from the FCO loom, although you said you had replaced this wiring and the Comp Component Monitor should have detected this and posted a DTC. There is an issue with the plastic inlet manifold, too. One some 2.3 engines this has been found to crack, letting in unmetered air and leaning out the mixture too much, so check the inlet manifold very carefully for any sign of cracking or staining, including underneath. When cold the crack might be closed and the fuel is rich for cold-running - but as the engine heats up the crack may be opening and would be more prone to affect the leaner fuelling for hot running. If you're sure it's not the inlet manifold, if you could get a scan done as it's pinking, selecting the following, SPEED RPM MAF LOAD first for a minute or so, then save the scan, then another, RPM HO2S1 HO2S2 LTFT1 LTFT2 for two minutes or so, then save it and then IAT ECT and in the Enhanced page select LOOP EGVR DPFEGR for a further few minutes. With those scans we should have a much better idea of what is going on. HTH |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Oct 23rd, 2006, 1:25am Eric...I didn't say I had replaced the FCO loom, I said it wasn't damaged :) I have had problems with the inlet manifold in the past, around the ECT hole (leaking), but I managed to fix this properly with a hot knife & quick steel....so it doesn't leak anymore. This part of the manifold is sectioned off from the main part, so I don't think I have a problem there. I've not had a good look at the underneath of the inlet manifold....it's a bit difficult due to lack of light & obstructions (looking from underneath) such as starter motor & oil filter etc. The idle is a little jumpy sometimes when hot (when I say a little, I mean a LITTLE, like the odd hiccup) but this seems to pass. The MAF looks (visually) okay....looking at it with a magnifying glass the tiny little strands of wire have no breaks & are are nice & clean.....sprayed it with carb cleaner before inspecting ;) I am starting to wonder....the car has 148 K miles now. When I bought it in February there was 131K on it. The engine was replaced (by previous owner) at 98K. The engine looks new, but most of the components look original. I am wondering whether new gaskets were used when fitting the old inlet manifold back on....or maybe they just used the old (stuck on) ones to save money :-/ Not heard of anyone in the Essex area with the proper OBD stuff....you all seem to be up North ??? |
||||
|
Title: Re: Pinking again....very annoying Post by howiedintheplace on Oct 23rd, 2006, 8:41am A leaking inlet can cause your problem but you do really need to get the car scanned now to move forward. |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Oct 23rd, 2006, 11:09am The local car spares has put me on to someone who they think might be able to do a thorough scan.....so fingers crossed ;) Will get it done as soon as I get back from my short holiday :) |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Oct 25th, 2006, 2:59am A quick update.....well long one really.... ::) Monday afternoon, had the bonnet up again ::)(no wonder the neighbours never ask me to take them to the airport }{) having a good look around, when I remembered reading somewhere (some Scorp review, can't remember where) that the pcm can be prone to problems.....(I had thought of this before, but thought..."nahhh") I've never fiddled with the pcm before, & being of a curious nature, I decided it would be a good idea to take it out, open it up & see if there was any obvious visual problems...like a blown resistor/capacitor etc (remember reading Darrens (sector9) pcm repair page). So off came the battery & out came the cordless & I proceeded to drill out the rivets. Once the casing was released I pulled out the pcm..... Now, having read the page on here about removal, it mentions that the 10mm nut has to be undone to remove the multiplug. Went to fit the 10mm socket over the nut when I felt it was loose...so loose in fact, that it only took one turn to release it from the thread, & pull the multiplug off. ??? I checked the pcm pins & none were bent so fitted the multiplug back on & did the 10mm bolt up. Whilst doing the bolt up, it was then that I realised that the multiplug was going a lot further in than it was originally seated. ??? So I'm thinking....maybe there was a continuity problem....a pin or two intermitantly disconnecting....& that's what is causing the intermitant pinking ? :-/..... Well...went to work Monday night & didn't hear any pinking, but put that down to the fact that it was lashing down with rain all night ::), so had the windows done up. But tonight was dry, so I had the window down when I could & there was no pinking.....only a very slight knock/quick crack when flooring it at say...30 mph before it kicks down :) Could the loose pcm multiplug have been the reason for the pinking......or was it just that I diconnected the battery (again), & once the pcm re-learns all it's parameters it will start rattling again. ???....fingers crossed eh :) Anyway, just got Wednesday night to get out of the way, & hopefully no pinking, & I'm off to sunny Spain Thursday morning.....so I can forget about my Scorp woes & rent a little Seat Ibiza for a week :)....I'll be listening for pinking though ::) |
||||
|
Title: Re: Pinking again....very annoying Post by howiedintheplace on Oct 25th, 2006, 11:03am Certainly could do it. It's the bolt that pulls the connector on to the ECU as you say. So it could be some conectors where not even touching. Lucky you checked as it could have threw up all kinds of false codes on a scan. Fingers crossed ;D |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Oct 25th, 2006, 11:15am Didn't have any fault codes though (using the Autel Geniscan)..........the only one I ever had was P0171 which related to the (new) dodgy fuel regulator. :) |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Nov 19th, 2006, 12:49am Okay.........update. :) It was nothing to do with the loose pcm bolt.....pinking came back after pcm had re-learned it's values after re-connecting battery. I'm thinking that it may well be a local petrol retailer problem. ??? If I fill up at my local Total garage, then it pinks. If I fill up at my local BP garage, then it pinks intermittently. If I fill up with BP Ultimate, then I get no pinking at all. ??? So I conclude that this car likes 97 octane.....but why?....The car doesn't seem any faster & it deffinately costs more in fuel. Or is there an adjustment switch on the Scorp (like there was on the early Mondeo) that allows you to run on cheap European (92 octane) fuel that I've overlooked? ??? |
||||
|
Title: Re: Pinking again....very annoying Post by harry.m1byt on Nov 19th, 2006, 8:49am on 11/19/06 at 00:49:28, jonnycab wrote:
I would look for the octane adjuster plug and check its setting. The Granada had one too, but from memory it only adjusted it from the basic 93 octane down to an even lower octane fuel. |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Nov 19th, 2006, 11:17am on 11/19/06 at 08:49:12, harry.m1byt wrote:
What?....is there an octane adjuster plug somewhere on the Scorp?....I've not found one yet :) |
||||
|
Title: Re: Pinking again....very annoying Post by scorpio_man on Nov 19th, 2006, 12:55pm hi there there's no adjustment on the scorpio. fueling is all controlled by the ecu. when changing fuel, did you run with the same stuff for at least 3 full tankfulls? you need do this to wash out all the old petrol. then check your mileage, etc. did you ever manage to get a scan done as per eric's instructions? it would be good to look over the data. hth |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Nov 20th, 2006, 2:09am No...not had a scan done yet. The guy that was recommended to me by my local car spares said he didn't have the right software (he called it stuff) to do a proper scan. Oh well, I suppose I'll have to stick to BP Ultimate for the time being..........until it starts pinking on that as well ::) |
||||
|
Title: Re: Pinking again....very annoying Post by Octavian_P on Nov 27th, 2006, 9:15am Sorry to reopen this thread but the octane selector hunts me. Accidently looking over a 2.3 schemathic i found this http://i35.photobucket.com/albums/d190/Octavian_P/2-1.jpg W21 - octane selector Investigating a bit i also found that the BOB engine has it http://i35.photobucket.com/albums/d190/Octavian_P/2.jpg W21 - octane coding plug |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Nov 27th, 2006, 10:33am Interesting.....I'm not all that good with schematics...... How do you know that W21 is an octane selector ? :) |
||||
|
Title: Re: Pinking again....very annoying Post by Octavian_P on Nov 27th, 2006, 9:18pm Sorry for the small pictures...couldn't capture bigger screen shots... ;D When you click on them, the red bar upwards it writes the component's feature / function ::) Now, all we have to do is figure out where that plug or selector is :P Cheers |
||||
|
Title: Re: Pinking again....very annoying Post by mike on Nov 28th, 2006, 1:11am According to FTIS: "Pin 30 of the PCM measures the voltage drop across the octane adjust plug (D2) and uses this information to modify ignition spark advance". This thing is supposed to reside on the bulkhead, next to the battery (white/black and brown/yellow wires). Apparently it is some calibrated resistor. What if the value drifts, or if the plug contacts become oxidized? This could fool the PCM and induce pinking. In any case it would be interesting to measure this resistor on our cars and post the result. I will report on mine before next week-end. Cheers, Mike |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Nov 28th, 2006, 9:10am I wait, with baited breathe :) Quick update...have disconnected the EGR vacuum hose & plugged it. This seems to have helped & the pinking is now only very slight (quick crack) when flooring accelerator. Weird thing is...I've done this a couple of times before & it never made any difference ??? |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Nov 29th, 2006, 11:32am on 11/28/06 at 01:11:09, mike wrote:
I've not seen anything near the battery that fits the description, so I'm assuming, if it exists, then it must be very well hidden :) |
||||
|
Title: Re: Pinking again....very annoying Post by mike on Dec 1st, 2006, 12:10am on 11/29/06 at 11:32:22, jonnycab wrote:
O ye of little faith! :o EXHIBIT: http://www.adrienne.fr/pictures/OctanePlug1.jpg And in situ (I removed the battery): http://www.adrienne.fr/pictures/OctanePlug2.jpg Mind you, this is a LHD car so yours may be in a different location. This high tech contraption has a triangular section with 2 prongs. It was subjected to a series of tests under the most stringent scientific criteria ;): Resistance: 0 ohm (accuracy 1%) Testing equipment: cheapo DVM, made in China Test conditions: 5°C, atmospheric pressure 1010mbar, 95% humidity, mild Northwesterly breeze, fog patches. As you can see from the pictures, it is but a strap! Cheers, Mike |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Dec 1st, 2006, 12:23am Nice one Mike :)...........I'll have a look for it on the RHD 2.3 :) |
||||
|
Title: Re: Pinking again....very annoying Post by Tompion on Dec 1st, 2006, 12:41am Hi jonnycab Wondered what that was, it's lowdown on the wing ahead of the battery in the area of the oxygen sensor plug (or at least it looks the same). Dave |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Dec 1st, 2006, 2:21am Cheers Tompion.........I'll have a look tommorrow :) |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Dec 2nd, 2006, 2:44am Found it I think...about ten inches below the EGR transducer, mounted onto the body. It has a small length of wire at the end joining two connections on it. If it is indeed an octane plug, then how would you test it to see if it is working correctly? Then again, being such a small part, it probably wouldn't be that expensive to take a chance & just replace it, & see what happens :) |
||||
|
Title: Re: Pinking again....very annoying Post by Octavian_P on Dec 2nd, 2006, 9:55am I think the best thing is to disconnect it, unplg the battery, plug the battery, drive it for 8 km, afther that a difference shoud appear.... We thank you mike !!!, thoes pictures are worth more than 1024 words !! (each !!!) ;) By the way, which is the default octane level for the connected plug ? or for the unconnected ? Hmmm...this gives me an ideea if we plug in a variable resistor ? we could tune the advance depending on fueling (quality). Cheers |
||||
|
Title: Re: Pinking again....very annoying Post by scorpio_man on Dec 2nd, 2006, 11:05am hi there are we sure about this? i though this plug was for the 'missing' rear lambda sensor on the 2.3. could be wrong, though! :-/ |
||||
|
Title: Re: Pinking again....very annoying Post by Octavian_P on Dec 2nd, 2006, 11:29am I'll try it on the 2.3 in a few days, also i'll check if the cossie has one ::) |
||||
|
Title: Re: Pinking again....very annoying Post by Kjetil S on Dec 2nd, 2006, 5:05pm My 2.0 16v has one atleast. According to the Ford T I S wiring diagrams, there really is one (connected to the PCM with two wires) Edit: but couldn't find it in microcat |
||||
|
Title: Re: Pinking again....very annoying Post by mike on Dec 2nd, 2006, 9:08pm Yes, the wires are White/Black and Brown/Yellow. American forums mention this octane plug on Ford Ranger trucks (which are powered by the "same" 2.3 and 2.9 engines as our Scorpios, with EECV management). And just like ours it is a shorting plug. The general consensus is that ignition gets retarded by 2-3 degrees when you remove it but that performance and mileage suffer (which is hardly surprising..). There is even a Ford TSB which says to remove the plug in case of pinking. It's probably a good idea if you accidentally fill up with low octane gas, as pinking is really bad for the heads. But the pinking should not persist with "good" gas. Jonnycab, have you tried an Italian tuneup? Cheers, Mike |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Dec 3rd, 2006, 12:35am An Italian tuneup...what is that? A Ford TSB that says to remove plug incase of pinking ???....not heard that one before :-/ The lowest octane petrol available in the UK is 95 octane, which makes it pink....but 97 octane doesn't cause pinking :)....it's a bit expensive though :( P.S. disconnecting the EGR vacuum pipe ( again) only stopped the pinking for a couple of days....it's back again >:( |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Dec 3rd, 2006, 12:43am Tomorrow, Sunday,.....I will disconnected this plug & see if there is any difference :) Also I will take a note of the part number & ring FMD on Monday morning & find out exactly what the part does :) |
||||
|
Title: Re: Pinking again....very annoying Post by Kjetil S on Dec 3rd, 2006, 12:45am Sounds like the engine management might be compensating... |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Dec 3rd, 2006, 1:11am I've always thought the that PCM could have been at fault, (tried everything else) ::) I always presumed that octane values were preset in the PCM, but this so called octane plug has me baffled ? It makes sense if you think about it......The Mondeo has an octane adjustment....so why not the Scorpio.... My 1998 facelift was one of four given to West Ham football club by Dagenham Motors..... The V5 states that the engine size is 2306cc & not 2295cc....although it has had a new engine fitted at 98,000. The current mileage is 149,000. Is it a possibility that the original engine size was not a typo error, but true, & the new engine is a bog standard 2.3.............but the PCM is the original ? Or that a certain number of facelift models that left the plant & were exported to the UK had Euro octane plugs fitted........that may explain why the original engine was replaced at only 98,000 miles :-/ |
||||
|
Title: Re: Pinking again....very annoying Post by scorpio_man on Dec 3rd, 2006, 11:41am hi there anything is possible, i guess. ??? i never heard anyone say anything about the 2.3. ford/cosworth did mess about with the 2.9 24v (think it was the boa engine), so they could have done the same to the 2.3 (cosworth did some of the work on the 2.3). maybe you have the engine or ecu from a galaxy? all the bits attached to the engine look different. engine looks the same, though (just round the wrong way! ;)) |
||||
|
Title: Re: Pinking again....very annoying Post by mike on Dec 3rd, 2006, 11:49am on 12/03/06 at 00:35:28, jonnycab wrote:
Italian tune up: find a quiet stretch of road, select first or second gear and run at 5000rpm+ for ten minutes. You may get a lot of black smoke at first as carbon deposits loosen from the combustion chambers. Not for the faint of heart but very effective! Quote:
I was'nt clear: this TSB is for US Ford Rangers. I only mentioned it as circumstancial evidence that removing the plug retards ignition. It seems this octane "adjust" feature is a rather crude one: either the plug is in, shorting pins 30 and 91 on the pcm (normal timing), or it is removed (retarded timing). Cheers, Mike |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Dec 3rd, 2006, 12:05pm http://i70.photobucket.com/albums/i101/jonnycab/PC030001.jpg http://i70.photobucket.com/albums/i101/jonnycab/PC030004.jpg Took it out & taken the car for a short run......no noticable difference, but the car was hardly hot enough. The real acid test will be tomorrow (Monday) night on the rank :) Not sure I want to try the Italian tune-up....I fear she won't take it. The Trekkie phrase...." I canny hold her for long captain....she's breaking up"...springs to mind ;D |
||||
|
Title: Re: Pinking again....very annoying Post by Octavian_P on Dec 3rd, 2006, 9:09pm on 12/03/06 at 12:05:24, jonnycab wrote:
The dilithium matrix is overloading, the plasma (intake) mainfold could blow up any time now (spreading coolant all over the place) ;D I have tried on mine today (to remove the plug), my first impresion is that the pinking got worse :P PS: for cossie owners, on the left hand drive version the plug is in the same place ;) |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Dec 8th, 2006, 2:46am Well.....after 4 days of driving (500 miles) with the so called 'Octane plug' taken out... Pinking has deffinately lessoned but mpg is worse & feels a little sluggish as well...... Just out of interest....does anyone know the PCM model number for a Feb 1998, 2.3, facelift ?.....so I can check to see if mine is the same...........the reason being is...... I bought a 2.3 PCM off Ebay a while back, but it has a different model number ::) |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Dec 10th, 2006, 2:06am Since I started this post, my pinking has seemed to have lessened as the weeks have gone by. It was like an old Cortina (pinking every time you accelerated), but is now a quick crack on acceration under load. A recent theory about a supposed octane plug...that, if taken out can reduce pinking, turned out to be another experiment which didn't seem to solve the matter. It seems that everytime I replace/remove something, the pinking goes, but comes back....but everytime it isn't as bad. So it's deffinately getting better as time goes on..& since I fitted this Fuel Cat......... http://i70.photobucket.com/albums/i101/jonnycab/P9240010.jpg When I bought the car it didn't look as though it had a service since the new engine was fitted (34,000 miles). It's a possibility that without servicing, the engine would have coked up badly. :P I fitted the Fuel Cat because it was supposed to clear carbon from the engine & increase mpg & power output.....(these things were used on WW2 Spitfires to reduce smoke trails)....so maybe it really is doing what it's supposed to do. Perhaps it is just a build up of carbon that is the source of the pinking (did notice a bit of white smoke coming out recently) ::) I checked the spark plugs today, & they weren't black like the last time I checked them (2000 miles ago).....just light brown/grey deposits....& according to the old Haynes manuals.... ...Ideally suited to engine :) |
||||
|
Title: Re: Pinking again....very annoying Post by mike on Dec 10th, 2006, 10:52pm Well, that's good news! The odds are your engine got coked up from too much leisurely city driving and too many short trips where it ran rich while barely getting to warm up. All these deposits are now being slowly released. Some more spirited driving should clear it up completely. ;D In the previous century, if you had downdraft carbs you'd remove the air filter and slowly pour down some water while opening the throttle to prevent the engine from choking up. The amount of crud that would spew out the exhaust was quite amazing... Those were the days! 8) Cheers, Mike |
||||
|
Title: Re: Pinking again....very annoying Post by Simmo on Dec 11th, 2006, 7:37am If you used Redex you could make a smoke cloud that would fill a dual carriageway!!. :o |
||||
|
Title: Re: Pinking again....very annoying Post by sector-9 on Dec 30th, 2006, 2:00am So do you think it's related to ignition timing? Darren |
||||
|
Title: Re: Pinking again....very annoying Post by jonnycab on Dec 30th, 2006, 2:42am Darren......do you have a theory? :) |
||||
|
Ford Scorpio Forum » Powered by YaBB 1 Gold - SP 1.3.1! YaBB © 2000-2003. All Rights Reserved. |