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Topic: Timing chain rattle on 24V? (Read 1854 times) |
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tlundkvi
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Ex. Scorpio 2.9 24V -95
Posts: 909
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Timing chain rattle on 24V?
« on: Oct 12th, 2009, 7:54pm » |
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Can somebody describe how the "classical" timing chain rattle should be like? Should the most significant sound be a metal knock at 1-3 seconds interval on the top RHS section that disappears after a while?
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amigafan2003
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Re: Timing chain rattle on 24V?
« Reply #1 on: Oct 12th, 2009, 8:47pm » |
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Any longer than a few seconds on cold startup is bad. If it rattles whilst warm or after initial starting that's bad as well.
Air con compressors can rattle sometimes - switch the A/C off to make sure it's not that.
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gozz
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Re: Timing chain rattle on 24V?
« Reply #2 on: Oct 12th, 2009, 11:42pm » |
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tlundkvi.
The sound of a 24v loose chain is best described as a metallic growl.Most of them seem to do it when starting from cold for a second or two,but then no more for the rest of the day,it is of course due to oil draining from the chain tensioners.
GOZZ.
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tlundkvi
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Ex. Scorpio 2.9 24V -95
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Re: Timing chain rattle on 24V?
« Reply #3 on: Oct 13th, 2009, 8:27am » |
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The sound is only at startup and disappears pretty quickly. I've heard the sound only in the evening after 24h standing still. Outside temp is also at night around 0 C. This morning there was nothing. Does anybody know, for sure not recommended, but is it a big difference in doing tensioners+related alone vs. tensioners+related + chain (if it comes down to some parts are not available).
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Baz
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S Reg. 1998 24v Cosworth S2.9 COS (Deceased)
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Re: Timing chain rattle on 24V?
« Reply #4 on: Oct 13th, 2009, 10:57pm » |
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Try putting your foot hard down on the accelerator pedal and turn the engine over with your foot pressed to the floor. The car will not fire and it will put oil back into the tensioners...... Worked fine for my cars!!
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lesterlad aka Rodders
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2.3 Ghia x Estate (Manual)
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Re: Timing chain rattle on 24V?
« Reply #5 on: Oct 13th, 2009, 11:16pm » |
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on Oct 13th, 2009, 10:57pm, Baz wrote:| Try putting your foot hard down on the accelerator pedal and turn the engine over with your foot pressed to the floor. The car will not fire and it will put oil back into the tensioners...... Worked fine for my cars!! |
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Would that not cause "flooding" therefore making it difficult to start normally ?
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scorpio_man
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Ford Kuga awd
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Re: Timing chain rattle on 24V?
« Reply #6 on: Oct 14th, 2009, 7:18am » |
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on Oct 13th, 2009, 11:16pm, lesterlad wrote:
Would that not cause "flooding" therefore making it difficult to start normally ?
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hi there
no, when the WOT relay is activated, the ECU switches off the injectors, so the car won't start.
*** try it out on a warm car first! you don't want to try it on a cold engine only to find the WOT relay isn't working and the engine fires at 6k rpm!  you won't have an issue with timing chain rattle after that!  ***
hth
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tlundkvi
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Ex. Scorpio 2.9 24V -95
Posts: 909
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Re: Timing chain rattle on 24V?
« Reply #7 on: Oct 14th, 2009, 11:30am » |
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If it passes with light throttle, why use full 
Does the oil matter with respect to the tensioners' functionality? I use Mobil 1 ESP FORMULA 5W-30, which is considered top range. Would the considerably cheaper Ford Formula F 5W-30 Synthetic be a better bet, oil change is due within a month anyway. Levels are fine, colour IMHO quite normal. I would even consider 0W-30 because of the colder northern climate.
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Geoff_W
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98 Ulti2.5tdi Auto
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Re: Timing chain rattle on 24V?
« Reply #8 on: Oct 14th, 2009, 6:40pm » |
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Because you need the WOT (wide open throttle) relay to activate to cut the fuel to the injectors so it does not start
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Baz
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S Reg. 1998 24v Cosworth S2.9 COS (Deceased)
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Re: Timing chain rattle on 24V?
« Reply #9 on: Oct 14th, 2009, 9:29pm » |
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What Geoff said!! 
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gozz
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Re: Timing chain rattle on 24V?
« Reply #10 on: Oct 14th, 2009, 11:05pm » |
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WOT Geoff said even
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a900one
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A scorpio is for life not just for christmas
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Re: Timing chain rattle on 24V?
« Reply #11 on: Oct 16th, 2009, 5:25pm » |
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If I drive into my drive the front rh corner is lower than the rest of the car and I dont get the rattle, hows that work ?. 
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Basil100
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Re: Timing chain rattle on 24V?
« Reply #12 on: Oct 23rd, 2009, 6:32pm » |
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Because the rh camshaft chain tensioneer is still just immersed in oil thus does not drain out the same.Prooves that it is the rh cahain tensioner which is the weak link.
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tlundkvi
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Ex. Scorpio 2.9 24V -95
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Re: Timing chain rattle on 24V?
« Reply #13 on: Oct 23rd, 2009, 8:22pm » |
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Basil, do you know whether the tensioners can be replaced without taking the whole front of the engine to atoms? All parts are hard to obtain, it might be not all parts required can even be bought.
BTW, no hint of rattle for a week on cold start, changed the oil on Monday.
Edit: But having said that, knock on wood, it will be back tomorrow.
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tootman318
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Leicester City Forever
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Re: Timing chain rattle on 24V?
« Reply #14 on: Oct 23rd, 2009, 9:08pm » |
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left hand one is easy. right hand one is between the v. blocked in by coolant housing. but you can make your own gaskets and the o ring is available from plumbers merchants. not too bad a job really
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tlundkvi
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Ex. Scorpio 2.9 24V -95
Posts: 909
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Re: Timing chain rattle on 24V?
« Reply #15 on: Oct 23rd, 2009, 9:41pm » |
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You mean seen from the front left side (alternator side) as from this picture nr. 4?
http://www.elcats.ru/ford/Parts.aspx?Model=84&Group=00400008&AtI d=24028
The actual tensioner (15 in figure), is it accessible somehow from the side, and how does it attach to the blade? Can't really make from the figure where it goes.
It think the ticking I heard could also come from the chain hitting nr. 5 guide. It was not completely with regular intervals, maybe once per 2 seconds.
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gozz
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Re: Timing chain rattle on 24V?
« Reply #16 on: Oct 24th, 2009, 12:52am » |
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tlundkvi.
The tensioner plungers are withdrawn (locked back) for removal with an allen key after removing the centre bolt.The right hand (drivers side) is buried behind the alternator,and the left one is as stated is in the V underneath the intake manifolding,neither of them may be described as very handy !!
GOZZ.
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tlundkvi
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Ex. Scorpio 2.9 24V -95
Posts: 909
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Re: Timing chain rattle on 24V?
« Reply #17 on: Oct 24th, 2009, 4:40pm » |
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But if this is a couple of hour job (as stated in the 24V timing chain section) it could be something to really consider, especially if they're accessible from the outside. The tensioners, they are then just pushing the blade and not fixed to them?
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tootman318
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Re: Timing chain rattle on 24V?
« Reply #18 on: Oct 24th, 2009, 5:24pm » |
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on Oct 24th, 2009, 4:40pm, tlundkvi wrote:| But if this is a couple of hour job (as stated in the 24V timing chain section) it could be something to really consider, especially if they're accessible from the outside. The tensioners, they are then just pushing the blade and not fixed to them? |
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yes, they just push against the blade. mine were ok to do as engine was out. very tight access when engine still in car!!!!
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a900one
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A scorpio is for life not just for christmas
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Re: Timing chain rattle on 24V?
« Reply #19 on: Oct 25th, 2009, 1:06pm » |
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Has anyone repaired/cleaned with any good results one of these tensioners, or it just a mater of replacing them.
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