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paulscorp
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2.3 Misfire
« on: Oct 1st, 2005, 12:54pm »		 Quote Quote Modify Modify Remove Remove
Hi guys,
 
well i have just cleaned the MAF and ICV which were both a little sooty and blackened, all nice and shiny again now but hasn't made the slightest difference to the misfire. Its not even a regular misfire just misses a beat now and then. Also if i rev the engine to about 2000rpm and let off, then when its almost idled i give it some hard throttle it all but dies and once even stalled - related?
 
I've just given it a service (plugs oil etc etc) as i thought it would help. Not long had new coil packs so these should be ok and the leads and wiring look good too.
 
Could it be lambda sensor?
 
So, 2 lifelines gone, now its ask the audience  Cheesy any help/ideas appreciated
 
regards
 
Paul
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scorpio_man
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Re: 2.3 Misfire
« Reply #1 on: Oct 1st, 2005, 1:03pm »		 Quote Quote Modify Modify
hi paul
 
check the sparkplugs! they have a habbit of loosening off. i get a misfire every now and again, more so on lpg. i just tighten up the plugs again (check the gap at the same time Wink), job done 'till the next time.
http://www.fordscorpio.co.uk/manual/engines/dohc2_3/2300Specs.pdf
 
hth
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paulscorp
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Re: 2.3 Misfire
« Reply #2 on: Oct 1st, 2005, 1:12pm »		 Quote Quote Modify Modify Remove Remove
Right off to get some feeler gauges and see what that does, cheers
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admin
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Re: 2.3 Misfire
« Reply #3 on: Oct 1st, 2005, 5:06pm »		 Quote Quote Modify Modify
Sounds also like a possible air leak - have you used an OBD2 scan on it? Check all the vacuum lines for leaks - get a cheap stethoscope as they are a great way to detect leaks and strange noises.
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paulscorp
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Re: 2.3 Misfire
« Reply #4 on: Oct 1st, 2005, 5:29pm »		 Quote Quote Modify Modify Remove Remove
Hi admin
 
thanks for reply, no not had obd2 scan done yet, i know this is the wrong section but if anyone knows anyone in south east kent area that can do it that would be great. As for stethoscope i'm not sure i'd know where to start and what to be listening for
 
regards
 
Paul
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scorpio_man
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Re: 2.3 Misfire
« Reply #5 on: Oct 8th, 2005, 1:30pm »		 Quote Quote Modify Modify
hi paul
 
any luck on your misfire?
 
just another couple of things to check.
 
plug gaps need to be spot on....1.0mm
 
exhaust manifold for cracks. see http://www.anyboard.net/autos/cars/scorpio/posts/21.html
 
hth
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paulscorp
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Re: 2.3 Misfire
« Reply #6 on: Oct 8th, 2005, 1:36pm »		 Quote Quote Modify Modify Remove Remove
hi thanks for additional info, no still no luck with misfire, lining up to do the rewire on loom this weekend. Its funny you should mention exhaust manifold, because although i dont think its cracked i do seem to have a small blow near to the manifold of immediately after the cat. Also, recently changed the plugs but wasn't maticulous about the gap, didn't realise the scorps were that fussy lol, so i guess i better sort both of those before i go any further
 
regards
 
Paul
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