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#1
05-12-2004, 08:48 AM
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Engine mis fire at low revs 300CE Coupe
Hi,
I have an '89 300CE Coupe 3sp Auto. At low revs and worse when engine is warm I get a bad mis fire - the engine has no power at all. The only way to get going is to use very light throttle to get the speed and revs up a little or use low range - once over about 1500rpm it performs fine with no hint of the problem. Also the car is a little reluctant to start - have to use lots of pedal I'm suspecting high tension plug leads - am I correct? Cheers Rich Last edited by crazyquiff; 05-12-2004 at 09:09 AM. 
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#2
05-12-2004, 03:49 PM
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Check your plugs, if one of them is moist your head gasket is gone. I just replaced one on my 92 300 CE that had the same problem.
Cheers, Steve
__________________
97 S500 Coupe 139Kmi. 92 300CE 150Kmi. Sold 89 F250 Diesel 220Kmi. Dead 98 GMC 1500 160K.
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#3
05-13-2004, 03:43 AM
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Steve,
Thanks for the note. I've also read a post about the cold start injector leaking and causing the problem - checked that last night and doesn't seem to be the case. But, Steve, I can't get the logic behind the head gasket being the problem. The symptoms just don't seem right to me. I suspect maybe a vacuum leak somewhere. Could you have corrected the problem while changing the gasket? Has your problem been totally solved now? Was it exactly the same? Cheers Rich
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#4
05-20-2004, 08:52 AM
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Problem sorted - damp in the dizzy cap - so i dried it out and cleaned up all the posts and rotor arm.
No cost solution!
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