Enging Misfire

Jul 22, 2003 3 Replies

have a '96 SL2 5 speed with 137,000 miles on it.



Every once in a while (every couple of days), it misfires. It acts like it is hitting the rev limiter even though it is at idle or barely above. This only happens when it is stopped. As soon as I step on the gas and start moving again, it smoothes out. There is no MIL illuminated.



I changed the following at 120,000 miles:



Spark plugs, wires, fuel filter, air filter.



Both O2 sensors have been changed between 115,000 and now.



Any clues?



TIA


above. This

What are you setting the spark plug gap at? (Should be .040")

Did you arrange the 1-4 plug wires correctly?

This link might give you some useful information

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Good Luck & Best Wishes,

Ken

I had the exact same thing, turned out that one of my 4 plugs had died (even though they had been changed about 12000 km earlier) so they replaced it and the wires and all was good.

Wurm

Try some good strong fuel injector cleaner.... or get them professionally cleaned. Gummed up injectors can cause an engine to miss at idle if it's dirty enough becuase the injection pressure is much lower than when at speed.

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