Enging Misfire

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

 

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
http://www.magnecor.com/magnecor1/techbulletins/techsat.htm

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.