Misfire, no codes

[911monty]

Originally Posted by Smallblock454

@911monty:

Good idea, but if he would have a low fuel pressure i think all cylinders/sparks would be affected the same way. Please take a look at the picture of the sparks (i know you did): Misfire, no codes

But maybe it's a good idea to check the fuel pressure too, because fuel pumps on these cars tends to get fatigue and the sparks look more black and white than brown.

Just my 2 cents.

Regards, Markus

Marcus your expert advice is most appreciated! In your previous reply you mentioned leaky injectors, I also think this is possible. This would cause some cylinders to run rich, confuse the 02 sensors causing other cylinders to run lean correct? There appears to be soot on the electrode also pictured indicating possible rich/misfire.