number 4 missed fire on 1999 Chevrolet Express 1500

number 4 miss fire i already replace all the fuel injector and did a full tune up on the van and its still say miss fire on number 4 i need help

by in Stone Mountain, GA on February 04, 2011
1 answer 4 comments
ANSWER by on February 04, 2011
I'm assuming you replaced the fuel injector sypder. When you say a full tuneup, you mean plugs and what.
COMMENT by on February 05, 2011
plugs wire cap button fuel filter that what i done for a tune up
COMMENT by on February 05, 2011
Based on what you have done a compression check on the effected cylinder would be the next step.
COMMENT by on February 05, 2011
done 120 psi whats next the brain
COMMENT by on February 09, 2011
Do you have more money than brains? Contact me at autoknowhow@gmail.com