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Bank 1 and 2 running lean new intake manifold gasket new fuel pump and filter
2003 Chevrolet Silverado SS

Bank 1 and 2 running lean new intake manifold gasket new fuel pump and filter

(2003 Chevrolet Silverado 1500)
Starts running rough when it gets up to temperatur
How long have you had this problem? A few months
Tags: chevrolet, silverado ss
2 answers & 0 comments
Popular Answer
on June 14, 2019

After a complete professional scan test for monitoring related live data with engine on - from COLD start throughout warmup - including test drive - - using same professional quality scanner + fuel pressure gauge - - perform fuel injector balance test..

Not necessarily concerned about engine trouble codes - diagnostic testing MUST take top priority!

IF testing results warrant - smoke vapor testing is a superior and safe method of locating vacuum leaks.

Impossible to guess at it with any inclination of accuracy.

Good luck!
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General Diagnosis
$88 - $111 Learn More
on June 14, 2019

After a complete professional scan test for monitoring related live data with engine on - from COLD start throughout warmup - including test drive - - using same professional quality scanner + fuel pressure gauge - - perform fuel injector balance test..

Not necessarily concerned about engine trouble codes - diagnostic testing MUST take top priority!

IF testing results warrant - smoke vapor testing is a superior and safe method of locating vacuum leaks.

Impossible to guess at it with any inclination of accuracy.

Good luck!
Sign in to reply
on June 14, 2019
Check for vacuum leaks again. Make sure fuel pressure is about 55 psi and check plugs. You may have a dead coil.

Alex
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