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1999 Chevrolet Tahoe Repair Question


Topics covered: Compression, Door, Piston.
Mileage: 200,000 miles.

Asked on June 29, 2011

Number 4 misfire

1999 Chevy Tahoe V8 4x4 with tow package 4door. Misfire on number 4 piston. changed plugs, plug wires,dist cap and roter button. runs rough at idle but good at highway speeds.
Avatar Asked by mllane

Answer

Replied on June 29, 2011

Check the compression and injector for no.4 cylinder

Tiny Answered by rasmataz
68 questions asked
Replied on June 29, 2011

what should the compression be.

Tiny Response from mllane
2 questions asked
Replied on June 29, 2011

Should be around 140-160 psi

Tiny Answered by rasmataz
68 questions asked

Replied on June 29, 2011

ok I have 148 psi

Tiny Response from mllane
2 questions asked
Replied on July 21, 2011

Did you find out anything about how the injector was operating? It sounds like it isn't properly atomizing the fuel.

Tiny Answered by rivermikerat (expert)
5,494 answers provided