DIESELING UNDER LAD

1999 Chevrolet

Tiny

hondaguy

August, 30, 2011 AT 3:29 AM

Changed plugs, wires, cap, rotor. Fuel pressure is 55pds. The engine still does this dieseling under load.

FOUND 1367 RELATED QUESTIONS

3 Answers

Tiny

dave's big backyard!

August, 30, 2011 AT 7:13 PM

Try up grading your fuel it might help. One more thing hook a scaner to it and make sure it dont have any egr codes

Tiny

JDL

August, 30, 2011 AT 7:57 PM

What is model of vehicle, litre size of engine? If you have preignition, can be caused by a hot spot. I thought dieseling was with the key off? Check compression.

Tiny

dave's big backyard!

August, 30, 2011 AT 8:41 PM

Most newer cars have spark knock under control, unless it has a vac leak or a fuel, or egr flow issue.

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