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About Ray Niemi
Expertise
ASE Master Rated. Ask any questions about Volvo models up to 2000. Runnability, starting and charging system, diagnostic codes, brakes, front end, where to get certain parts. Should I buy this Volvo or not? I will try to answer your question and give you the knowlege to make the best decision in your case.

Experience
I started working on Volvo's in 1978 at the dealer and attended all the schools and achieved a Master rating. Since 1999 I have worked at independent shops and now own my own shop.

Organizations
Alldata on line repair manuals. IATN network of techs.
ASE rating of Master.

You are here: Experts > Shopping > Cars > Volvo > 1992 volvo 940GL rough start

Volvo - 1992 volvo 940GL rough start

Expert: Ray Niemi - 10/27/2009

Question
I have a 1992 Volvo 940GL that is rough to start and stumbles for about 20 seconds after starting and then it's fine. Had fuel injectors cleaned, replaced fuel and air filters. What's next?

Answer
Larry,
Perhaps one or more cylinders are not firing at first start due to plugs cap rotor wires. Could there be some vacuum leaks at the intake or some vac lines? Is the fuel pressure too low. Could the engine just be so worn out that the compression is low and gives a bit of hard start? Is the gas of very poor quality and not firing well? Too much carbon on the intake valves that the fuel is soaked up by the carbon, causing a lean mixture in that cylinder for a few moments.

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