1997 or 98 GMC Sonoma not cranking, just turning over.
Jan 20, 2011 at 6:39 PM
not cranking
1997 GMC SONOMA
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Have a helper crank it, while you visually check for spark at the plugs. If you have spark everywhere, use a gage and check fuel pressure. Some of the national brand autostores used to loan out a fuel pressure gage.
To check for spark at the plugs, you pull a spark plug wire loose, use known good spark plug or spark tester in the boot. Ground metal part of tester to metal part of engine, engine cranking, watch for spark. How long since a tune-up?
To check for spark at the plugs, you pull a spark plug wire loose, use known good spark plug or spark tester in the boot. Ground metal part of tester to metal part of engine, engine cranking, watch for spark. How long since a tune-up?
Jan 20, 2011 at 6:51 PM
summer was last tune up. already done the plugs. what do you think is next?
Jan 20, 2011 at 10:42 PM
Did you visually check for spark at the plugs. New plugs doesn't mean there is spark. Did you check fuel pressure, what is the fuel pressure spec?
Jan 21, 2011 at 4:37 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.