Question about 1992 GMC Sonoma
If you can start the vehicle with carburetor cleaner, then yes you have a fuel delivery problem. To check fuel delivery, remove fuel line from fuel rail or carburetor and turn key to on. With the hose pointed into a gas can, you should see fuel pumping out of the line. If you have a camshaft driven fuel pump, then you will have to turn the starter motor to get the pump to work. If fuel is getting to this point, and the vehicle started earlier on carb cleaner, then you have clogged injectors. this may not be fuel related at all.
Check for spark by putting a plug onto one of your wires and ground the metal end of the plug . try to turn engine over. Should see a bright blue spark. Weak orange colored spark, or no spark at all indicates issues with distributor or coil. When doing spark check, be sure to have cleaned up any fuel that may have oversprayed from earlier testing.
An old trick to clear debris is to have one person cover the air intake while the engine is cranked by another person. Then quickly removing the hand that is covering the intake. 5 or 6 of those might clear out the trash.
If you have fuel, and you have spark, then timing may be a problem. get back with me and let me know what you find.
Posted on Nov 14, 2010
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Posted on Jan 02, 2017
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