Question about 1990 GMC Sierra
Blew off engine.wiped off distributor put new spark plugs in. changed gas filter & air filter. The check engine light usually goes off. The engine runs a little rough when you first start it up then it smooths out when it warms up & it seems to run fine
Let up hood let it idle to dry watch the check engine light . it should be okay.let it idle it will smooth out.
Posted on Apr 12, 2009
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Posted on Jan 02, 2017
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