Question about Cars & Trucks
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: 1990 Gmc topkick with 366
Hi! Please do check the fuel pump. The fuel pump may have a low pressure which can cause the vehicle to run rough due to failing fuel pump. You may need to replace the fuel pump to resolve the problem. HOpe this helps and thank you for using FixYa!
Posted on Oct 24, 2010
Yes that's very possible also make sure you put stock spark plugs in it and not cheap autolites cause I've had nothing but problems out of them. By stock I mean ac seldom for gm champion for dodge motorcraft for ford and bck for foreign vehicles
Posted on Oct 10, 2011
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