1993 GMC Sonoma Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 GMC Sonoma
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1993 GMC Sonoma ProblemsEngine Running Rich Due to Fuel Leak Inside Intake Manifold
Vehicles using the enhanced vortec V6 engine may be hard to start run poorly and/or use to much fuel due to a fuel leak inside the intake manifold plenum. Commonly this is caused by a leaking fuel pressure regulator or fuel line. The fuel system will need to be pressurized with the upper intake manifold removed in order to determine the exact cause of the leak. Removing the "tuning valve" from the upper intake can allow for limited visual inspection without removing the upper intake manifold.
An engine oil leak may develop from the distributor shaft o-ring seal.
The distributor may develop internal faults. This can cause a rough running engine or stalling condition and the Check Engine Light may or may not illuminate. The distributor should be overhauled or replaced to correct this concern.
1993 GMC Sonoma QuestionsWhy does my AC only blow on my feet after having the truck in the shop? (1 answer)
While in the shop they replaced my distributor, dist cap, rotor button, coil, plugwires, starter and intake manifold gasket.
I have replaced the throttle body and need to verify engine speed
it doesnt happen a lot i forgot to check the fluid