1989 GMC K3500 Sierra 7.4L No Power
This truck came in with a no strat, no spark. replaced the dist and would fire, but had a vacuum leak on intake manifold and fuel pressure was too low. replaced gaskets and pump and now it idles pretty smooth, but when driving under load truck has now power an...
FIX posted 9/30/2010
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Message Closed w/FIX
Vehicle Data1989 GMC K3500 Sierra
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Message Closed w/FIX
Vehicle Data
1989 GMC K3500 Sierra
VIN | 2GTHK39N9L |
Engine | 7.4 L / 8 cyl / GAS |
Trans | 3-speed Automatic |
Delivery | Fuel Injection / tbi |
Symptoms | No Power |
Occurs | Under Load |