Search results

  1. C

    88 GMC Truck Timing Advance Issues

    I have a 88 1500 GMC truck 5.7 TBI which has an spark advance problem. I installed a new 5.7 motor back in 2010 and it has been working like a charm until it started running rough about a week ago. I checked the obvious, cracked or broken vacuum lines, intake manifold and or TBI gasket leaking...
Top