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1985 GMC S15 High Sierra 2.8L Poor Idle Quality, TIMMING ADVANCE
Posted to GM Driveability on 12/10/2008 6 Replies

Truck came in for oil leak from intake manifold gasket (back of engine) R&R intake manifold gaskets, cleaned egr ports, new o ring seal to distributor, reset timming to 8 deg. and this thing starts and runs with a bad shake at idle 780 to 800 rpm, on accelerat...

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Message Closed w/Summary

car Vehicle Data

1985 GMC S15 High Sierra

VIN 1GTCT14B2F
Engine2.8 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryCARB / 2 BBL
EmissionsOBDI
SymptomsPoor Idle Quality, Timming Advance
OccursHot, Under Load, on Accel, Idle
Message Closed w/Summary

car Vehicle Data

1985 GMC S15 High Sierra

VIN 1GTCT14B2F
Engine2.8 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryCARB / 2 BBL
EmissionsOBDI
SymptomsPoor Idle Quality, Timming Advance
OccursHot, Under Load, on Accel, Idle