Hey guys,
I am trying to help another Truck owner figure out a problem.
truck is an 87 GM with a TBI 350. it has been rebuilt and bored .30 over. Cam is next step up from stock, Comp cam, ECM friendly.
Problem is, he says its flooding on cold start, and after about 3 minutes, it starts to lean out, but is still a bit rich at warm idle. all sensors and ecm have been replaced 3 times to no joy.
Still banging my head on this....any ideas?
He hooked a vac gauge up, and while cold and flooding, the gauge bounces between 14 and 16 with a corresponding lope...gauge reads 17 at warm idle.