ssro

So i got a 1984 c4 and when shes cold shes runing just fine all power is there. But after 5 mins of driving, press on the gas and its bugging like crazy going from low to max non stop and its having a hard time acelerating, running at normal speed without pressing gas shes just fine. Checked the plugs they have the rigth color, new air filter new injectors, new fuel filters, new plugs new pump, new starter, new gas line

typical boomer

How do the vacuum lines look? The FSM will show you many many lines to check. Vacuum leaks are the bugaboo of early C4's

ssro

i have remove the egr valve blocked it with a plate, blocked the vacumr line that went in the carb

ssro

The other lines going to the canister look good, the only one i dont know about is the one going to the gas tank