my 78 wont idle at all and i have yet to diagnose this problem. it will run smooth after about 1.5- 2 grand, but when it drops below that it sputters really hard/ baackfires, then eventually dies within a matter of seconds what i have done thus far *new plugs *new plug wires *new cap and rotor *new air filter *new fuel filter * messed with idle screw, no results was told it could possibly be the timing, but im not sure how reliable the source of information was any ideas, suggestions, diagnoses would help Thanks guys
Without knowing how it runs when trying to idle I,m just guessing, is it flooding out?, hard to restart?, choke plate closed or partially closed, AAP diaphram in the carb ruptured and leaking gas causing flooding, distibutor advance mechanism inside distributor dirty or corroded and stuck in advanced position, vacuum leak(s) somewhere? just a few ideas to think about.
almost sounds like a vac leak check all the hoses for cracks or splits could also be bad carb gaskets or intake manifold gaskets try spraying some carb cleaner around the base of the carb and around the manifold if the rpms pick up when the truck is running then it is a vac leak
that is what i was told too... check for anyyy vaccum leak and i was also told that the idle speed cut off solenoid may have a bad wire( at least i think thats what it was called) im still looking over all my vaccum lines and intake seals and ish so ill let you know if i find something on my truck
thanks guys. i have been thinking a vac leak too. dailydriven; its a 20r im looking into buying a cheap daily driver so i can make my truck my full time project. so some time in the future she is getting swapped out of there, so im not too concerned
