Thread: hesitation under partial throttle

You said you checked the ignition system . Did you pull the plugs and wires and check the wires for "hot spots " or carbon track ,it will look like chalky white spots where the spark has come threw the insulation amd make sure no moisture is in thr plug holes (water or oil ) . Also what plugs ,timing ,and gap are you running . This sounds like a ignition cap or wire issue as it does it under load . Also double check fuel pressure .

this is actually my car was on a friends account when i posted,i checked all the plugs and wires the wires were fine but i replaced them to double check new cap new rotor button swapped coils and distributor is firing good spark on every cylinder,unless its only under a load the distributor seems like its working.im running ngk v-powers .44 gap and 17degrees,swapped fuel pumps and pressure regulators plus new fuel filter.

Did you ever find the root cause my vet started doing this two months back and it's getting worse and worse