Welder7018

My 1997 F-150 has a hesitation and stumble under light/medium acceleration. I just changed plugs and propper gapped to .054. What else can it be clogged injectors? Or fuel filter? Or maybe but hoping not the PCM since it controls the igniton/fuel system. Its getting annoying finding the problem. Any help is appreciated! Im hoping I just need a fuel system clean and service. Anything else it could be?

BrittonN

Any codes?

Welder7018

None. And its the 4.6L

Zrock

Vacuum leak, Fuel filter needs changing, Air filter, Throttle body needs a good cleaning, those are just a few basic things to start with. Do you have a code reader or are you just looking for the dash light? If you have a code reader do you have any pending codes?

Welder7018

I dont have a reader. Im getting a new air filter and fuel filter friday I was also gunna get sea foam and mass air and throttle body cleaner. Give it a good scrubbing. Then clean connections on all plugs under the hood I can get too. Ad dielectric grease.

wilson84

Check ur coils go it in the dark.with a flash.light start truck pull wires off one.by one c if it.arcs watch the fan it sounds like the same problem I.had stumbled but no.code it was my coil

Welder7018

Thanks. Ill try that.