1977 EXPLORER
Tennesee Chapter Member
Well as of lately my truck (302/AOD) has developed a pretty heavy detonation under a load (OD acelleration under 60 and low speed passing and WOT) Ive tried several differant stations and grades of fuel (87-93) and with ethanol and without problem remains the same,Tried disconnecting the air pump,EGR etc with no differance.
I done a Fresh FULL tune up around 4k miles ago (90k miles) using motorcraft plugs and autolite wires,brass terminal cap,new rotor,cleaned T/B,PCV valve,new fuel filter,airfilter,crankcase filter etc..timing is set to 10* BTDC with the spout out.
Looked and listened for vac leaks This thing idles like glass and otherwise has no issues.
Its gotten so bad it now rattles and shutters badly when you are passing on the interstate and I know this will hurt it. So im having to drive this truck everyday now and need to remedy this issue quickly.
I done a Fresh FULL tune up around 4k miles ago (90k miles) using motorcraft plugs and autolite wires,brass terminal cap,new rotor,cleaned T/B,PCV valve,new fuel filter,airfilter,crankcase filter etc..timing is set to 10* BTDC with the spout out.
Looked and listened for vac leaks This thing idles like glass and otherwise has no issues.
Its gotten so bad it now rattles and shutters badly when you are passing on the interstate and I know this will hurt it. So im having to drive this truck everyday now and need to remedy this issue quickly.