1996 f150 302 lost power
09-10-2013, 10:26 AM
#1
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1996 f150 302 lost power
truck has lost power over entire rpm range and has a slight miss under load. On A hill that I use to take in 5th gear at 1500 rpm I now have to use 4th at 1750 rpm. The truck had 80 K on it when I got it and now has 90K
Ignition; plugs titanium look like new, wires 8mm silicon made in USA The distributor cap was aluminum and I replaced with bronze. All have 10K on them except new cap.
Fuel; Pump and filter have 10k on them. Fuel pressure at turn on is 33lb with no vacuum it is 43lb at 3000 rpm it is 32lb.
EGR valve; removed and tested and works as it should. Very little carbon build up
What should I look at next??? Any help would be appreciated.
Dan
Ignition; plugs titanium look like new, wires 8mm silicon made in USA The distributor cap was aluminum and I replaced with bronze. All have 10K on them except new cap.
Fuel; Pump and filter have 10k on them. Fuel pressure at turn on is 33lb with no vacuum it is 43lb at 3000 rpm it is 32lb.
EGR valve; removed and tested and works as it should. Very little carbon build up
What should I look at next??? Any help would be appreciated.
Dan
09-10-2013, 11:27 AM
#3
Martin
I'd bet its the plugs. I have same motor and run motocraft single plat, that is spec for the motor and theyll last a long time. I bet your plugs are finewire, the ignition in a 96 is not advanced enough for that type plug. A 96 Explorer 302 has coil packs ect and would maybe run those.
Im suprised those plugs didnt make it run bad from the get go.
Im suprised those plugs didnt make it run bad from the get go.