Idle misfire
#1
Senior Member
Thread Starter
Idle misfire
1995 4.9 4wd 142k 5spd
New plugs, wires, fuel filter, air filter, oil change, timing is at 10 btdc iirc .
Previous owner says he replaced the distributor. Looks new to me. Newer cap and rotor also.
Truck has a nasty misfire at idle. No vacuum leaks either.
Is there something I'm missing?
New plugs, wires, fuel filter, air filter, oil change, timing is at 10 btdc iirc .
Previous owner says he replaced the distributor. Looks new to me. Newer cap and rotor also.
Truck has a nasty misfire at idle. No vacuum leaks either.
Is there something I'm missing?
#2
member
Have you checked for codes? If there is no codes and you say its all new? You can check
Fuel pressure, and run a can of sea foam in gas to clean the fuel injectors! A dirty injector
Will cause a skip too.
Fuel pressure, and run a can of sea foam in gas to clean the fuel injectors! A dirty injector
Will cause a skip too.
#4
Senior Member
Thread Starter
Haven't tried to run any codes as I only have a obd2 reader and I don't know how to pull the codes off these old trucks, I'm used to my old super duty lol
There is no cel either
There is no cel either
#5
member
You get obd1 code readers at any auto parts store under 30 bucks or there is a sticky on how to pull the codes for the 87 thr 96 trucks, go to pre 97 model truck section and it is will be listed there