Yeah just changed the oil 500 miles ago. I will add it to the tank and see if that does not clear this up. Thank you for all the helps guys. I really appreciate it.

 

Combustion chambers too, dude! Do you know the drill (how to)? I'll post a link if you haven't done it before.

 

I have not done it to this truck before no. Throw up the link bro I can always use more information. Never can be too prepared man.

 

Skip adding to oil this time. So 1/3 through the brake power booster Vac hose & 2/3 in tank.

 

So I would skip the first part as the EFI does not have that kind of setup right? Would it help to remove the breather hoses and dribble some into the into the throttle body?

 

Let go w/ this link. You have a power breke booster vac hose to introduce the seafoam through while engine is at a warm idle. Then shut off engine for 15-20 minutes: https://www.f150forum.com/f33/how-se...-1991-a-31505/



When you restart, rev the engine to about 3500 RPM redundantly. Back to idle, then rev again. When smoke clears, take it for a hard drive.

 

Okay will that get to the throttle body also? Stupid question probably but would the coil having weak spark trip a code? I just replaced it but it does not mean it is not a pile of junk already.

 

Not really.

 

You'll need to go w/ the Seafoam "Spray" to concentrate on that.

 

Now it becomes clearer. I am wondering if this maybe the whole problem. When I step on the gas the motor will bog down then take off. I am going to give it the full treatment then see where I stand.

What is the best way to test that coil? Besides knocking myself on my *** by grabbing the end of a plug wire lmao!