Effin 1990 Ford F250. 460 motor

[Honey Badger]

So this thing has always ran rich. RICH. It has also started and ran just fine…… besides the fact that runs RICH. Until Tuesday night. I started it to back out of the shed it is in. Ran awful. Like it was missing on half or more the cylinders. I figured it was cold. The pickup dies. Now it will cycle. Like it wants to start, but not start. If it starts it runs for a few seconds then bogs down and dies. Like it is flooding. The plugs are fouled. I need to replace those. Is there anything else I need to check while I am at it?

I hate this effin thing! I am also wanting to swap it to a carb to eliminate the EFI and running rich issue. Has anyone ever done that? Whats involved?

Thanks.

 

[swampratt]

Is this an automatic transmission that uses the computer to make it shift?
Think about that.
Otherwise a fuel pressure return style regulator and an intake and carb and possibly an aftermarker HEI distributor to make it light off.

I had a 1994 Dodge 3/4 ton truck that had a 360" in it and no matter what it would get 10MPG.

I hated that MPG and the plugs were clean and it ran excellent but 10 form Fuel injection is ridiculous and with automatic with overdrive!

If I had kept it a week longer I would have converted to a Quadrajet.

I assume you pulled the vacuum line off the fuel pressure regulator and looked for fuel in it.
Regulators can go bad and can leak fuel through the vacuum hose.

They can also go bad and increase fuel pressure..I think 30-45 psi was about what they ran

 

[Honey Badger]

This is a 5 speed manual.

 

[Honey Badger]

I did not check the vacuum line on the FP regulator.

 

[swampratt]

Yea check it.

 

[Honey Badger]

THE CULPRIT! ………….

FOULED PLUGS!

Problem solved!

 

[Okie4570]

99% of the time Ford issues are an easy fix. It's that 1% of the time that will make you want to leave Ford forever lol.

 

[Honey Badger]

Yeah…. But my rotten luck is that it is usually the 1%! Lol

 

[Oklahomabassin]

THE CULPRIT! ………….

FOULED PLUGS!

Problem solved!

Is it still running rich? If so its just a ticking clock until plugs are fouled again.

 

[Honey Badger]

The running rich is on the “to do” list. This thing has lived a life. The egr is gone. Purge valve is gone. Smog pump is gone.

Im gonna switch it over to a carb set up.