1993 Ford Explorer plugs on one side fuel fouling

1993 FORD EXPLORER

96,000 MILES • 6 CYL • 2WD • AUTOMATIC

ALLENHUDSON91

MEMBER
8 POSTS

I have a 93 Ford Explorer 4.0 XLT all three of the plugs are fuel fouling on the passenger side of the engine, the other side is fine. I have been trying to figure this out for months. They foul within 10 minutes of driving. Can the Electronic Engine Control cause this? I have brand new plugs and wires, so I know its not those, the plugs were fouling before I changed them out.

Feb 10, 2010 at 7:06 AM

JACOBANDNICKOLAS

✓Experienced Mechanic
110,248 POSTS

Have you checked the coil? Also, have you checked fuel pump pressure to make sure the regulator is working properly?

Let me know.

Joe

Feb 11, 2010 at 2:53 AM

ALLENHUDSON91

MEMBER
8 POSTS

[quote:44ff0f9843="Jacobandnickolas"]Have you checked the coil? Also, have you checked fuel pump pressure to make sure the regulator is working properly?

Let me know.

Joe[/quote:44ff0f9843]

No, I havent checked the coil yet. I was told that since there was only one coil, if it messed up, it would affect both sides of the engine, not just one. I havent checked the fuel pump pressure, but I replaced the fuel regulator because my old one was leaking into the vacuum lines.

Feb 11, 2010 at 6:54 AM

JACOBANDNICKOLAS