Fouling sparkplugs

[AlienBronco]

Hi All,
I've been off the forum for a while and am trying to figure this one out.

I was out wheelin and put my rig into a tank trap (BII trap). The water was about 8" over the floor of the interior. Pulled it out, drove it home, cleaned it up and now it runs like crap. If I clean or replace the spark plugs it starts right up but surges at idle, smokes like a diesel (black carbon smoke) and lacks power on the road. If I run it for 30 minuets the plugs get so fouled it will not start again until I clean them. The engine throws no codes. This is not my daily driver so it has been sitting for a while and I am ready to get it going again.

This is what I have done so far:

Changed the oil twice and tranny fluid once

The exhaust was plugged with mud so I replaced the muffler, cleaned out the pipe and installed a new 02 sensor, there is no CAT on this rig.

We cleaned the entire intake, KN air filter, idle bypass, etc...

Checked compression and all cylinders are within 5psi

Checked all of the basic tune up items: plugs, wires, distributer, etc...

Checked all of the connectors under the hood for dirt and grime.

I discounted the idea of a fuel issue because it runs rich not lean so it can't be a filter issue.

The oil pressure is low at operating temp and the lifters tick so I know I hurt my cam bearings again.

I'm perplexed anyone have any good ideas?

 

[AlienBronco]

When I got the rig it had the "2.9 tick" and about 5psi oil pressure. We did a complete rebuild about 60k miles ago.

 

[holyford86]

the computer is only about 2 inches off the floor so chances are you fried it when you submerged it.

 

[AlienBronco]

Answer to WB...I don't know the brand of bearing used. I had the work done by a very reputable machine shop here in town. The engine stalled after working it hard trying to extricate myself from the hole and it began the tick as soon as I got it running again.

holyford i did not think of that I'll have to check it out.

 

[tx_smorgan]

i would say computer the same
exact thing happened to me

 

[Bob Ayers]

Pull the vacuum line off the fuel pressure regulator on the fuel rail. If you have raw gas, then you need to replace the fuel pressure regulator.

 

[MAKG]

I agree that the computer is suspect.

Run the self tests, and follow up with pinpoint tests. Don't just assume the computer is bad unless you like to use $100 bills as kindling.

 

[AlienBronco]

I'll be getting into it tomorrow AM. I'll let you all know what I find.

 

[AlienBronco]

Now for the stupid question...where is the main engine control computer located?

 

[Psychopete]

Now for the stupid question...where is the main engine control computer located?

Under the passenger kick panel inside of the cab. Silver box with a lot of wires coming out of it, can't miss it.

Pete