Diesel in engine oil

[wideload]

My M35 engine sump has started to top up with fuel. Oil level is increasing on the stick and oil is looking very thin. At the end of the last 35 mile run out the oil pressure dropped to 15 psi at idle...it has never ever dropped this low before. Any ideas where it may be leaking from to get into the oil ?

 

[theeDIZ]

Is the fdc bypassed ?

 

[wideload]

Is the fdc bypassed ?

What is an FDC ?

 

[wsucougarx]

Fuel Density Compensator. It's part of your injection pump. This is one of the couple notorious sights prone to adding diesel to your crankcase

 

[wideload]

So the part of the pump which varies the rate of injection for the type of fuel you are using ? I am running fresh pump diesel all the time, if it is this device causing the problem how do I "disconnect it" ?

 

[wsucougarx]

http://www.steelsoldiers.com/showthread.php?10921-Replace-IP-or-bypass-FDC

 

[clinto]

http://www.steelsoldiers.com/showthread.php?127505-deuce-making-oil

There are multiple places the system can bleed fuel into the oil system. Go read this thread, it has a complete list of all the places the system can be compromised and some links to threads that show how to deal with it:

 

[mhassett]

FDC is the only place where you have fuel on one side or an o-ring and lube oil on the other.
By-pass FDC and problem will go away and truck will run better.

 

[gringeltaube]

FDC is the only place where you have fuel on one side or an o-ring and lube oil on the other.....

Not exactly.... read the thread linked in post #7.




G.

 

[wideload]

Thanks to you all, will start to investigate when i get back in to the UK later this week