Engine/Transmission (1994 - 1998) Loosing lots of oil near dipstick area while driving

[jtek]

On my bomed 95 it is losing oil out the drivers of the engine.

It seems it is coming out from the dipstick. .

It will loose a quart just driving 50 miles. but when Idle I cannot see a great loss from the dipstick tube. The fuel pump is just covered and driping with oil.

Even checking at a high RPM with the hood up I cannot see a area where could loose such a large amount.

I changed the coolant and it looks OK (no oil present) also it is not burning / smoking excessive unless a quick push of the throdle.



Help... ... ... ... .

 

[Vaughn MacKenzie]

My guess is the gasket between your fuel pump and engine is leaking. This will let a lot of oil get away. At idle it probably isn't slinging that much up there but at higher RPM the crank and/or camshaft is shooting more up there which leaks out.



Vaughn

 

[SRadke]

If the crankcase vent were to get plugged the blowby could force oil out of the dipstick tube. It's worth checking.



-Scott

 

[Jeff]

Where is the crankcase vent on a '95?

I assume take it off, flush some gas thru it and blow it out with forced air...

I think I should check mine too... thanks, Jeff

 

[jtek]

"If the crankcase vent were to get plugged the blowby could force oil out of the dipstick tube. It's worth checking.



I pulled it off and cleaned out. along with a oil change, coolant & hoses.



As a note this truck was in storage for about 2 years and neglected

 

[Mishkaya]

If I am not mistaken there should be an o-ring to seal the dipstick in the tube. Make sure it is not missing... .

Mishkaya

 

[Sjester]

I was not losing a quart per 50 miles but replacing the dipstick cured mine. Seal was gone on the stick cost about $26 from Cummins

 

[jtek]

I replaced it a few times in the past and it is due again for sure.

However with the excessive loss I cannot see it being the problem.

The truck has 218K miles on it and if it is the gasket on the pump leaking, how hard is it to replace.

A good afternoon to do.

 

[PUMPERDUDE]

Long story short... ... Also a 95



!)In the middle of road trip,truck blew out a huge amount of oil from dipstick tube... lost oil pressure Whole under carriage soaked. .

2)I tested blowby... Cummins tested blowby/Report it way over spec... Engine is worn/dusted... They say I need a rebuild. . I say bull$hit... Oil analysis has shown very little wear in the last 65k miles. Truck was arround 210 k miles... pretty close to where you are.

3)After a lot of head scatching and talking with ace mechanics(Rammin On for one)I decided to change the head gasket since it was leaking coolant near the T-stat anyway... What have I got to loose right.

4) Problem gone.

Hope you can figure yours out.....