2003 : Empty oil reservoir discovered

[lmorris]

Servicing oil cooler during a headgasket repair and found the reservoir for the oil cooler empty. No complaints from customer about hard starting. Truck has been sitting in my stall over the weekend. Suspecting the oring between the pump and block is gone bad. 200,000 km on engine. Anything else to look for?

 

Thanks.

[Bruce Amacker]

The check ball (plug) in the side of the HPOP could be leaking or missing. I heard of a cracked block through that oil passageway (between reservoir and HPOP)in an '03 but that's a long shot. I'd inspect the filter housing check valve, too, there's been a run on them lately.

 

I might put some solvent or diesel fuel in the reservoir overnight and see if it goes away.

 

Good Luck!

 

[lmorris]

The check ball is there and feels pretty tight.

 

Are you refering to the check valve which gets closed by the filter? If so, it tested good on the bench with some oil.

 

The orings are pretty flat, so we will change them and let it sit overnight and see what happens.

[lmorris]

Orings changed last night. Filled and marked the res. No drop this morning.

 

Thanks for the replies.