Did you look at the bypass valve yet ?

 

No we havent done that yet, what exactly am i lookin for? Will it be obvious when I see it?

 

Unscrew the oil filter & watch carefully for anything to drop out of the rear header ,(spring ,washer & backer )

The Small hole upper left

These are the parts ....

 

thanx alot. It will have to wait till tomorrow though, grounds wet from the rain and some good old high school football tonight.

 

Had a similar problem with my '97 F-350 7.3L I noticed that my waste gate was always in the open position so i disconnected the solenoid from the gate and put a spring on the gate up to the lifting lug for the motor. It fixed my problem and now the 'ol girl has tons of power.

 

You don't have a wastegate.

 

Yes I do. So ford calls it a back pressure valve... fixed the problem either way

 

Ford calls it that because that's what it is. It doesn't divert the exhaust past the turbo, which is what a wastegate does.

 

Following this thread

Action - can you elaborate on the oil bypass valve a bit? What would be the symptoms of a problem with this valve, and what's the fix? I have a power-loss proble tha I think I've pinpointed as a trans problem, but I'm always on the lookout for other causes.

I assume a problem with the low pressure oil system would lead to starving the HPOP of oil but I'd guess the truck would just stall/not start in this case - and the HPOP reservior would be found empty.

Is there something more to a bad bypass valve than this?