Help: anyone else had this problem before?

[DIESELMAFIAPER.LB7]

k so i had some oil leaks i fixed an the truck could idle for days rev it up idle it up no oil soon as i drive 2 blocks oil is leaking bad park it leave it running oil stops coming out????

now for the killer its coming outta that front drip dole between the adapter plat and bellhousing of the trans? if its the rear main why would it leak only when driving are the thrust bearings letting it move i just dont see how it doesnt leak just idleing?

 

[bullfrogjohnson]

Probably has to do with the constant raised oil pressure while driving. Only problem areas back there are the turbo oil drain, rear main, and where the adapter plate where it meets the upper oil pan. What kind of sealant did you use?

 

[DIESELMAFIAPER.LB7]

Right stuff I have no leaks now other then what's coming outta the drip hole an what would pressure really make that much difference on the rear main I also get the pressure up an idle when revving it an powerbraking it?

 

[bullfrogjohnson]

Most rear mains will leak all the time. I doubt that's your issue. You could have residual oil from when you had turbo drain issues. Have you made sure there is no oil in the valley. It could be the forward movement of the truck causing the oil to drain back.

 

[DIESELMAFIAPER.LB7]

Yep checked all that I washed it all off valley is dry around return line is dry I can wash through the inspection plate till clean water cones out let it idle no oil drive it oil starts leaking out from the drip hole?

 

[DIESELMAFIAPER.LB7]

I'm out of ideas I guess ill have to pull my trans an see

 

[408.Luke]

it could be the momentum from ur truck when you move forward it sloshes back making it high enough to leak out where the hole in the rear main seal is? try going in reverse lol that or extra turbulence from the crank at higher rpms

 

[ripmf666]

When you installed the rear main seal did you use any sealer or loctite around the metal ring to the crank shaft. That's were most of the leaks come from back there.

 

[DIESELMAFIAPER.LB7]

Well it should leak constantly though is what I don't get

 

[DIESELMAFIAPER.LB7]

Tried to use selant but Its a freaking tight fit

 

[ripmf666]

Just before installing the rear main seal we take a finger and wipe the loctite around the metal ring and a hair on the crank shaft just were it seats. The LB7 did not leak at idle only after he drove it we bad to fix the oil pump from the gear spinning on the shaft so we replaced the rear seal and added sealer that fixed it.

 

[DIESELMAFIAPER.LB7]

hm great well wish i had money to redue my trans(being as i have to pull it) guy that did it im sure wont warranty it and hes at the dpc right now anyways we'll see when he gets back i guess

 

[DIESELMAFIAPER.LB7]

whats the flat rate on r&r of the rear main seal?

 

[bullfrogjohnson]

id say around 6-8 hours at a dealership.

 

[DIESELMAFIAPER.LB7]

damn more money then i want to spend was going to let someone else fix it while i went outta town next week