Help me locate this leak

[HS108]

When replacing my turbo, I noticed a lot of oil all over the place.

I took some pics from the bottom looking up where the downpipe would be.

I notice a lot of oil on the motor on the passenger side of the motor, and a lot of gunk in the Valley pan as well, also pretty junked up in the pocket where the GP under the turbo is located.

I was leaning towards the valve covers gaskets but, I notice wet oil in the back of the engine near the up pipe

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Any ideas

 

[79jasper]

There is a oil gallery back there. Shouldn't randomly leak like that though.

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[HS108]

Ya. Idk, I think it's the valve cover, but my buddy says no. I'm not 100% tho

I've read somewhere the heads can't leak oil? Is that true? If so I don't know what else it could be other than the valve cover?

Unless the oil feed line was shooting up but I doubt That
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[franklin2]

Oil leaks are hard to find sometimes, even for experienced mechanics. The valve covers are obvious culprits and even if they are not the root cause of the largest leak, if they haven't ever been changed you can be guaranteed they are contributing some to the leaking. I would change them and see what happens afterward.

Another place to look for leaks at the rear is the oil pressure sending unit or switch, whichever you have. It's way behind the intake on the top of the block near the firewall.

 

[Shawn MacAnanny]

Maybe your Valley pan /intake gasket is leaking spraying cdr oil back there.

 

[homelessduck]

Isn't there a drain at the back of the valley pan that dumps to the passenger side ? Could be leaking into the pan and running down.. Whenever I have mystery leaks I add some dye.

 

[HS108]

Noticed my valve cover bolts were finger tight, I tighten them up, and I will see what happens, I'm already so far behind on my project, it's not a gusher so major worries.

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[icanfixall]

We do have a drain at the back of the valley pan and it does drain down the passenger side of the block usually ending up covering the starter.

 

[HS108]

That's what mine seems like, where is This drain at

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[riotwarrior]

Oil leaks on a dirty engine are nigh impossible to determine

Steam that bad boy off really well...then when leaks show up you knkw exactly where they start...

Oil leak..add dirt....grows like moss covering the real culprit...more oil bigger patch of dirt...n so on just grows n grows...

JM7.3CW Eh!

 

[Danielle]

Oil leaks on a dirty engine are nigh impossible to determine

Steam that bad boy off really well...then when leaks show up you knkw exactly where they start...

Oil leak..add dirt....grows like moss covering the real culprit...more oil bigger patch of dirt...n so on just grows n grows...

JM7.3CW Eh!

I agree. With my customers I usually explain all of this and recommend we start from the top and work our way down, cleaning as best we can as you go.

That way you can split up the costs and locate smaller leaks as you repair bigger gaskets

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[franklin2]

Actually slower leaks you don't need to worry too much about are the ones the dirt grows on. It's the clean wet areas that are leaking really bad. The detergents and high flow rate clean the area off and the dirt doesn't have a chance to stick.

 

[jwalterus]

It's the clean wet areas that are leaking really bad. The detergents and high flow rate clean the area off and the dirt doesn't have a chance to stick.

if you have a leak that bad, you're not going to have to search real hard to find it.....

 

[icanfixall]

That's what mine seems like, where is This drain at

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Go to the head gasket and ARP studs posting and look at pic 8 of 9. See the copper colored seal in the rear of the valley pan. That is where the drin is. This owner has removed the plug that has a 3/8 drive hex in it.