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Leaking gaskets need diagnosed (with pics)

2FASTGTP

2FASTGTP

New member
Hey guys, I was just checking up on my engine bay with a LED flashlight in order to locate any leak spots. I found a couple and one that I would like someone to tell me what gasket it is thats leaking. The first picture I believe to be the valve covers.

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This next picture I need help diagnosing. Thanks!

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First is the valve cover, correct.

The second just looks like a very very minor seep from the trans case gasket. I bet if you cleaned that one, it wouldnt look like that for another year or even a few years. It just looks worse because the dirt has stuck to it and built up.
 
First I could see being valve cover or lower intake gaskets. The second, we can see seepage coming in from out of the view. This could be the LIM gasket, could be the turn around on the end of the LIM, and it could be a trans casing seepage.

Trans seepage is not very likely in this area, although a little fluid may have flung up and found the breather hole of the trans. I'm doubtful that it's trans. And if you are paranoid and go check your trans fluid..I bet it's not 100% filled..but that's normal.
 
I agree follow that seepage off to the left from second pic. Take your air cleaner off then look under the lower intake manifold. That's where mine was leaking oil.
 
Ok thanks guys. Im gonna go ahead and replace my LIM gasket, SC gasket, and valve covers. I watched a video on YouTube about the LIM replacement but Im still not too confident. Is it a tough job for a rookie? I feel like if I can just get the SC then it would be easy from there.
 
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Doing this job is turning bolts counter clockwise to loosen, cleaning parts and tightening bolts by turning them clockwise. If you look at one bolt at a time instead of the big picture, it'll look and be easy.

If you let yourself get overwhelmed by the large picture, pop back on the forum. There's nothing we can't help with.
 


BillBoost37 said:
Doing this job is turning bolts counter clockwise to loosen, cleaning parts and tightening bolts by turning them clockwise. If you look at one bolt at a time instead of the big picture, it'll look and be easy.

If you let yourself get overwhelmed by the large picture, pop back on the forum. There's nothing we can't help with.
Click to expand...
Awesome! sounds great, thanks!

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From reading some write ups and watching videos, some people remove a couple of pullies but I don't see how that is necessary. Is that a must?

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The only pulley you would have to remove is one on the SC tensioner to be able to remove the black bracket that overhangs the valve cover.
 


I thought I needed to move the fuel rail though. Its not just the valve covers im doing but also the LIM. And yeah I will degrease it and probably gonna clean everything up real nice while I have it off the car.

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no, clean it first, then do the lim job. every plug you see will need to come off to do the lim, off the TB and lim, and injectors, the map and evap, the boost by pass solenoid. the alt, take it off too. and the vac lines.
 
Ok so then the plug in the picture will need to be removed correct? That was the only one I was unsure of

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yes unplug the injectors, un bolt the 4 corners of the rail and then pull up on the rail, the injectors will pull from the heads.

you can flip the rail to the side, or take the lines off the rail with a quick disconnect tool.
 


Whoa.. lemme lay this out a bit more straight forward. The vid has a lot extra in it.

You want to
Disconnect negative battery cable (move it away from battery where it connects so it can't reconnect itself gently)
Remove alt
Disconnect three sensors on throttle body
Disconnect electrical on front of super charger by throttle body (that's called the boost soleniod)
Disconnect the EGR electrical by the back side of the TB
Disconnect the 6 fuel injectors by pushing that wire toward the injector and pulling up... that releases it's clip w/o removing the wire clip itself
Disconnect the 1 connector on the MAP sensor (behind supercharger by bracket from alt to SC)
Drain coolant
Lift fuel rail out of way (4 10mm nuts at corners of rail, plus 1 13mm bolt on top of sc) If you don't have a fuel line tool..gently lay the rail out of the way.
Remove supercharger (yes the EGR shield also needs to come off to get the SC unbolted)
Good time to unbolt and clean the throttle body
Remove 3 bolts holding the alt bracket to the engine (this is the bracket it sits on) You may need to wiggle/gently coax to get the coolant elbows to release)
Remove LIM (12 3/8" bolts, I mention that because when you go to torque them..10mm socket will spin)
Clean and let's reassemble

LIM bolts get a little loctite or liquid teflon with ptfe to seal them, torque to 15ft lbs on metal LIM gaskets, 13 ft lbs on plastic gaskets
SC bolts are 17ft lbs.
Everything else is...reasonable. Don't try to kill all the bolts. Some are smaller and can't take it.
 
Bill, thanks alot for that helpful write up. I went through and understood a majority of it while looking at my car and the only things I was not able to locate were the EGR and the MAP. Is this the MAP?

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Ooops..forgot to tell you to take the evap off. That's evap. Map is down below that and a smidge more to the driverside. It's also bolted to the SC. EGR is that big thing with connector on top right behind the TB towards the firewall.
 
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