High EGTs and no boost.

[kidwiththelaser]

My car has been acting really weird lately. I just walked a mile back home, from where my DSM broke down.

I was driving and I noticed that when I tried to boost it would just get slower, and the boost guage wouldnt go past 0 psi. The one time I did get it to boost, it maxed out my 20 psi gauge, but didnt accelerate at all. Also when ever I try to accelerate at all, it barely moves. If I go WOT the RPMS wont climb, and it wont accelerate, all it does it overheat.

The EGTs are incredibly high, I was cruising around in 2nd gear at 3000 rpm, at 0 psi, and the EGTs were up to about 1550*!!

Its also burning alot of oil, I can smell it but I cant figure out where its coming from, and I can see grey smoke come out of th exhaust sometimes.

Whenever I try to start the car when its warm, all it does is just crank, it wont even sputter at all. And then the battery dies after about a minute of on and off cranking. It starts fine when its cold though.


Im guessing that there is more than one thing wrong with the car, I checked for boost leaks a few days ago, and fixed a few of them, but I did it at a gas station so I couldnt find them all.


ANy ideas???

thanks soooo much

-Charlie

 

[kidwiththelaser]

Also I should mention that it is not throwing any CELs.

 

[kidwiththelaser]

One more thing it was only making about 5 vacuum at idle.

 

[dsm1kenobe]

My car has been acting really weird lately. I just walked a mile back home, from where my DSM broke down.

I was driving and I noticed that when I tried to boost it would just get slower, and the boost guage wouldnt go past 0 psi. The one time I did get it to boost, it maxed out my 20 psi gauge, but didnt accelerate at all. Also when ever I try to accelerate at all, it barely moves. If I go WOT the RPMS wont climb, and it wont accelerate, all it does it overheat

The EGTs are incredibly high, I was cruising around in 2nd gear at 3000 rpm, at 0 psi, and the EGTs were up to about 1550*!!

High EGT is a good indication that you're ignition timing is being retarded. Excessive timing retard comes from knock. Knock, if real knock as opposed to phantom knock, comes from either not enough fuel or excessive base timing and/or timing advance (from biggie injectors). Do you have a logger and/or wideband to verify your fuel? What about your cam timing? When your pistons are @ tdc, are your cam gears in agreement?

Its also burning alot of oil, I can smell it but I cant figure out where its coming from, and I can see grey smoke come out of th exhaust sometimes.

Oil getting in your combustion chambers is why you're burning oil. There are a number of ways this can happen: through your rings, head, or from the turbo. Do a dry then wet compression test and compare. If your numbers are close, then you're most likely not burning oil through your rings, and you're getting oil from the head or head gasket. Do a leak down test. Check turbo shaft play - excessive play is no good.

Im guessing that there is more than one thing wrong with the car, I checked for boost leaks a few days ago, and fixed a few of them, but I did it at a gas station so I couldnt find them all.

ANy ideas???

thanks soooo much

-Charlie

The search feature is your friend. Search "Boost Leak" and you'll learn how to do it the right way.

Try to ask more specific questions and I'm sure that you'll get more help from people on this board. Good luck and keep us posted.

 

[kidwiththelaser]

High EGT is a good indication that you're ignition timing is being retarded. Excessive timing retard comes from knock. Knock, if real knock as opposed to phantom knock, comes from either not enough fuel or excessive base timing and/or timing advance (from biggie injectors). Do you have a logger and/or wideband to verify your fuel? What about your cam timing? When your pistons are @ tdc, are your cam gears in agreement?



Oil getting in your combustion chambers is why you're burning oil. There are a number of ways this can happen: through your rings, head, or from the turbo. Do a dry then wet compression test and compare. If your numbers are close, then you're most likely not burning oil through your rings, and you're getting oil from the head or head gasket. Do a leak down test. Check turbo shaft play - excessive play is no good.



The search feature is your friend. Search "Boost Leak" and you'll learn how to do it the right way.

Try to ask more specific questions and I'm sure that you'll get more help from people on this board. Good luck and keep us posted.

No logger or wideband at the moment, Im saving up for DSMLink, but I still need to get to work. Right now, I have a 2g MAF and 550cc injectors, and compleltly untuned. I know its kind of ghetto, but I hear it has worked before. Im pretty sure that the cam timing is right on, because I pulled this motor out of my old car which was running perfectly, and it had the t-belt done about 3000 miles ago, by a professional. The turbo has a bit of shaft play, but not very much. Last time I drained the oil, I didnt notice any coolant, so I think that the headgasket is ok. Maybe the turbo??



When i did the boost leak test, I made one of those testers on the VFAQ site, and then put it on the turbo. Then I used the aircompressor at the gas station to push air through the system. Next i sprayed everything with a mixture of soap and water, and looked for bubbles coming out. I found that air was leaking from the turbo/j-pipe gasket, and from where the IC pipe connects to the TB elbow. So I replaced the gasket, and tightened down the clamp the holds the IC pipe to the elbow, and I havent had a chance to do another test. I will tomorrow though, and we'll see what I find.

 

[kidwiththelaser]

A few more symptoms:

-Cant rev past 2500 rpm even at WOT

-LOUD knocking sound coming from the head, its not consistent with rpm or anything.

 

[Newlogics]

A few more symptoms:

-Cant rev past 2500 rpm even at WOT

-LOUD knocking sound coming from the head, its not consistent with rpm or anything.

Bent valves, thrown rocker arms/collapsed lifters or cracked pistons. Been there. It's not fun.

 

[kidwiththelaser]

Bent valves, thrown rocker arms/collapsed lifters or cracked pistons. Been there. It's not fun.

oh no!

Would most of that be pretty obvious if I pulled the Valve cover off??

 

[Joe's_GSX]

I am gonna go with the turbo on this one. This is what my 1G did when it had a bad turbo. Bad knocking on attempted boost with lots of smoke; I thought I was running rich but really the turbo had little shaft play but was in need of a rebuild because the seals were shot which stopped it from making any useable boost.

 

[kidwiththelaser]

I am gonna go with the turbo on this one. This is what my 1G did when it had a bad turbo. Bad knocking on attempted boost with lots of smoke; I thought I was running rich but really the turbo had little shaft play but was in need of a rebuild because the seals were shot which stopped it from making any useable boost.

What about the part where I can barely rev the engine??

 

[kidwiththelaser]

So do you guys think it sounds like bent valves and the turbo needs rebuilding??
I havent tested the compression yet, because my car doesnt want to crank over anymore. .

 

[Joe's_GSX]

If the car no longer starts then your problem is much more serious than what i had previously thought. It sounds like your timing may have skipped a few teeth and then it caused some valves to get bent and when all this was happening you were thinking the only problem was a lack of boost. It sounds like much more than that.

 

[kidwiththelaser]

http://img.photobucket.com/albums/v234/4thgenlude/tbelttiming2.jpg

http://img.photobucket.com/albums/v234/4thgenlude/Tbelttiming.jpg

Heres some pics I just snapped of the cam timing. Im not sure if you can tell, but the notch on the crank pulley is right on the "T" on the mark.

 

[kidwiththelaser]

http://img.photobucket.com/albums/v234/4thgenlude/1cylignitiontiming.jpg

I just hooked up a timing light, and theres where the timing mark on the crank pulley was.

Edit: i adjusted the CAS and the timing is now dead on.

 

[kidwiththelaser]

Well, I fixed the timing, and it seemed to help quite a bit. So I drove it around the block, and it actually rev'd all the way up to redline, still no boost though.

And then this hapened.

http://img.photobucket.com/albums/v234/4thgenlude/P1010245.jpg

Amazingly, I was still able to drive it home.

 

[kidwiththelaser]

#1 cylinder combustion camber

http://img.photobucket.com/albums/v234/4thgenlude/1cylCC2.jpg

#1 cylinder piston (Doesnt move up and down, when turning the motor over)

http://img.photobucket.com/albums/v234/4thgenlude/1cylPiston.jpg

#2 Cylinder combustion camber

http://img.photobucket.com/albums/v234/4thgenlude/2cylCC.jpg

#2 Cylinder piston

http://img.photobucket.com/albums/v234/4thgenlude/2cylpiston.jpg

#3 Cylinder combustion camber

http://img.photobucket.com/albums/v234/4thgenlude/3cylCC.jpg

#3 cylinder piston

http://img.photobucket.com/albums/v234/4thgenlude/3cylpiston.jpg

#4 Cylinder combustion camber

http://img.photobucket.com/albums/v234/4thgenlude/4cylCC2.jpg

#4 cylinder piston

http://img.photobucket.com/albums/v234/4thgenlude/4cylpiston2.jpg


I still havent figured out where all the oil went, a few weeks ago.


Also, look closely at the #1 cylinder combustion camber, on the exhaust side, you can see where the piston slapped the head, do you think that this head is still good?

 

[sho_tyme_psi]

Have you checked the turbo to see if its trashed??? I would guess no boost and oil smell would come from here. Not to sound like an A$$, But I would recomend you taking it to a mechainic that would have a little better clue as to whats going on. At this point I know you will need a motor, and posably a head and turbo. Best of luck.

 

[kottyking]

Timing.