Sounds like a blown head gasket...white smoke aint good...

 

thats my initial diagnosis, hence why i asked about coolant in the oil. I fear this is what has happend.

CJ

 

I'm going to do a compression test tonight... and depending on the results of that... I'm going to try and change the head gasket... well me and a friend are... thanks a lot for the impuit guys, ill keep you guys posted... as long as its not a cylinder, valve or rod or anything ill be good. I hope

 

i actually had a customers car today on the dyno. After i got the car strapped down and ready to tune, and was letting the car warm up, the car started to smoke. I originally thought it was a bad turbo seal, so i went to smell the smoke and it was coolant. Turned out, there was coolant in the oil because the guy blew his head gasket before he got properly tuned. This was a brand new fully built engine.

Anyway, my bet is you blew your head gasket. That was my initial diagnosis after reading your posts.

As long as your pistons/rods/crank and all associated bearings are OK, you will be fine after you install a new head gasket. If you have to do the head gasket, might as well go ahead and install some ARP head studs as well. This will insure the head does not lift off the block in the future.

Good luck!

CJ

 

i just bought a head gasket at mitsu today for 100 bones... crazy

thanks for the imput itune

 

im going to try to swap out the fuel pump... a few people are saying that might be it...

also going to do a compression test today.

 

Fuel pump is not going to be the problem.

White smoke in the exhaust means you either have a very bad batch of gas (ie a bunch of water mixed in) or you have coolant leaking into the cylinders which would be a head gasket.

 

i just fell into the same problem but no white smoke. i can get it to start if the motors cold it just dies, but if i keep the gas pedal in until it warms up its fine. pcv valve, mass air are both fine also. im gonna check idle control valve next.

 

If it's smoking white smoke, it's definitely your headgasket. I have a headgasket leak right now and I'm currently in the process of pulling off the head. Listen, your coolant system is a sealed system which means there's a vaccuum created since the water pump contantly spins according to revs. If you don't have a perfect seal (headgasket leaking or blown), you won't have a vaccuum in your cooling system. This would cause the coolant to constantly flow into the overflow tank when it heats up but never get sucked back into the system because there is no vaccuum. What I'm trying to say is that check your Overflow tank to see if it is above the maximum line as far as coolant goes. That is another way to detect and be sure it is your headgasket or some other leak in your cooling system. While you're at the 71k mark, might as well replace your water pump and timing belt as well. Also, you can run a little more water to coolant mixture in your cooling system. Drive it for two days and then pull the plugs. If one or more of your plugs seemed like they have been steamed cleaned, then its definitely a headgasket leak. I don't think it's your fuel pump because either one of two things can happen. You can run ridiculously rich causing black smoke or you can run lean causing the car to overheat.

 

If you do not believe it's your headgasket, then it can be a vaccuum line which you claimed to have checked or your Base Idle Set Screw located on the throttle body which may have to be adjusted to idle properly.

 

Well i did the compression test. and i would think that would cancell out the head gasket. wouldnt it? i ran 148-150's across the board. it was something like 148, 149, 148 and 150 on the last cylinder... Also changed out the Coil packs... now where is this idle control valve and this base idle screw?

im doing the turbo tomorrow, but i dont see how the turbo would be affecting it

 

i changed the timing belt... at 50k... im going to do the turbo and fuel pump tomorrow to cancel out a few more things... my radiator is normal, filled with antifreeze/water... so im thouroly confused...

if it helps any, there is white smoke comming from somewhere around the turbo... and it smells as of that of a dirt bike when i try to start it up

 

bump

 

On DSMs it was pretty common for the stepper motor to fail in the throttle body. Very few owners made it to 100,000 miles without buying one of these. The stepper motor is what controls idle.

Now, on this list, I encounter a few people having this same problem.

 

stepper motor? where is this located... IN the throttle body?

also just put blow off valve, fuel pump and oil to things i have changed.