help!!!blowing white smoke

[DawgMode]

i got a friend whos car is blowing a lot of white smoke.....i first we thought he cracked his pistons or he had bad rings but the compression test came out perfect...so then we thought it was the turbo so we put a brand new one on and its still blowing white smoke.....

What do u think the problem is???

[spider_slayer]

you are burning coolant.burning oil = bluish smoke; black = fuel; white = coolant.

i would check all of your coolant connections nad i do mean ALL of then, not just your radiator hoses. also ask him if it was over heating any, if so then that would pretty much answer what you are burning

[DawgMode]

thanx for the advice ill check on it tonight

[xsublimefrekx]

check the head gasket.

[DawgMode]

well we checked for coolant leaks and there isnt any the the HG is fine so wat should we do now?

[spider_slayer]

how did you check the headgasket? i would suggest a compression test and doing a leakdown test. also does the car constantly blow white smoke or is it really sparatic? does it smoke at idle at while driving? you could also try bleeding the system and making sure there is no air in it.

[sdtouge]

sorry to thread jack but my car has been smoking some mainly at start up and then also sometimes rarely at idle, but never while driving.

i am thinking this might be caused froma a poor return lines maybe its clogged or soemthing kinked idk but what do you guys think?

[DawgMode]

theres nothing wrong with the HG and we already did a compression and a leak down test....when we first start it, it will blow white smoke but at idle its fine but then wen you rev it, it blows out a a shyt load of smoke

[spider_slayer]

sdtounge - there is an air bubble in your system. bleed your coolant system. use the bleeder screw on top of your manifold. my car was doing that for a while, smoking thick white smoke every now and then at idle.

Dawgmode - i'm honestly kinda stumped. you are describing the symtoms of a blown headgasket. are there any visable leaks anywhere? like after sitting for a night or 2 has any coolant leaked anywhere? i'm also going under the assumption that you have checked all of your clamps and made sure they are all tight. one thing that wouldn't hurt would to be pulling off the valve cover and seeing if the oil is ok...if any coolant is in the oil your oil will be a milky color. the only other thing i can think of would to be use the FSM method to bleed your coolant system and make sure there is no air in it. i don't think it will help any however but it can't hurt. i'm out of ideas, good luck

[DawgMode]

yea there is no leaks what so ever......i guess we will take off the valve cover tomorrow and check it out

[ericherm1]

Don't mean to jack the thread but I'm having the same problems. Mine smokes like crazy only when its warmed up at idle and when I come to slow stop. Its white smoke as well. I did everything that you suggested DawgMode to check but bleed the coolent lines. I'm wondering though why whould a bubble cause the motor to blow white smoke?

Oh, my head gasket is fine and the oil on the cams is clear golden color and no leaks around the block or head anywhere.

The one thing I did do that DawgMode didn't (I think) is remove the oil seperator canister.

Sorry about jackin the thread but same prob.... just wanted to get my word in.

[S14-NEO]

check the turbo!!!.....check for in and out play..if there is any there AT ALL your thrust bearing is shot...would make it smoke intemittantly and could also make it smoke really bad when hard in boost cause it puts added stress onto the trust bearing

[Silvia007]

My buddies did that a while ago, what happened was the previous owner plugged the T tube comming out of the valve cover. Supposedly it builds pressure inside the valve cover and when it was plugged, it forced oil into the combustion chamber. My 2 cents.

[spider_slayer]

yes. when plugging the t on the valve cover pressure will build up in the case and wear out your pistons kinda quick. but that would make for some thick blue smoke.

check do a compression test. if you get irratic numbers then it could be the head gasket, if all are low then rings and for god sakes....please check the turbo like mark said.

[biglipzit]

Ok i am surprised no one has thought of asking this... Check the turbo. The stock turbo is watercooled and i heard that sometimes the heat and water can cause hairline cracks in the bearing housing of the turbo that could leak water into the compressor or turbine side and also into the oil.. It is just a guess but couldnt water leak from the turbo into the exhaust turbine and cause white smoke? If there is no leak in the engine then i can only think coolant can get into the exhaust from there.

[spider_slayer]

for god sakes....please check the turbo like mark said.

check the turbo!!!.....check for in and out play..if there is any there AT ALL your thrust bearing is shot...would make it smoke intemittantly and could also make it smoke really bad when hard in boost cause it puts added stress onto the trust bearing

it was mentioned.......