White exhaust is still my problem

I have a 2000 Tacoma 2wd v6 that is still causing me some white exhaust smoke on start-ups and I'm trying to figure it out. I'm burning coolant somewhere. I've tried a compression test that checked out fine with readings average of 190psi and replaced the after market PCV valve in it with a factory original. The air filter had some oil soak to it that may have been caused by a bad after market PCV Valve (which I replaced) so the air filter was replaced also. Those remedies lasted about a day and now the smoke is back again but to some degree it is less. Again, the white smoke issue only happens and last during start up and drive off but clears itself. Help on this issue would be greatly appreciated..

 

head gasket is going out is typically the culprit...I wouldnt say cracked head just because you did a compression check. From my experience its usually between two cylinders....thats why when it heats up it expands the metal and it stops. Is your coolant level going down?

 

Been keeping an eye on the coolant and there was some minor loss, maybe a cup or so. I should try the typical quick fix of head gasket repair fluid before deciding to machine the head. This is a used truck that I'm thinking to purchase. Should I buy it?

 

White smoke is not always coolant. If you are not losing coolant, it could be fuel burning off from a leaky injector, or just incomplete combustion until your engine warms up.

 

I should consider a TBI rebuild? New injectors?

 

You have MPI, not TBI. I would have a leakdown test done on your engine when it is cold to determine if head gasket is blown.

 

I would call it condensation buildup in the exhaust when initially started. ALL engines blow white out of the exhaust when the ambient outside temp is cold. Consider it perfectly normal. Now once the engine is completely warmed up and several miles has been driven or it is 80+ degrees outside and blows white......then you MIGHT have a problem. If you think you have a head gasket leak...check the spark plugs.

 

White smoke is back on start- up. Oil looks clean, coolant level is good but we got more oil in the air filter box and soaked the bottom edge of filter. Noticed this symptom yesterday after compression test checked out and PCV replacement. But after cleaning the box and replacing filter it's back oily and dirty again. Top end problem? Valve cover gasket issue?

 

How is the oil getting on your air filter?

 

Probably answered already but I dont recommend any 'add-some-goo" to any engine, maybe if an emergency getting already crippled vehicle home...

 

Also, has it over heated ?? Or a leak down test of engine done yet ?

No "milkshake oil" but still losing coolant means more searching for leak, do the test...

 

Gonna replace the valve stem seals

 

White smoke could also be caused by burning off of PS fluid (actually ATF for Toyotas). There is an idle-up valve on the side of the PS pump that could go bad, allowing that fluid to get into the intake. Have you checked the PS pump level yet?

 

PASS do not buy

 

srsly taste the drips of water from tailpipe and spit it out

if sweet = coolant

if arse = oil

 

Try a block test (NAPA part# 700-1006) the fluid will turn yellow if you have exhaust gas in the coolant system. if the fluid turns yellow then your HG is gone or a head is cracked. Pull the plugs and take a good look at them, they can tell you quite a bit about what is burning and temp inside each cylinder.

 

did you find out your issue? im having a similar problem

 

I did find the problem. And i returned it to ZubesAuto Import Cali, for a full refund. That was NOT a good experience. I let my better instincts get away from me and bought the lemon without further assessment. My bad. Buyer beware. Back to square one looking for a truck for my kids college transportation.

Instead of fixng the engine or replacing it, which they said "we always do the right thing" to make the truck right if there are warranty related issues". ZubesAuto violated their warranty which specified all engine mechanical x 30 days of purchase. Instead they said they would not invest any money in it and gave my money back after 2 weeks of back and forth on the white smoke issue and having to take several 200 mile turnarounds for them to "do the right thing", honor the warranty and fix it.

The final diagnosis on the truck was made by Zubes trusted mechanics of site of Zubes business. The trusted mechanics literally just opened the hood, opened the air filter box, saw the oil and said "i aint never seen that before, the engines shot! Might be piston wrings, but the lower half of the engine is shot. Wont be worth working on unless you swap a new engine". That was the quickest engine assessment I have ever seen considering I had, with my own money, had a Toyota dealership give the tacoma a multi point inspection, and a compression that all checked out as OK and compression within accepted psi. I further gave it a hydrocarbon test that came up negative leaving me to believe the engine might still be sound and worth further assessment for Zubes to conduct, find the problem and honor the contract. The only other conclusive test needed I believe was a leak down test to finally conclude the engine health one way or another. Nope, Zubes trusted mechanics just gave it the eyeball surface check and said we're experts, the engines shot. I all was a freakin nightmare working with Zubes, and one of the brother that owns Zubes had me short of kicking his ass for lack of class, and sneaking insults at me out of his SOB piehole. What a nightmare. Tough lesson for me to learn at this age when i knew better. My bad. Buyer beware. Stay away from Zubes Auto http://www.zubesimportauto.com

 

damn i was hoping you would have found the actual cause.

glad to here you got it squared away though even if you haf to get a new vehicle. me ill be pulling plugs akd doing a leakdown test.