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#1
07-01-2006, 10:54 AM
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White smoke only on startup with low coolant
My truck has quite a bit of white smoke only on startup. I noticed it was getting rather hot. Upon checking the coolant I noticed it was low. After I filled it backup it seemed fine. But when I checked back later it seemed low again. I had checked where I parked for signs of leakage but did not find anything. Where do I start? Thanks in advance!
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#2
07-01-2006, 11:17 AM
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Re: White smoke only on startup with low coolant
I would start with a coolant system pressure test and leak down. Then possibly a compression test to narrow out the possiblity of bad head gaskets. What year is it and what motor? The Vortec 350's are bad about intake gasket leaks.
__________________
Matthew Brough  1997 Geo Prizm -- 301,000 miles 2000 Honda Accord -- 225,000 miles 2004 GMC Yukon XL -- 223,000 miles 1987 Jeep Comanche -- 116,000 miles 
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#3
07-01-2006, 06:05 PM
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Re: White smoke only on startup with low coolant
no foam or milk in the oil right ?
do a leak down test sounds like it is leaking into an intake runner or into a cylinder after its shut off but if it gets to much into the cylinder and you go to start it and the piston compresses that water and prevents the piston from coming up(hydraulic lock) then you can have a big problem with a rod bearing sounds like it is time to park it until its fixed good luck
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#5
07-03-2006, 10:55 AM
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Re: White smoke only on startup with low coolant
Pull the dipstick, like just checking oil level....
If it is really foamy, or looks like chocolate milk coolant is leaking into the crankcase somewhere. Anyway, I agree with the above poster try a leak down test, and check the oil, let us know what you find and we will try to help.
__________________
Matthew Brough 1997 Geo Prizm -- 301,000 miles 2000 Honda Accord -- 225,000 miles 2004 GMC Yukon XL -- 223,000 miles 1987 Jeep Comanche -- 116,000 miles
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