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zfjohnson07

91 gtr white smoke

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I did research before posting

Drove down the street and saw white smoke. Pulled over, checked spark plug wires to make sure they were seated properly and pulled one at a time to hear the idle change. Oil looks fine, put royal purple in around 400 miles ago. Antifreeze looks good. So when I start it white smokes bad. I’m not sure if it is a head gasket or turbo seal issue. Checked compression on a cold engine and got 125 on all 6. Previous owner said it has tomei head gasket. I’m leaning towards turbo, any help would be appreciated

 

i attached one video of the exhaust and the other is the engine. One person said motor is bad, but want to verify it.

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My guess is turbo seal, water getting into exhaust housing. Pull the intake pipes off and have a look.

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22 hours ago, niZmO_Man said:

My guess is turbo seal, water getting into exhaust housing. Pull the intake pipes off and have a look.

Keep an eye on the engine oil and coolant level just in case it is head-gasket, although thinking niZmO-Man is on point, turbo off time.

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As previously mentioned I would first check out your turbo buddy and check it is in good condition. 

If it proves to be in good condition, I would get a radiator pressure testing kit. It will pressurize the cooling system and you will find where its leaking from. Make sure to take out spark plugs when doing this, as it may fill up the cylinder with coolant and you do not want it to hydrolock. Turn it over once the test is down with the spark plugs out to be sure. 

 

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U could try running the turbo without coolant for a minute or so and see if the white smoke still happens.

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