Just finished putting a clutch and hydro conversion in my gsr swapped turbo da. It sat for around 5 months because i didnt have the funds or time to fix it. Well finally got it back together. Ive only let it go through a few idle cycles. For some reason now it smokes at idle. Its not a blue or white smoke more of a vapor as it dissipates quick. It stops when radiator fan kicks on and starts back up when it turns off. I did a compression test and have 210 across the board. What could it be?

 

Is this a fresh build? Meaning you replaced the pistons and what not?

 

No motor is built and has around 6k on it. Never did it before clutch and hydro clutch conversion. It did sit for 5 months though...

 

Could i have water in my fuel?

 

Might not hurt to drain the tank and start over after 5 months.

 

Condensation of exhaust and fuel especially if you have no catalytic converter on the car. no need to drain the tank. let it warm up first to operating temperature, then see what the smoke is. don't panic.

 

Its not white or blue smoke more of a vapor. Weird thing is when the rad fan is on it stops then starts again when it goes off...

 

its coming from the end of the exhaust?

 

Yup out of exhaust

 

Is there a catalytic converter or baffled resonator on the exhaust system? if the answer is no, there's not much to worry about. honestly

 

No cat or resonater just 3 inch from turbo back to vibrant muffler

 

Yep. you're fine. just condensation built up. Its normal, like I said. Let the car warm up, drive, (especially tuned), its harmless. I've had it for years during start up.