Someone help me out I’m stuck engine keeps boiling coolant after about 20 mins the thermostat has been bypassed chAnged water pump radiator and pipes new head gasket no crack in head so what the held going on also wording been modified to bypass thermostat

 Did you ever get the fan spinning at idle?

Think it stops or slows alot

 So you have a fan issue. Did you ever just hook a battery to the fan? So when you checked the impellor, did it spin when you kicked the motor? Did you try spinning it with your finger? The threads can strip, so they never push enough coolant.  

It’s had new water pump shaft seals ect the fan works with battery and now as bypassed thermostat

And yes impelor spins wen liked over

 If the water pump and fan work correctly, no head gasket leaks and no water in oil or no oil in coolant. The only two things left is a blockage or air lock.

Just throwing this out there is the fan pushing or pulling air.

I’m starting to think it’s radiator as it bypassed thermostat and it’s running wen revs are up but shuts off wen you idle

Edited January 14, 20197 yr by r1chard06