i put in a new radiator,old one had leak after flushing it out.
my problem is truck does not run hot like it did with the original radiator,but it keeps pushing antifreeze out of the overflow tube,could it be head gaskets?? does not over heat has lots of power and runs very well. also put new water pump and new timing chain and gears, been working on dodges for years,never seen this before.only has 127,000 for a 93 low miles,also was fleet maint.

 

anyone please help,at wits end

 

Does it do it constantly or only after it first warms up? If you don't have an overflow container do not fill the radiator clear full ( leave about an inch of air space). You may also have a bad cap.

Open the radiator cap, preferably when cold. Start the engine and look in the radiator at the coolant. If you see bubbles you are seeing exhaust gases in your coolant. You may have to wait until the engine warms up for the bubbles to appear. I hope you don't see bubbles. If you do see bubbles it could be head gaskets, cracked heads, or cracked cylinders.

 

it does not do it all the time only when hot after thermastat opens to let hot antifreeze back to radiator,had cap off when warmed up but did not see any bubbles.
let it run for 30 min. it was 93 outside today did not run hot or overheat,cant say for sure but it may have stoped pushing out.

 

They make after market overflow systems that should eliminate the problem. About $10.00