Ok guys looking for help/ advise. I'll start with the problem. My coolant from my radiator keeps filling my overflow tank and not going back into the radiator and cooling. I've recently put a new 302 motor in that was built by my father but machined by an engine shop. Engine block was cleaned and bored I think 30 over. Heads were redone also, new valves, springs, and new valve seats. I'm running the stock radiator (was tested by a radiator shop) stock flex fan with the stock fan shroud. I stuck a new 160 degree thermostat in also.
The motor is not over heating at all, running around 160- 180. Today I decided to do a Combustion Leak test and the liquid turned from the dark blue to a green color. After doing this test and letting it sit for about 3 hours I noticed that my overflow tank is almost empty now. It got sucked back into the radiator. This is that part that blows my mind why it has never done it before and after doing that test it sucks it back in.
I pulled all the plugs last night and they all looked great.
Can someone give me some advice on what I could do next for a test or if anyone has had this issue before.
Thanks in advance,
Bryan
The motor is not over heating at all, running around 160- 180. Today I decided to do a Combustion Leak test and the liquid turned from the dark blue to a green color. After doing this test and letting it sit for about 3 hours I noticed that my overflow tank is almost empty now. It got sucked back into the radiator. This is that part that blows my mind why it has never done it before and after doing that test it sucks it back in.
I pulled all the plugs last night and they all looked great.
Can someone give me some advice on what I could do next for a test or if anyone has had this issue before.
Thanks in advance,
Bryan