Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks
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Hello, I just recently started having an issue with my 1930. After a drive when the motor is turned off it will puke some coolant out of the overflow. I noticed some gurgling noise coming from the engine as well when this happens. It does not appear to be overheating. I even checked with an IR thermometer and the block was 150-160. My research is saying it could be air getting in through the water pump packing? Figured I’d ask the experts here for advice.
Often a sign of overfilling. Where do you fill it to when you refill? It should be just over the core fins.
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1938 Master Business Coupe-Sold, now living in New Jersey
1953 210 Sedan
Im having same issue with my 1938 Chevrolet. A local member told me not to install a thermostat, but it was not needed in California so there’s no thermostat on my engine. I just refilled the coolant and I’m getting overflow out of the overflow tube while the engine is running. Could this be overfilling? I filled it up to the top of the radiator cap.
I am using the Evans coolant.
Could this be overfilling? I filled it up to the top of the radiator cap.
Almost guaranteed. Fill to cover the fins and call it good. As the coolant heats it expands. If you fill to the top it has to go somewhere. I disagree with the thermostat advice you were given.
7046 old site posts
Save a life, adopt a senior shelter pet
There are many good people. If you can't find one, be one.
1938 Master Business Coupe-Sold, now living in New Jersey
1953 210 Sedan
@tiny just over the fins and then let it find its own level. This was different and the level was quite a bit low afterwards.
Other folks will have ideas when they find this thread. Hopefully we find the answer for you.
7046 old site posts
Save a life, adopt a senior shelter pet
There are many good people. If you can't find one, be one.
1938 Master Business Coupe-Sold, now living in New Jersey
1953 210 Sedan