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Patrick L. · 09-15-2023, 11:20 AM

Not much info to go on.
But, the problem is usually the radiator itself. You may be able to take to a radiator shop and have clean it. Or , you buy a new one.
These monsters tend to build up rust in the rear of the water chambers, remove the side water fitting, take a piece of speedometer cable in a drill motor and clean the inside of the engine block.
Are you using a thermostat ? If you are it could be the problem.
This is all assuming the fan belt is tight enough.

09-15-2023, 11:20 AM	#2
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: Radiator boiling over Not much info to go on. But, the problem is usually the radiator itself. You may be able to take to a radiator shop and have clean it. Or , you buy a new one. These monsters tend to build up rust in the rear of the water chambers, remove the side water fitting, take a piece of speedometer cable in a drill motor and clean the inside of the engine block. Are you using a thermostat ? If you are it could be the problem. This is all assuming the fan belt is tight enough.