I have a 1978 250 from a C10 that has sprung a coolant leak at a engine block port that has a sensor in it. The port/sensor is located on the drivers side towards rear of engine block under manifold. Does anyone know what this sensor is, whether there is a gasket underneath that I can replace, or, is there a plug I can get to plug it if not going to use the sensor?
That's not a sensor- - - -it's a block heater in a freeze plug hole. Either replace it with a new one, or move a few hundred miles south where you don't spend six months a year with the weather below freezing. If you don't think the engine needs it, just replace it with a regular steel cup plug. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
be happy it's the plug hole leaking, easy fix one of my 235s sprung a leak in nearly the same spot, but right in the side of the casting, just south west of your leaking block heater it's as if the casting was bad from the factory and just took many years to finally leak my plan is the butter it up with some JB Weld in the spring time. -s
