Help Please: Coolant Leak - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Zonaman · 05-14-2005, 02:20 PM

My 350 has a small coolant leak (about 1 tablespoon per 20 miles). It pools in the depression around the intake maniflod bolt (Edelbrock) nearest the heater hose fitting. The heater hose/fitting does not appear to be the source as I cannot detect any coolant by running my finger around the fitting and tightening the screw clamp around the hose didn't help. It's difficult to see the source of the leak because it's small and only seems to occur when the engine is run at higher speeds. I suspect the bolt itself

Or worse- a hairline crack in the manifold itself. Could anyone tell me how to isolate the cause and what the fix might be?

Thank you.

05-14-2005, 02:20 PM	#1
Zonaman Registered User Join Date: May 2004 Location: Chandler, AZ Posts: 519	Help Please: Coolant Leak My 350 has a small coolant leak (about 1 tablespoon per 20 miles). It pools in the depression around the intake maniflod bolt (Edelbrock) nearest the heater hose fitting. The heater hose/fitting does not appear to be the source as I cannot detect any coolant by running my finger around the fitting and tightening the screw clamp around the hose didn't help. It's difficult to see the source of the leak because it's small and only seems to occur when the engine is run at higher speeds. I suspect the bolt itself Or worse- a hairline crack in the manifold itself. Could anyone tell me how to isolate the cause and what the fix might be? Thank you. __________________ 69 C-10 LWB, 350, 700r4, 3.73 posi-traction, front disc brakes. Built for the desert- She can take the heat! Vivat Rex Chevus! Last edited by Zonaman; 05-14-2005 at 02:32 PM.



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