Engine overheats after intake gasket replacement

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11-05-2015, 12:18 PM

Stevolwevol

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Car: 86 IROC Z, 92 RS

Engine: 305 4bbl, 305 TBI

Engine overheats after intake gasket replacement

My 92 305 TBI is overheating after replacing the intake gasket. I had a mechanic do the work and he doesn't know. I can't get it over to him due to it getting hot. I replaced the thermostat, and it seemed to work, but the temp gauge fluctuated more than usual. I let the engine cool a bit, started it, and it started to overheat again. The top hose was cool as if the thermostat was stuck shut.

I am perplexed as to why this is going on, so if someone has an idea I'd be happy to hear it.

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11-05-2015, 12:32 PM

Twin_Turbo

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Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98

Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI

Transmission: T5, 700R4, T5, 700R4

Axle/Gears: 3.08, 3.27, 3.45, 3.27

Engine overheats after intake gasket replacement

Air trapped and steam making your needle peg to red. Let it burp and turn heater on

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11-05-2015, 01:37 PM

Stevolwevol

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Car: 86 IROC Z, 92 RS

Engine: 305 4bbl, 305 TBI

Re: Engine overheats after intake gasket replacement

Quote:

Originally Posted by Twin_Turbo

Air trapped and steam making your needle peg to red. Let it burp and turn heater on

I took the thermostat out, and it runs nice and cool. Maybe this will get the air out. I swapped the thermostat, so when it's cool I will drop it in and see what happens.

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