What causes head gaskets to leak under pressure?
What causes head gaskets to leak under pressure?
Took car to a reputable repair shop and was diagnosed with leaking head gaskets. There are several documented cases of head bolts expanding under pressure and head actually lifting from block.
What causes excessive pressure in the coolant system?
With a cracked or loose return line, air will be sucked back into the rad as the engine cools. Same thing happens if the rad cap leaks air as it cools. The head work is ok. Repeated tests show no gases in coolant system. System was pressure checked for 3 hours with res line plugged at the reservoir.
Why does upper radiator hose keep building up pressure?
Q: Upper radiator hose keeps building up a lot of pressure and popping off. Car loses coolant and over heats. My upper radiator hose keeps building alit of pressure and popping off and car loses coolant and overheats. I changed radiator cap after reading that could be problem. My car has 191400 miles. Hello, thank you for writing in.
What causes Excessive crankcase vaccum in a car?
At idle and low revs and other times when manifold depression is high, such as during overrun, crankcase emissions tend to be drawn through the pcv valve directly into the manifold and at other times, when engine speed and load increases the venting increasingly takes place through a second vent into the air cleaner or intake.
Why is the pressure on my car so high?
Engine Cooling Problems. Heat from the radiator transfers to the condenser and cause the pressure to rise due to the warmer refrigerant. It is possible the space between the radiator and the condenser has become clogged with debris. The entire cooling system should be checked and cleaned thoroughly in order to solve the high-pressure issue.
With a cracked or loose return line, air will be sucked back into the rad as the engine cools. Same thing happens if the rad cap leaks air as it cools. The head work is ok. Repeated tests show no gases in coolant system. System was pressure checked for 3 hours with res line plugged at the reservoir.
Why is the pressure on my a / C so high?
Heat from the radiator transfers to the condenser and cause the pressure to rise due to the warmer refrigerant. It is possible the space between the radiator and the condenser has become clogged with debris.
Took car to a reputable repair shop and was diagnosed with leaking head gaskets. There are several documented cases of head bolts expanding under pressure and head actually lifting from block.
