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GQ 4.2 petrol presurising & draining coolant

Tech Talk for Nissan owners.

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GQ 4.2 petrol presurising & draining coolant

Post by Articulator »

engine does not run hot until coolant has pumped out down below sender.
pumps out to overflow bottle then sprays all through engine bay.
radiator is cool to touch,cap is not hot ,coolant is not hot.
any suggestions?
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Post by jessie928 »

sounds like your engine compression is pressurising the coolant

headgasket maybe, cracked head maybe

Jes
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Post by simcoz »

Sounds to me like you just need a new radiator cap.
Have hade this happen on a couple of cars.
Corey & Simone
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Post by tj81 »

the other thing ive seen happen other than those mentioned, is if the car is on gas, i have seen a faulty converter pressurising the cooling system with gas.

check cap.

if on gas check convertor

check head / head gasket
92 LWB Ford Maverick 4.2, Dual Fuel.

99 GU ST 4.2 Turbo Diesel, Non Intercooled, Tigerz11 w/synthetic, 35"' Bighorns, ARB Compressor, Snorkel.
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Post by jessie928 »

simcoz wrote:Sounds to me like you just need a new radiator cap.
Have hade this happen on a couple of cars.
yes quite possible also. generally overlooked because thats the firt thing that gets changed anyway.
Jes
ATTACH BROKEN TOYOTA HERE--->
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