To much pressure in radiator

Asked by Jan 07, 2017 at 02:00 PM about the 1989 Honda Accord LXi

Question type: Maintenance & Repair

My 89 Honda accord is building a
lot of pressure in the radiator
which in turn is making water
come out of the radiator cap in the
overflow valve what is causing the
pressure I know the thermostat
has been gutted it's just a room
could that be causing a problem or
is it a blown head gasket

2 Answers


It is possible that the problem is a blown head gasket. Getting a test kit to check for combustion gasses in the coolant may help you figure this out. A kit should be available at most any auto parts store.

2 of 2 people found this helpful.

It's a blown head gasket.

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