Can a cracked intake manifold cause overheating?

SONNY.1981

MEMBER
1998 HONDA PASSPORT
170,000 MILES

Yes I have been trying to find out why my car overheats. I have replaced all cooling componets and I have no water in my oil or smoke out the exhaust. Took it to a mechanic and he recommended changing the motor but never broke it down to diagnose the problem and when I got the car back I noticed coolant on top of the intake manifold. Could this be my problem or is it probably a cracked head or blown head gasket?

Thursday, March 8th, 2012 AT 12:40 AM

2 Replies

ASEMASTER6371

MECHANIC
52,796 POSTS

A leak down test for the cylinders will tell if you have internal engine issues. A pressure test will tell you where the leak is coming from.
Make sure the radiator is not clogged.

Roy

Was this

answer

helpful?

Yes

No

Thursday, March 8th, 2012 AT 12:43 AM

SONNY.1981

MEMBER
7 POSTS

I did the radiator cap pressure test and the pressure slowly dropped just a little bit but could I be losing pressure on the intake? Its the only place I see coolant. Near where the thermostat is but not coming from the thermostat itself. But would that be the cause of the overheating or is it more likely a head gasket?

Was this

answer

helpful?

Yes

No

Thursday, March 8th, 2012 AT 3:16 AM