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1987 Nissan Truck overheats only when climbing hills

Tiny
BUBA
  • MEMBER
  • 1987 NISSAN TRUCK
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 87,000 MILES
My nissan is overheated when climbing hills. Once in a while there is a very small moister under oil cap. I can drive it all over and it is fine until I climb. There is no external leaks. Otherwise runs good. Is it a head gasket going out or the intake gasket. How can I find out.
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Thursday, June 18th, 2009 AT 2:36 AM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

I would first have the radiator cleaned & flow tested by a radiator shop, I feel that it may be part blocked, replace the thermostat as well and if the engine is fitted with a viscous fan coupling have this checked as well.

Mark (mhpautos)
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Thursday, June 18th, 2009 AT 2:42 AM

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