1987 Honda Civic 87 Honda running hot - no heat from heater

RCKY_HRVY

MEMBER
1987 HONDA CIVIC

Engine problem
1987 Honda Civic 4 cyl Front Wheel Drive Automatic 163k miles

My 87 civic project car is running hot under acceleration, miles/months after head exchange. I've replaced hoses, t-stat (even removed @ one point), flushed system, etc. Honda's of this era have a bleed-off valve for cooling system. I've pressurized the system and used the bleed-off for ANY possible air in the system. No water/oil mixture on dipstick, no oil in the cooling system. I'm at a loss! Any help?

2 Replies

FISHERMAN

MECHANIC
937 POSTS

How about ignition timing?

Did you checked the timing?

1.3 or 1.5 engine?

Carburator or EFI?

Let us know.

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Sunday, January 6th, 2008 AT 5:47 PM

RCKY_HRVY

MEMBER
2 POSTS

How about ignition timing?

Did you checked the timing?

1.3 or 1.5 engine?

Carburator or EFI?

Let us know.[/Quote:b1dd584c6f]

I should've given that info. Originally. Sorry. It's a 1.3 litre and it's carbureted. The car is timed and it runs great! Has some issues with starting (hard start), other than that and overheating. It runs like a champ. I've also noticed that it's building a lot of pressure in the radiator upon startup. Originally, I thought the heater core was plugged after the rebuid. Found that water flows both directions through it and through the bypass when heat/cool switch is in cool.

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Monday, January 7th, 2008 AT 7:45 AM