loss of coolent

[legacy603]

Well guys I'm losseing coolent and the heeds where done about a year ago I was thinking intake manifold gaskets if that doesn't fix it I'll do the block test buts its a small loss maybe 12 to 18oz every 200 or so miles any tips would be great thanks

[mikaleda]

You could have the system pressure tested see if you can see any leaks in the system.

I saw a pinhole leak in an upper rad hose on a Subaru once that caused a similar condition

[legacy603]

I thought the same thing but the only hoses that are not brand new are the heater core hoses

[Fairtax4me]

These can often leak very slowly from the thermostat housing.

 

Intake Manifold gaskets do not see any coolant on these engines. There is a coolant crossover pipe on top of the block beneath the manifold that has separate gaskets. Those can leak as well, but are not very common leak points.

[legacy603]

OK that makes sense is it possible that my heater core is going without leaking. My heat has started to go in and out but not a lot maybe for 30 seconds or so

[keith3267]

OK that makes sense is it possible that my heater core is going without leaking. My heat has started to go in and out but not a lot maybe for 30 seconds or so

This would be a good starting point, but start with the hoses first.  A leak at the end of a hose could appear to be a heater core leak, and since the hoses are a whole lot easier to replace than the core, that's where I would start.  Then do the pressure test or do the pressure test first and look at the ends of the heater hoses for leaks.

Edited December 27, 2014 by keith3267

[legacy603]

OK thanks guys I'll let you know what I find