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#1
04-18-2014, 08:13 PM
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coolant leak
I have a coolant leak that is baffeling me. After the car ('69 Firebird 350) sits for a while coolant shows up under the intake manifold by the thermostat housing. It could be the thermostat housing gasket, the O-ring @ the front of the intake manifold or the manifold gaskets (the upper rad hose is new and the clamp can't be any tighter). While the system is pressurised there is no leak to be seen. After a couple of days sitting in the garage there is collant on the floor and the source can be traced to the area under the thermostat housing but no hint as to where it is coming from. I don't want to replace the intake manifold gaskets if I don't have to.
How can I detemine where the leak is? Pressure testing will not work since it doesn't leak under pressure. It isn't a major leak by any means but it is starting to p--- me off. Help
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 1969 Firebird 350 convertible, t-5, Carousel Red 2008 Solstice GXP 5speed manual, Sly 2008 Grand Prix, Ink Slate, Winter daily driver 2009 G8, Switchblade Silver, summer daily driver |
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