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I investigated the coolant leak yesterday (Sat) and after around an 1-1/2 of removing pipes, covers, cables and brackets, I came across the thermostat housing.
Looking closer and drying off the housing I pressurised the cooling system and saw a small leak of coolant from the area circled.
This was under a pressure of 20 psi, the coolant tank cap states 16 psi.
I would thing that under normal operating pressure and a warmed up engine, the crack would expand causing an even greater leak.
I a week of using the vehicle, the water level has dropped around an inch from the cold fill level mark, so looks like a new thermostat housing along with a couple of dubious hoses. A PO or someone has had a go at repairing other areas of the assembly as there is what looks like black sealant near to some hoses.
On a further note I also noticed that the nearside bank intake manifold has a nice dry but sooty coating to the inside of the pipe connectors.
The offside bank is wet sticky soot.
Could this be pointing to a turbo issue?
Car does not use any oil or has any blue smoke from the exhaust.
Steve. 1968 Series IIA Pastel Green, nearly there project
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31st Jan 2016 11:08pm
