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3100 coolant leaking onto starter


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Posted

Looked at somebody's 3100 today and appears to have coolant leaking onto the starter vacinity, but it might be from the bleader valve. The thermostat housing doesn't appear to be leaking and doesn't look like anything is leaking from any nearby lines. Wondered what other possibilities exist. Oil is clean. Car is a 96 with 190K on the clock.

Posted

Upper Radiator hose, or quite random but a crack in the thermostat inlet pipe... are you running dexcool?

Posted

could be a water pump also

 

water pump is on other side of the motor, if it was leaking it would end up on the vally between the ac compressor or on the ac compressor

Posted

Check the coolant hoses/pipes under the TB. It could drip onto the trans and down onto the starter. Best bet is to put a pressure tester on it. Autozone rents them.

Posted

check intake gaskets

does this commonly cause external leakage?

 

im not sure, but I have had that happen to me once and it was either the gaskets or an o-ring on the heather line going the heather core

Posted

could be a water pump also

 

water pump is on other side of the motor, if it was leaking it would end up on the vally between the ac compressor or on the ac compressor

 

That is correct. Now if you were saying that there was coolant on the acc. belt, then it'd definitely be the water pump.

 

check intake gaskets

does this commonly cause external leakage?

 

im not sure, but I have had that happen to me once and it was either the gaskets or an o-ring on the heather line going the heather core

 

That is incredibly unlikely to be the cause of an external leak unless the UIM is not torqued to spec. Check the upper rad hose and go from there.

Posted

no... it can leak to the outside. usually they leak to the inside though. maybe 1 in 20 leaks out and not in.

Posted

I think it's the intake gasket, only because when mine went, the coolant dripped from near the oil pump drive, ran down the block and soaked the starter.

  • 4 years later...
Posted

I am thinking freeze plug in between the motor and transmission, Ive seen one so bad it was blowing steam from where the starter connects to the flywheel, .Lots of work for three freeze plugs!

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