Rad fluid leak around rear seal

Ok, just replaced the alternator this morning and found drops of rad fluid around the rear seal. Break it to me gently, what could this mean?

Reply to
Al McFarlane
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Al,

HUH?? The REAR Engine Oil Seal? We talking about your 89 Nissan 240SX right?? Was the leak on the bottom part of the transmission housing where the engine & transmission are bolted together?

Bout the only places where you would find radiator fluid leaking from are around the 1). water pump, 2). radiator hoses that connect to the radiator & engine block, 3). the heater hoses that run from the engine block to the firewall & heater inside your car, and finally

4). the coolant lines that run underneath the intake manifold. You hardly ever have any leaks where the engine & tranny bolt together. It's possible that you could have sprung a minor leak around the coolant lines that run underneath the intake manifold. That's more plausible than leaking around the engine/tranny housing.

Only way you gonna know for sure if you have a coolant leak is to pressurize the cooling system with one of those pressure gauges & see if there is a drop in pressure.

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cheaper way of testing your cooling system..
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'll have to pressurize the cooling system to 23 psi, (applies to a 95240SX..not sure about yours), and see if the pressure remains constant or drops. If it drops then youdefinitely have a leak...as to where it is, you're gonna have to take a bright flashlight & hunt it down. If you can't find an external leak, then you could have blown a head gasket & your coolant's leaking internally. You'll see proof of it in your exhaust emissions...white smoke out the tail, in your engine oil or radiator...oil & radiator fluid mixed together.

Anyhow, hope this helps...

ID '95 SE

Al McFarlane wrote:

Reply to
REMOVETHISidlafie

The usual suspects are probably obvious around the front of the engine, so I'll suggest others, like a core plug on the block or, more likely, a leaking head gasket. Look for a stain or rust spot where the head meets the block. How do the spark plugs look? If they look real clean, then coolant is getting into the cyls. and scouring them. When you accelerate, you may see white smoke. If you rev. too high, pressure may cause the water to back up into the coolant overflow and out on to the ground. You can add up to 2 tubes of Aluma-seal to CLEAN coolant in the rad. as a TEMPORARY fix to try to delay a head gasket replacement.

Reply to
Sue D Nim

yes it was were the two meet.

Reply to
Al McFarlane

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