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vk commodore distributor hold bolt thread on the engine side leaking radiator fluid.

Hi any ideas on how to fix please. Leaking water from the small gap which the bolt screws into which holds the distributor in place. Its the distributor hold bolt thread mount. on the engine. How's that possible to have coolant leaking from there???please help.

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are you sure its coolant ? Not oil? If Coolant I would suggest it is coming from somewhere else and pooling there? Can you pressure test the cooling system ?

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Andrew

The Heater Pipes run right over the top of the Distributor.

Make sure there is no coolant dripping from them ...

http://holdenpaedia....

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T

My Shed

Holdenpaedia, they're the brakes Mate.

Thanks for your comments. I checked hoses all good. Its green coolant. Not sure why. Its collecting at the top of oil pump. Took a camera and try to see were its coming from, could only see it wet around the bolt which holds the distributor. Can't see it wet any were else. Is there any welsh plugs behind distributor? Is it possible to be a small leak from that hole which the bolt goes in? Where else could the coolant be coming from other then the hoses above? Thanks heaps

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No coolant on the inside of the bonnet? You can get pin holes in hoses, radiator, water pump etc that can spray up onto the bonnet then drip down on engine components.

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Regards Blue

Coolant may be getting blown back from somewhere. All the welch plugs are on the manifold side of the engine so not likely to be them.

Be aware of the famous leak from the spill hole in the water pump that can appear and disappear ...

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My Shed

Holdenpaedia, they're the brakes Mate.

Hi thanks, I can't find where its coming from as the hoses are dry. I keep finding a line of water on top of the oil pump. Strange mystery?? I will see if its spilling from the overflow tank lid ?? Any other ideas? Thanks. See picture, green coolant on left side of pic.

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Do you see any evidence of coolant appearing while the engine is running at idle or under power?

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My Shed

Holdenpaedia, they're the brakes Mate.

Coolant from a leaking thermostat housing will often run along the top of the engine side cover behind the small gap in between the side cover and block where it can't be easily be seen then down between the two side covers plates onto the oil pump etc. And the hot head/engine dries off the bits near the head first making it hard to trace.

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Regards Blue

my thoughts as well......

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Thanks. Cant see any evidence of leaking while engine is running, and thermostats dry no leaks there? Is there any water traveling that side of engine other then the hoses above oil pump ?? Might have to keep an eye on it and see when it gets more serious as it looses about one cup of coolant a week at the moment. Thanks for your comments.

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a good way to test for and find leaks is to pressure test the system when it's cold

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Andrew

You could seal the bolt with Thread Tape to prove coolant is coming from there.

Some people have posted that the bolt needs to sealed anyway.

Also, check the dipstick for coolant in case coolant is leaking into the sump.

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My Shed

Holdenpaedia, they're the brakes Mate.

Thanks for your comments. Is there any water Chanel's around that area? I don't think its coming from the bolt as it shouldn't have any water in that part of engine. It was although covered with coolant when I was looking. It must have travelled there from somewhere else, but where?? The engine oil is fine, no coolant in it. Mystery as to where the coolant is coming from. All dry everywhere else??hmmm? Thanks

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you would think there maybe some tell tales signs if it is coming from somewhere else - but sometimes the engine fan blowing, coolant dripping onto belts and being flung off can leave it in strange places... my daughters vectra recently had a tiny split in the top radiator hose in a spot very difficult to see without a mirrow...the coolant was dripping onto the drive belt only under pressure (so hot) and was then being spayed onto the bonnet sound deadening sheet...it then worked its way to the back of the engine so it looked like it was coming from the rear and possibly a heater hose...often radiator/cooling system experts and mechanics will put a pressure gauge and pump in place of the radiator cap...pressurise the system to say 1.3 x working pressure and look for leaks when system is cold and nothing is expanded from the heat and nothing is moving to disturb any leaking coolant ...

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Andrew

Don't overlook the Water Pump leak I mentioned. This is notoriously tricky.

Immediately after a hot shutdown is when the leak appears. Coolant drips from the hole in the bottom of the pump. This is because the coolant pressure peaks just after shutdown and disappears at every other time.

Any pooled coolant will be blown rearwards on the next start.

Look for coolant on the ground immediately after a hot shutdown.

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My Shed

Holdenpaedia, they're the brakes Mate.

could be coming from head gasket coolant holes/bolts not properly sealed. the permaseal gaskets i find weep here whereas the acl monotorques or race series never did.

dissy bolt is a blind hole. even if it wasnt it would go into the crankcase = oil not water.

every water pump weep i have ever seen stains the timing cover.

i have seen weeps from the bottom of corroded thermostat housings (the part that bolts to the head not the top outlet)

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i have to agree with ben. i have a weepy head gasket on the fc (202) between 2 and 3 cylinder.occasionally it will drip down but usually just a couple of little droplets, only shows up after shutdown .its been like that for two years doesnt cause any other problems.

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Thanks heaps for your comments. It sounds like a weepy head gasket. Thanks.

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