Reply With Quotegetting any bubbles in the coolant tank? milky oil? sounds like a head gasket
Master
Hi All,
Hoping you fine lot can help me out.
After driving my newly aquired D1 for about 3 weeks with no mjor dramas (except for the strange ping/squeek sound under load) it left me standed a long way from home on Friday.
Almost without warning, the temperature sky rocketed and it dropped water. After limping it home (with lots of stopping, waiting and more water) I utilised the search on this forum and decided to buy a new themstate and pressure cap. I also flushed the radiator.
Took it for a 15 min drive and the temp was fine. Took it out the next day and after only 10 mind of driving the temp started rising quickly. Drained the radiator again and slowly refilled making sure there are no air locks.
Heat coming from the heater is consistant and hot.
I can't seem to drive it for more than 10 mins without it over heating.
So far I a have:
1. New thermostat (I even drilled the hole in it making sure its was at 12 o'clock)
2. New pressure cap on the coolant box (it is the clear one, not the OE black one whic I have read are prone to leak)
3. Checked the hoses for pressure build up when running. Good pressure so i assume the water pump is working.
4. Tested the fan clutch,which seems to have soem resistance, but when hot "free spins".
It seems like there is excessive pressure build up as teh top hose was ballooned and teh pressure cap is spewing water when it gets hot. Ive tested 2 different caps and both do the same thing.
Starting to suspect the combustion gases are getting into the cooling system and over pressurising it. , But I hope not.
Can anyone suggest some simple tests i can try to try and isolate the issue?
Master
getting any bubbles in the coolant tank? milky oil? sounds like a head gasket
Master
No, thats what i was thinking, but no oil in water or water in oil... no obvious sign of a head gasket problem.Originally Posted by ade
Swaggie
SubscriberIf you have a V8, which you have not specified, it is unusual to have any contact between oil and water as there is only one water passage at each end of the head. If the gasket has gone at the end of the head , then the radiator will be pressurisedNo, thats what i was thinking, but no oil in water or water in oil... no obvious sign of a head gasket problem.
Do a compression test.
Regard sPhilip A
Master
Thanks. yes it is the V8, not what I was wanting to hear, but suspected it would be the case
can anyone advise the costs involved in changing the head gasket on one of these? From what Ive read here the composite gaskets are the best - does anyone have any other infor on these?
Also, will I be needing to mill the head and/or block and if so, what sort of cost would be involved?
Wizard
If I am reading that correctly; it isn't mean to free spin when hot.
It should have lots of resistance when very hot so that it spins closer to the engine speed and provides full air flow.
Wizard
new viscous unit, and how old is the rad it might need coring
Master
SubscriberStart with the radiator being rodded,
The radiator mob will tell you if it's beyond rodding
The viscous fan should be roaring when engine is running hot,
This is a good place to start, because if you do have a h'gasket problem you will want to do these 2 things anyway after doing your top end.
Master
Thank all. I'll put on a new viscous fan clutch, fill again with coolant and see how she goes. If it still gets hot/over pressure I'll pull the heads. May as well do the simple things first.
G,day Shamat.Before pulling the heads ,get the radiator checked out -as previously suggested ,if it is a gasket it would be false economy not to have the radiator serviced.Best of luck Lochiehttp://www.aulro.com/afvb/images/icons/icon7.gif
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