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hi all
just wondered if anyone has come accross this. When i fill my coolant/expansion(on my audi 80 saloon 1984) tank it seems to be dry almost immediately after a decent run yet shows no signs of overheating. The previous owner says this was always the case and he had no problems just wondered if this was normal? sounds dodgy to me.
The hoses coming from the tank seem fine so i can only assume a leak in the rad but, as i say there appears to be no overheating problems even on a long run.
thanks
john
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I'm not very good with cars
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If there's still plenty of coolant in the system, but not enough to fill the expansion tank, I wouldn't have thought it'd be enough to cause overheating. But, looks like you're losing it from somewhere, and eventually you'll run out of water! ;D
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harris66
Part of things
drive it, break it, fix it and make it quicker!
Posts: 699
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as above, its going somewhere and will only get worse......
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1.2 corsa daily, 1.8t a4 avante, 6.3ltr austin a40....
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Have you checked the coolant level by topping it up from the filling point on the engine itself, instead of just pouring it into the header tank? Just in case there's not enough in the block and it's just siphoning it all in from the header.... My dad's KV6 did this. Conclusion was that it was either a pin leak that was letting it into the combustion chamber and burning it off (but not in an OTT fashion), or at shutdown when the pressures dropped in the chambers coolant was seeping in, then being burnt off at startup. Or alternatively, a duff core plug that we couldn't see leaking. Like Harris says, it's going somewhere....... Just keep on top of it and you might get by though!  |
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bazzateer
Posted a lot
Imping along sans Vogue
Posts: 3,653
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Empty a bottle of BARS LEAKS into the rad'. If the leaks is that minor it should seal it.
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1968 Singer Chamois Sport
1972 Sunbeam Imp Sport
1976 Datsun 260Z 2+2
1998 Peugeot Boxer Pilote motorhome
2003 Rover 75 1.8 Club SE (daily)
2006 MG ZT 190+ (another daily)
2007 BMW 530d Touring M Sport (tow car)
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My old Golf used to do the same. The expansion tank was cracked, it would heat up, expand and chuck all the coolant out. If it's not that, change the cap the seals get old and brittle. My Golf did that too.  |
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Last Edit: Jan 9, 2008 14:43:23 GMT by Jack
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'Twas a dodgy rad when I had this trouble, leaking between the matrix part and the tank part which were parting company...
[Edit: Come to think of it I still have this trouble, I just haven't driven that particular Sierra for eighteen months!]
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My fleet:
Suzuki GSX-R600Y SRAD with bald, melted tyres
A borrowed Mondeo
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namless
Club Retro Rides Member
Posts: 577
Club RR Member Number: 26
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yea i got the same problem with my volvo, found the leak its around the water pump gasket. It does not leak when the engine is cold leaks but leaks sometimes when the engine is hot... I got to fix it.. I got to fix it!
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Do not put a barrs leak in it, it will only make matters worse.
Are there any bleed screws in the cooling system?
It might be worth getting it pressure tested.
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