bx 19 Diesel coolant leak
bx 19 Diesel coolant leak
Idling the engine, the coolant suddenly started spurting out of the overflow orifice, all over the alternator. I left it for a few hours, started the engine, and the same thing happened. The level and pressure were checked at mot. The level appeared the same after a lot of fluid loss. Radiator is Valeo, 1 year old. I suspect an air leak. I will replace the cap. Any ideas re: bleeding without having to change coolant? Coolant changed 1 year ago.
- Philip Chidlow
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Re: bx 19 Diesel coolant leak
Sounds like head gasket to me, hope not, but even though it was OK at MOT time, it could've just let go now.
But, on the other hand it could be air as you say... Fingers crossed!
But, on the other hand it could be air as you say... Fingers crossed!
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Re: bx 19 Diesel coolant leak
Take the rad cap off, start her up and if u see any fizzing and bubbles in the rad water then the head gaskets a gonner.
Nearly always underneath the motor.
- Tim Leech
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Re: bx 19 Diesel coolant leak
As per the guys posts it sounds like a headgasket, have you tried bleeding the system?
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Re: bx 19 Diesel coolant leak
Many thanks to all for your advice. The headgasket wad only changed last year by my regular mechanic. Is there a DIY mechanic friendly way to bleed the system, without changing fluid? Do I open the bleedscrews on the radiator and thermostat?
- Tim Leech
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Re: bx 19 Diesel coolant leak
It's the same as bleeding radiators at home..,
There should be a bleed screw at the near side on end of the radiator, get the car warm, remove the cap (remove slowly) with heater on full open it slowly, it should have a slot for a flat point screwdriver, hopefully you should get plenty of air out, top up with antifreeze.
There should be a bleed screw at the near side on end of the radiator, get the car warm, remove the cap (remove slowly) with heater on full open it slowly, it should have a slot for a flat point screwdriver, hopefully you should get plenty of air out, top up with antifreeze.
Last edited by Tim Leech on Mon May 18, 2015 9:56 pm, edited 1 time in total.
Lots of Motors, mostly semi broken....
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Re: bx 19 Diesel coolant leak
Mine kinda did what you've described, the thermostat was goosed, try changing that before worrying about the expensive theories already posted. An air leak wouldn't make itself suddenly known a year after a rad change, or have i missed something?
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN
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2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN
I'm not just a username, i'm also called Matthew.
Re: bx 19 Diesel coolant leak
How did it look with the rad cap off and the engine running?
Nearly always underneath the motor.
Re: bx 19 Diesel coolant leak
Many thanks to all for your advice. I'm only just getting to know what's going on under the bonnet.
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