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| Home > Help Needed / General Tech Chat > gremlins in a mpi again | |||||||
 2975 Posts Member #: 10749 Post Whore lowestoft suffolk |
2nd Feb, 2015 at 06:54:48pm
Hi guys my friend has a 2000 mini cooper sport mpi and one day it just suddenly got hot and boiled over... hes done a few things with no hope and the garage had a go and they are stumped... thought you guys would have more of an idea.. any ideas welcome please!! Heres what he sent me about what its had done so far.." New temperature sensor, expansion tank cap, rover approved wiring mod. Electric fan runs when disconnected and engine doesn't boil, it had a new thermostat before I had it, compression test ok. Still boils in expansion tank top and bottom hoses hot but top one hotter" Edited by D4VE on 2nd Feb, 2015. On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol NOTHING GETS PAST ME!! 
1/4 mile 14.7 @ 96mph 12psi boost Showdown class A 2nd place 18.6 @ 69mph |
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 6729 Posts Member #: 618 Post Whore Glasgow |
2nd Feb, 2015 at 07:01:58pm
Has the pump been checked? |
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2096 Posts Member #: 1111 Post Whore s wales |
2nd Feb, 2015 at 07:14:11pm
its boiling over with the fan running??
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2096 Posts Member #: 1111 Post Whore s wales |
2nd Feb, 2015 at 07:15:46pm
also check for other leaks in the cooling system if I is venting to air it will allow the coolant to boil. |
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 3673 Posts Member #: 9300 Post Whore Quarry Bonk |
2nd Feb, 2015 at 07:31:22pm
Blocked up rad? On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!! 17.213 @ 71mph, 64bhp n/a (Old Engine) |
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 10022 Posts Member #: 1456 Mongo Barnsley, South Flatcapshire |
2nd Feb, 2015 at 08:11:03pm
Water pump. If something is worth doing, it's worth doing half of. |
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 9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
2nd Feb, 2015 at 08:37:07pm
1/ water pump impeller flopped off shaft, inside pump to block.
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2975 Posts Member #: 10749 Post Whore lowestoft suffolk |
2nd Feb, 2015 at 09:05:12pm
I have sent my friend whos mini it is the link to this page... i must say thankyou for all the ideas/suggestions/advice 👍 On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol NOTHING GETS PAST ME!!
1/4 mile 14.7 @ 96mph 12psi boost Showdown class A 2nd place 18.6 @ 69mph |
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95 Posts Member #: 10924 Advanced Member Wroclaw/Poland |
3rd Feb, 2015 at 07:10:57pm
+ 1 on the thermostat - either s**ty or fitted wrong way round
Made in Poland build thread:
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2975 Posts Member #: 10749 Post Whore lowestoft suffolk |
3rd Feb, 2015 at 07:17:52pm
I know that the thermostat was done before he brought it, he brought it at the i.m.m and drove it home and done a run to the ace cafe all fine... but started this problem on a simple run into town.. he said he shall wip the waterpump off n see On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol NOTHING GETS PAST ME!!
1/4 mile 14.7 @ 96mph 12psi boost Showdown class A 2nd place 18.6 @ 69mph |
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
4th Feb, 2015 at 07:59:19am
Thermostat should sit above the sandwich plate. Youd be surprised how many people pit it back with it sat in the head.
On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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108 Posts Member #: 9182 Advanced Member |
4th Feb, 2015 at 11:08:30am
Mpi expansion bottle has a known weak spot where the hose goes on, check for crack. |
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2975 Posts Member #: 10749 Post Whore lowestoft suffolk |
4th Feb, 2015 at 07:00:54pm
Doubt its thermostat as was ok for ages... ? And would it still boil over if had a crack in expansion bottle? I believe the fan does kick in.. seeing him tonight so will find out On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol NOTHING GETS PAST ME!!
1/4 mile 14.7 @ 96mph 12psi boost Showdown class A 2nd place 18.6 @ 69mph |
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 696 Posts Member #: 10034 Post Whore Birmingham |
4th Feb, 2015 at 09:27:27pm
On 4th Feb, 2015 D4VE said:
And would it still boil over if had a crack in expansion bottle? Yep, it will boil closer to 100 C if the system can't hold pressure well. Boiling point (of plain water) with a 7.5 PSI cap is roughly 112 C, and with a 15 PSI cap it's 121 C Worth pulling the thermostat out to test in hot water. At the same time run the engine to see if it pumps water out the top of the head to see if that pump is still in one piece. Edited by PhilR on 4th Feb, 2015. |
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