MG ZT 190+ ? Headgasket failure - Page 2

jpwilliams · 12th May 2009, 06:42

Not sure now Phil. Garage has car.

stocktake · 12th May 2009, 06:44

Morning JP, No manners this lot,

to the club, sorry to hear you are having problems.

HGF is very inlikely on the KV6 but not unheard of. It would ony fail if severly overheated. This is usually caused by leaking T'stat or a faulty fan.

Depending on the age of your car it may have a two or three speed fan. Three speeders are a known weak spot whilst two speeders are very robust once the original resistor is upgraded ( this runs the slow speed)

To check the fan, start engine and turn air con to low ( make sure it is not in economy mode) and the fan should run, if it does not then work is reqd on the fan.

In your case it is more likely to be stuck stat, water loss or faulty sensor so get the garage to check that side out first, look for water in the V of the engine, thats where the stat lives.

Good luck and please keep everone informed

jpwilliams · 12th May 2009, 06:45

Kaiser
Cooling levels fine just HOT according to garage

jpwilliams · 12th May 2009, 06:48

Thanks for the welcome Dave! Will speak with MGR garage guys this morning about your advice & ......well we'll see!
Paul

Greeners · 12th May 2009, 06:57

Welcome along..as others have said, thermostat, fan and header cap are more common then head gaskets on the V6. Not doubting the competency of the garage, but unless they are Rover experienced, they may miss diagnose HGF as "they all do that sir", which is untrue on the v6.

Zeb · 12th May 2009, 08:11

It could simply be a failing header tank cap?

kaiser · 12th May 2009, 09:55

If your cooling level is fine, then you have a problem with the fan not coming on correctly, or a thermostat which is stuck close.

However garages being what they are, verify you water every day, don't trust the gauge and check for leaks in any case, mainly in the V, thermostat housing, on the RH side, water pump and in front, where there is a couple of long hoses.

If fan, temperature should be normal on open road, too high in town.
If thermostat, trouble all the time.

And I can't resist this one.

Take a Disprin and phone me in the morning!

Added: an outside chance that the temperature sensor is faulty is possible.

Jules · 12th May 2009, 23:04

Hi Paul
Like Dave (Stocktake) & others say, could be cooling fan or lack of !

If Temp Gauge read that Hot, you would have (should have) heard the sound of an Aircraft (cooling fan on full speed).

The V8's & V6's & 1.8T's need ALL fan speeds to be working.
(diesels not as vital)

McNeillie · 13th May 2009, 10:18

Get it checked out by an MGR Specialist.

My ZT-T is at Austin Garages www.austingarages.co.uk

I have had several KV6 cars and Nick always sorts out mine.

HGF on the KV6 is comparatively rare compared to the 1.8 models though.

Best of luck

Ian

Jules · 13th May 2009, 10:19

It's in the best of hands there Ian

12th May 2009, 06:44	#12
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,593 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	Morning JP, No manners this lot, to the club, sorry to hear you are having problems. HGF is very inlikely on the KV6 but not unheard of. It would ony fail if severly overheated. This is usually caused by leaking T'stat or a faulty fan. Depending on the age of your car it may have a two or three speed fan. Three speeders are a known weak spot whilst two speeders are very robust once the original resistor is upgraded ( this runs the slow speed) To check the fan, start engine and turn air con to low ( make sure it is not in economy mode) and the fan should run, if it does not then work is reqd on the fan. In your case it is more likely to be stuck stat, water loss or faulty sensor so get the garage to check that side out first, look for water in the V of the engine, thats where the stat lives. Good luck and please keep everone informed __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

12th May 2009, 06:57	#15
Greeners Moderator MG-ZTT Join Date: Mar 2007 Location: Ware, Herts Posts: 19,798 Thanks: 161 Thanked 1,249 Times in 1,036 Posts	Welcome along..as others have said, thermostat, fan and header cap are more common then head gaskets on the V6. Not doubting the competency of the garage, but unless they are Rover experienced, they may miss diagnose HGF as "they all do that sir", which is untrue on the v6. __________________ *David* Impecunity is the mother of ingenuity Useful how to's for common problems Car Of The Month Jan 2014 [SatNav Power Down] [Coolant Level] [SatNav Repair] [Diesel Non Starting] [Paint Codes] [Rear Light Seals] [Reversing Light Switch] [Bleeding Brakes][Sunroof Drain] [Early ZT's][Instrument Pack Diagnostics][ATC Diagnostics]

12th May 2009, 23:04	#18
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Hi Paul Like Dave (Stocktake) & others say, could be cooling fan or lack of ! If Temp Gauge read that Hot, you would have (should have) heard the sound of an Aircraft (cooling fan on full speed). The V8's & V6's & 1.8T's need ALL fan speeds to be working. (diesels not as vital) __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

13th May 2009, 10:18	#19
McNeillie Avid contributor MG ZT V8 (Sadly Gone),MG ZT 190+; tro LHD, LHD Bulgarian Maestro Join Date: Jan 2008 Location: Sutton Coldfield Posts: 122 Thanks: 8 Thanked 0 Times in 0 Posts	KV6 Expert Get it checked out by an MGR Specialist. My ZT-T is at Austin Garages www.austingarages.co.uk I have had several KV6 cars and Nick always sorts out mine. HGF on the KV6 is comparatively rare compared to the 1.8 models though. Best of luck Ian

13th May 2009, 10:19	#20
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	It's in the best of hands there Ian __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

12th May 2009, 06:42	#11
jpwilliams Newbie MG ZT190+ Join Date: May 2009 Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	Not sure now Phil. Garage has car.

12th May 2009, 06:45	#13
jpwilliams Newbie MG ZT190+ Join Date: May 2009 Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	Kaiser Cooling levels fine just HOT according to garage

12th May 2009, 06:48	#14
jpwilliams Newbie MG ZT190+ Join Date: May 2009 Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks for the welcome Dave! Will speak with MGR garage guys this morning about your advice & ......well we'll see! Paul

12th May 2009, 08:11	#16
Zeb Banned MGZT V8 & ZTT 190+LPG Join Date: Nov 2006 Posts: 8,089 Thanks: 0 Thanked 0 Times in 0 Posts	It could simply be a failing header tank cap?

12th May 2009, 09:55	#17
kaiser This is my second home 75 Tourer 2.5 Auto, 1.8T, 75V8ZT Join Date: Jun 2007 Location: Johannesburg ZA Posts: 6,200 Thanks: 1 Thanked 859 Times in 613 Posts	If your cooling level is fine, then you have a problem with the fan not coming on correctly, or a thermostat which is stuck close. However garages being what they are, verify you water every day, don't trust the gauge and check for leaks in any case, mainly in the V, thermostat housing, on the RH side, water pump and in front, where there is a couple of long hoses. If fan, temperature should be normal on open road, too high in town. If thermostat, trouble all the time. And I can't resist this one. Take a Disprin and phone me in the morning! Added: an outside chance that the temperature sensor is faulty is possible.