ZT Ready for mot, Help needed,

cooper.mg190 · 13th July 2016, 13:32

Hi all,

After all my hard work, the ZT is ready for the MOT,

New Stat, and pipes fitted, along with gaskets, no coolant in the V,

The question,

The car was idling quite rough, and whenever the throttle was applied and released, the car would almost stall.
The battery has been disconnected for a week, while I waited for the parts.
Will this sort itself out once its been run for a while? or am I looking at something more serious?

Vanbursta · 13th July 2016, 14:25

You almost certainly have an air leak, either on one of the manifold gaskets or one of the breather pipes, or maybe even the VIS motors if you disturbed them. Most likely you may of kinked one of the inlet manifold o rings. You didn't accidentally leave a pipe off anywhere?

cooper.mg190 · 13th July 2016, 17:06

Everything is pushed in, and nothing missed, I'll have to take the manifold back off and check to see if any of the Seals/o rings are damaged.

Good thing i've got used to taking the car apart.

Vanbursta · 13th July 2016, 18:28

Just in case you could try just driving the car for a couple of days to see if it settles.

DMGRS · 13th July 2016, 22:44

I had similar - on mine it looks like the seals (the black ones, not the big green O Rings) had gone rather crusty with age, and wouldn't seal correctly.
These are the ones I mean:
KV6 Upper Inlet Manifold Seals

They just in a groove within the manifold.

cooper.mg190 · 14th July 2016, 09:12

I havent had chance to look yet, but know I changed all the seals on the mani about six months ago,

cooper.mg190 · 14th July 2016, 10:06

Just took the manifold off, getting good at it now, ten mins and done

Everything was pushed in properly, double checked all wiring, just in case,
nothing missed or out of place,

The only thing i noticed were the Manifold front Black gaskets, were caked in grease and NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-,
Otherwise all was good,

cooper.mg190 · 19th July 2016, 06:52

Cars in for the MOT today,

Only thing I think it can fail on is the TOW bar electrics,
Other than that all seems well,

Fixed the idle problem aswell, EML came on turned out I hadnt pushed the connector for injector bank 5 home, runs sweet lovely now

13th July 2016, 13:32	#1
cooper.mg190 Avid contributor MG ZT-T+ 190 Join Date: May 2015 Location: Birmingham Posts: 224 Thanks: 5 Thanked 24 Times in 24 Posts	ZT Ready for mot, Help needed, Hi all, After all my hard work, the ZT is ready for the MOT, New Stat, and pipes fitted, along with gaskets, no coolant in the V, The question, The car was idling quite rough, and whenever the throttle was applied and released, the car would almost stall. The battery has been disconnected for a week, while I waited for the parts. Will this sort itself out once its been run for a while? or am I looking at something more serious? __________________ MG ZT-T 190+ Color Code LQW, Currently Being Rebuilt, Slowly but Surely,

13th July 2016, 14:25	#2
Vanbursta Posted a thing or two Rover 75 2.0 V6 Conn Join Date: Apr 2007 Location: Stainton Grove Posts: 1,637 Thanks: 266 Thanked 406 Times in 257 Posts	You almost certainly have an air leak, either on one of the manifold gaskets or one of the breather pipes, or maybe even the VIS motors if you disturbed them. Most likely you may of kinked one of the inlet manifold o rings. You didn't accidentally leave a pipe off anywhere? __________________ I am NOT a number, I am 75 Last edited by Vanbursta; 13th July 2016 at 14:26.. Reason: can't spell for toffee

13th July 2016, 17:06	#3
cooper.mg190 Avid contributor MG ZT-T+ 190 Join Date: May 2015 Location: Birmingham Posts: 224 Thanks: 5 Thanked 24 Times in 24 Posts	Everything is pushed in, and nothing missed, I'll have to take the manifold back off and check to see if any of the Seals/o rings are damaged. Good thing i've got used to taking the car apart. __________________ MG ZT-T 190+ Color Code LQW, Currently Being Rebuilt, Slowly but Surely,

13th July 2016, 18:28	#4
Vanbursta Posted a thing or two Rover 75 2.0 V6 Conn Join Date: Apr 2007 Location: Stainton Grove Posts: 1,637 Thanks: 266 Thanked 406 Times in 257 Posts	Just in case you could try just driving the car for a couple of days to see if it settles. __________________ I am NOT a number, I am 75

13th July 2016, 22:44	#5
DMGRS Discount MG Rover Spares Rover 75 CDTi, 2x MG ZS180 Join Date: Jun 2011 Location: Hythe, Southampton Posts: 11,356 Thanks: 456 Thanked 3,377 Times in 2,027 Posts	I had similar - on mine it looks like the seals (the black ones, not the big green O Rings) had gone rather crusty with age, and wouldn't seal correctly. These are the ones I mean: KV6 Upper Inlet Manifold Seals They just in a groove within the manifold. __________________ Your trusted MG Rover specialist! Tel: 02380 001133 / Email: [email protected] We now have a 'chat' function on our site for even quicker replies. Give it a try! Remember - discount code FORUM5 for 5% off

14th July 2016, 09:12	#6
cooper.mg190 Avid contributor MG ZT-T+ 190 Join Date: May 2015 Location: Birmingham Posts: 224 Thanks: 5 Thanked 24 Times in 24 Posts	I havent had chance to look yet, but know I changed all the seals on the mani about six months ago, __________________ MG ZT-T 190+ Color Code LQW, Currently Being Rebuilt, Slowly but Surely,

14th July 2016, 10:06	#7
cooper.mg190 Avid contributor MG ZT-T+ 190 Join Date: May 2015 Location: Birmingham Posts: 224 Thanks: 5 Thanked 24 Times in 24 Posts	Just took the manifold off, getting good at it now, ten mins and done Everything was pushed in properly, double checked all wiring, just in case, nothing missed or out of place, The only thing i noticed were the Manifold front Black gaskets, were caked in grease and NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-, Otherwise all was good, __________________ MG ZT-T 190+ Color Code LQW, Currently Being Rebuilt, Slowly but Surely, Last edited by cooper.mg190; 14th July 2016 at 10:08..

19th July 2016, 06:52	#8
cooper.mg190 Avid contributor MG ZT-T+ 190 Join Date: May 2015 Location: Birmingham Posts: 224 Thanks: 5 Thanked 24 Times in 24 Posts	Cars in for the MOT today, Only thing I think it can fail on is the TOW bar electrics, Other than that all seems well, Fixed the idle problem aswell, EML came on turned out I hadnt pushed the connector for injector bank 5 home, runs sweet lovely now __________________ MG ZT-T 190+ Color Code LQW, Currently Being Rebuilt, Slowly but Surely,