K series problem MG TF - Page 5

mbonwick · 23rd October 2019, 15:17

I would say it's unlikely to be sticking valves. Mine did it off the bat with a brand new cylinder head.

It will feel like it spins over faster when it has stalled - it will be so drowned at that point that it takes a few turns to even try and come to life.

pletevl · 23rd October 2019, 15:24

I'm clutching at straws now trying to find out what is playing up.
But sticking valves did get me thinking, they would heat up and expand quicker than the valve guides.

kaiser · 23rd October 2019, 15:38

I have not followed this thread in detail. But if I was you, I would contact MarinaBrian. He is a cantankerous old man, but if anyone can solve your problem, he can.!

I sent him a computer box from South Africa. He fixed it and sent it back, good as new.!

Sometimes you just bite the sour apple and go to the guy who knows what to do.
( Although I hate to admit it!

)

pletevl · 23rd October 2019, 16:00

I would, believe me I would, but I'm in France ��
He did give his opinion at the start of this thread but has never been back since.

kaiser · 23rd October 2019, 16:03

I know you are!!!
I am in South Africa!!!

I know he is not good at answering emails!
But get hold of him and he will sort your computer, for sure! If that is not the fault, I would try all sensors.

WillyHeckaslike · 23rd October 2019, 22:32

Quote:

Originally Posted by pletevl

Thinking about it, when it stalls and I go to restart it, the engines does crank over as though there is no compression !!! spins fast

Might be something might be nothing. If it were to be something I would be thinking about the engine oil ... is it within spec and the service requirement? I have had problems of stuck valves with incorrect engine oil that I knowingly used with the intention of short-term use as a flushing oil and on another occasion using the correct but cheap own-brand supermarket engine oil which failed to last the distance to the recommended service change - I was advised by the garage who fixed it at the time that it was a known problem to them of cheap oil and it advised to use good quality. However the symptom on both of those occasions was no start due to lack of compression.

The wiring in the area of the throttle body ... underneath it where the multi-plug is ... is prone to rubbing and wearing away. I found this on my Rover 25 with one of the coil-pack cables which had worn through to the inner conductors. I covered the damage with some tape but it made no noticeable difference to the running of the car. Maybe I was lucky and caught it in time but I think that it might be worth investigating nonetheless.

pletevl · 24th October 2019, 08:34

The car is serviced at the correct intervals with high quality 5w40 mobil engine oil.
It's not wiring loom problem either as I have a T4 and all sensors are being read correctly.

I have just ordered brand new:
coolant temp sensor
MAP sensor
plugs
coil packs
HT leads

It starts on a flick of the switch, runs beautifully for 30 odd seconds and then starts to smell rich from the exhaust and the engine tickover drops to about 900 and starts playing up.

mbonwick · 24th October 2019, 13:42

Have you thought of replacing the throttle position sensor? It's about the only thing I can think of that you've not tried yet.

pletevl · 24th October 2019, 16:22

I haven't no, because T4 is telling me it's OK.

mbonwick · 1st November 2019, 20:30

Any joy with that list of replacement parts Pete? I haven't had time to dig into the live data from mine, hopefully will in the next few weeks.

23rd October 2019, 15:38	#43
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	I have not followed this thread in detail. But if I was you, I would contact MarinaBrian. He is a cantankerous old man, but if anyone can solve your problem, he can.! I sent him a computer box from South Africa. He fixed it and sent it back, good as new.! Sometimes you just bite the sour apple and go to the guy who knows what to do. ( Although I hate to admit it!) __________________ Worth his V8 in gold

23rd October 2019, 16:03	#45
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	I know you are!!! I am in South Africa!!! I know he is not good at answering emails! But get hold of him and he will sort your computer, for sure! If that is not the fault, I would try all sensors. __________________ Worth his V8 in gold

23rd October 2019, 15:17	#41
mbonwick Gets stuck in Connoisseur SE 1.8 Auto Saloon Join Date: Jul 2015 Location: Kendal Posts: 633 Thanks: 129 Thanked 176 Times in 147 Posts	I would say it's unlikely to be sticking valves. Mine did it off the bat with a brand new cylinder head. It will feel like it spins over faster when it has stalled - it will be so drowned at that point that it takes a few turns to even try and come to life.

23rd October 2019, 15:24	#42
pletevl Posted a thing or two rover 75 cdti(rhd), MG ZR(lhd), MG TF(lhd), MG TF(rhd), mini mpi (lhd), Renault megane III (awful) Join Date: Mar 2014 Location: East of France Posts: 1,282 Thanks: 124 Thanked 114 Times in 93 Posts	I'm clutching at straws now trying to find out what is playing up. But sticking valves did get me thinking, they would heat up and expand quicker than the valve guides.

23rd October 2019, 16:00	#44
pletevl Posted a thing or two rover 75 cdti(rhd), MG ZR(lhd), MG TF(lhd), MG TF(rhd), mini mpi (lhd), Renault megane III (awful) Join Date: Mar 2014 Location: East of France Posts: 1,282 Thanks: 124 Thanked 114 Times in 93 Posts	I would, believe me I would, but I'm in France �� He did give his opinion at the start of this thread but has never been back since.

24th October 2019, 08:34	#47
pletevl Posted a thing or two rover 75 cdti(rhd), MG ZR(lhd), MG TF(lhd), MG TF(rhd), mini mpi (lhd), Renault megane III (awful) Join Date: Mar 2014 Location: East of France Posts: 1,282 Thanks: 124 Thanked 114 Times in 93 Posts	The car is serviced at the correct intervals with high quality 5w40 mobil engine oil. It's not wiring loom problem either as I have a T4 and all sensors are being read correctly. I have just ordered brand new: coolant temp sensor MAP sensor plugs coil packs HT leads It starts on a flick of the switch, runs beautifully for 30 odd seconds and then starts to smell rich from the exhaust and the engine tickover drops to about 900 and starts playing up.

24th October 2019, 13:42	#48
mbonwick Gets stuck in Connoisseur SE 1.8 Auto Saloon Join Date: Jul 2015 Location: Kendal Posts: 633 Thanks: 129 Thanked 176 Times in 147 Posts	Have you thought of replacing the throttle position sensor? It's about the only thing I can think of that you've not tried yet.

24th October 2019, 16:22	#49
pletevl Posted a thing or two rover 75 cdti(rhd), MG ZR(lhd), MG TF(lhd), MG TF(rhd), mini mpi (lhd), Renault megane III (awful) Join Date: Mar 2014 Location: East of France Posts: 1,282 Thanks: 124 Thanked 114 Times in 93 Posts	I haven't no, because T4 is telling me it's OK.

1st November 2019, 20:30	#50
mbonwick Gets stuck in Connoisseur SE 1.8 Auto Saloon Join Date: Jul 2015 Location: Kendal Posts: 633 Thanks: 129 Thanked 176 Times in 147 Posts	Any joy with that list of replacement parts Pete? I haven't had time to dig into the live data from mine, hopefully will in the next few weeks.