2 cylinders

[Shelly]

I had to take my Z back to the garage today
As when I first start the car up it shudders for a few minutes in 1st and 2nd gear
It was put on the diagnostic machine again
It came back that only 2 cylinder were working
So it's going back on Tuesday to be put on a compressor machine
Hope they find out what the problem is

 

[mrscalex]

If my memory serves me right your garage looked at your diagnostics previously and dismissed something that some of us didn't like the look of?

If it's something serious or some lasting damage has been done I would remind them of the fact they glossed over it.

 

[Shelly]

I've got both papers for the diagnostic test
Hope it isn't anything serious

 

[Paul Rice]

Fingers crossed!

 

[Shelly]

Thank you @Paul Rice
What a worry

 

[oldcarman]

Don't panic till you get the final decision Shelly!! It may not be as serious as your mind is making it out to be!! I hope it turns out to be an inexpensive fix. Hope you and Alan are well!! JIM

 

[Shelly]

Thank you @ oldcarman
I am a worrier, I worry over the smallest little things
Take care Jim
Hope your ok

 

[mrscalex]

They will be doing a compression test on each cylinder. If the compression is low you most likely have a mechanical failure within the engine. It seems a bit over the top to go straight for that before looking for an ignition problem.

I wouldn’t worry yet. I suspect their knowledge is mechanical/first principal based and their powers of deduction/application of logic are not too hot. They would be working off the error codes rather than plugging in a compression tester otherwise.

To the best of my knowledge the DME only ever reports a misfire and not a ‘physically dead’ cylinder.

Statistically, the chances are they’ll be saying the compression test is fine and they’ll have to look for an ignition fault.

I think you’d be unlucky if it was a mechanical failure. But I wouldn’t wish to get your hopes up too much by suggesting it couldn’t possibly be.

 

[Shelly]

Thank you @mrscalex
Will see what Tuesday brings

 

[oldcarman]

Relax and enjoy your weekend @ Shelly nothing you personally can do now anyway! It's out of your hands!! JIM xxx

 

[Bozzy]

Fingers crossed for you Shelley, most likely something electrical.

 

[Shelly]

Thank you @oldcarman and @Bozzy
Will let you know what happens

 

[Tracy Dee]

Hope it's not serous and a simple fix.

 

[Shelly]

Thank you @Tracy Dee

 

[bessieblue]

Did you have the head gasket replaced by them a while ago

 

[Shelly]

Did you have the head gasket replaced by them a while ago

No , haven't had the head gasket replaced Pete

 

[Shelly]

My Z went back to the garage yesterday
It had a compression test
It came back that the fuel and air weren't going through at the right times so that's why my Z is jumping a lot when it first starts off
The garage has ordered me my part from BMW which will be here Friday
So it's going back next Tuesday hopefully the problem will be sorted