M400 camshaft timing positions

[gbk]

My m400 is currently only running on one bank of 3 cylinders. Trying to rule out as many possibilities as possible as I am in IOM and to trailer the car to a Noble dealer / repair shop would be very expensive.

Does anyone know the timing positions for each camshaft x 4 and crankshaft position @ top dead centre.

Any help/ suggestions gratefully received.

Barry

[GTO400]

Could be Lambda sensor for the bank not running.
Kevin

[gbk]

Hi Kevin

Lamda sensor is ok.
ECU appears ok.

Thanks for the thought.

Barry

[Adrian W]

how did the fault develop, ie put it away fine and wouldnt start etc



Thinking about it, there arent any parts that could do that because of the firing order, can only think of fuel rail, seriously flooded or cam followers, id take the plugs out first, the racecar broke a follower so lost oil pressure on that bank, stopping the others from lifting properly.

Edited by Adrian W on Thursday 2nd October 14:41

[gbk]

Hi Adrian

No obvious cause. Started running a bit rough on start up but when warm appeared ok. Only realised problem when tried full throttle and car misfired.

Garage then identified that one bank was cold after leaving on tickover for 5 mins.

Cheers

Barry

[Adrian W]

sorry was editing when you posted, check above

[gbk]

Hi Adrian

Thanks for that and I have passed to garage.

Cheers

Barry

[Jim O.]

This should help:

http://www.pistonheads.co.uk/xforums/topic.asp?h=0...

[gbk]

Jim

Many thanks

Barry

[RobP]

Barry - sorry to hear your cars not behaving. Hope you get it fixed in time for Anglesey at the end of the month. Mine's been away since we returned from Spa, but hopefully it will be all done by Monday/Tuesday of next week.

[gbk]

Hi Rob

Thanks for sympathy. I know you have had more than your fair share of problems recently.

I am coming to Anglesey with or without Noble!!

Cheers

Barry

[gbk]

Many thanks for the responses. I also posted on US Noble Forum and Paul Wilson had same problem recently and posted info.

http://www.nobleforums.com/showthread.php?p=36137#...

Hopefully no collateral damage.

Barry

[Adrian W]

having read that, the tensioner must have gone soft,

[D_G]

The comment about having the engine turn backwards due to rolling back in gear is interesting, there may be something in the cam chain tension design that backs it off which can make it jump on start up. Certainly worth keeping in the back of your mind if you leave the car in gear.

Good luck Barry.

Dave

Edited by D_G on Thursday 2nd October 21:14