MG ZT 190 running problems, any advice?
Discussion
Had my 2004 ZT for a while now but I have never been happy with the performance. The top half of the rev range is full of flat spots and the car is hesitant to accelerate.
Low down seems ok with a definite pull at around 3000rpm when the power vis opens. I recently replaced the balance vis and whilst the upper rev range has improved slightly there are still flat spots and once the revs reach 6000 rpm the car appears to hit a brick wall and really refuses to rev higher. Air filter was replaced a few months back and I've tried cleaning the inlet manifold with carb cleaner (though it was pretty clean in there).
My local specialist has taken a look and ran diagnostics but can't find any fault codes. They seem to think it might be the case that the timing is out. Whilst this might be possible, I had the belts changed by an MG specialist six months ago and they have assured me they use the correct MG/Rover cam locking tools so the timing can't be out.
Does anyone have any diy options/troubleshooting suggestions I can try myself to try and find what the problem is?
Thanks
Low down seems ok with a definite pull at around 3000rpm when the power vis opens. I recently replaced the balance vis and whilst the upper rev range has improved slightly there are still flat spots and once the revs reach 6000 rpm the car appears to hit a brick wall and really refuses to rev higher. Air filter was replaced a few months back and I've tried cleaning the inlet manifold with carb cleaner (though it was pretty clean in there).
My local specialist has taken a look and ran diagnostics but can't find any fault codes. They seem to think it might be the case that the timing is out. Whilst this might be possible, I had the belts changed by an MG specialist six months ago and they have assured me they use the correct MG/Rover cam locking tools so the timing can't be out.
Does anyone have any diy options/troubleshooting suggestions I can try myself to try and find what the problem is?
Thanks
If you haven't done so already, join the Rover 75/MGZT forum at
www.the75andztclub.co.uk
Look for Jules or one of the other experts, they'll sort it out for you, never have I found a friendlier one make forum...
www.the75andztclub.co.uk
Look for Jules or one of the other experts, they'll sort it out for you, never have I found a friendlier one make forum...
tdm34 said:
If you haven't done so already, join the Rover 75/MGZT forum at
www.the75andztclub.co.uk
Look for Jules or one of the other experts, they'll sort it out for you, never have I found a friendlier one make forum...
Already have, thought I'd 'carpet bomb' all forums www.the75andztclub.co.uk
Look for Jules or one of the other experts, they'll sort it out for you, never have I found a friendlier one make forum...
St John Smythe said:
They were changed about a year ago by the previous owner. Could it be they aren't gapped correctly or do you not need to do that anymore?
Normally you don't have to gap new plugs these days. I only ask as the ones on the rear bank are a bit of a pain in the arse for access so some owners just don't bother changing them.Gassing Station | MG | Top of Page | What's New | My Stuff