MGTF 160 Engine misfire issues.... advice please!
Discussion
My OH has a 2004 MGTF 160. ill give you some background so as to make it easy as poss,
About 6months to a year ago she was complaining of juddering, this turned out to be a misfire, took it to our local Ex MG mechanic who changed both coil packs and adjusted the timing. Its been fine since.
Now in the last month or so the misfire has returned. The conditions are below 2.5K revs under acceleration. once its going it tends to be better.
My first port of call was going to be the leads. I read on the internet also someone had the same problem on an earlier car and it was a dizzy cap and arm they replaced, but then that the later cars dont have that?? is that true?
I havent really worked on MG's very much, is it all under that panel behind the roof?? i was told just take up the carpet and there are a few screws to undo.
Im handy with spanners but dont want to get to involved tbh, any trustworthy garages in the newbury area??
Thanks in advance, Graham
About 6months to a year ago she was complaining of juddering, this turned out to be a misfire, took it to our local Ex MG mechanic who changed both coil packs and adjusted the timing. Its been fine since.
Now in the last month or so the misfire has returned. The conditions are below 2.5K revs under acceleration. once its going it tends to be better.
My first port of call was going to be the leads. I read on the internet also someone had the same problem on an earlier car and it was a dizzy cap and arm they replaced, but then that the later cars dont have that?? is that true?
I havent really worked on MG's very much, is it all under that panel behind the roof?? i was told just take up the carpet and there are a few screws to undo.
Im handy with spanners but dont want to get to involved tbh, any trustworthy garages in the newbury area??
Thanks in advance, Graham
Had the same problem not long ago - previous owner had fitted aftermarket HT leads which had broken down and were arcing. Swapped them out and problem solved. I took it to a garage but having since seen someone else get into the engine in about 2 minutes I'd probably give it a go myself next time.
Have a look here: www.mgf-tf-central.co.uk for some helpful links.
Failing that, www.mgroversolutions.com will come to you and is well recommended
Have a look here: www.mgf-tf-central.co.uk for some helpful links.
Failing that, www.mgroversolutions.com will come to you and is well recommended
MDG123 said:
Had the same problem not long ago - previous owner had fitted aftermarket HT leads which had broken down and were arcing. Swapped them out and problem solved. I took it to a garage but having since seen someone else get into the engine in about 2 minutes I'd probably give it a go myself next time.
Have a look here: www.mgf-tf-central.co.uk for some helpful links.
Failing that, www.mgroversolutions.com will come to you and is well recommended
thanks, thinking of getting into a garage tomorrow or friday, its on original leads and now at 80k... so wouldnt put it past the leads breaking down... think ill just get them to change anyway... how much were they?? £30??Have a look here: www.mgf-tf-central.co.uk for some helpful links.
Failing that, www.mgroversolutions.com will come to you and is well recommended
Hi the rotor arm has a diode in it which breaks down over time and can casue missfire. try head mechanics at www.-head-mecahnics.co.uk There recommended mg repairers. do quiet a bit of work on my car. highly recommend
EG6mad said:
Hi the rotor arm has a diode in it which breaks down over time and can casue missfire. try head mechanics at www.-head-mecahnics.co.uk There recommended mg repairers. do quiet a bit of work on my car. highly recommend
TF's used wasted spark ignition, so they don’t have a distributor or rotor arm 
My wife has an MGTF 160 and we had similar misfire issues. The coil packs were the obvious culprit but although one was very loose this did not sort the problem. The fault code just indicated a misfire so no help there! Our local MG Rover garage (now Honda) had it in and found the lambda sensor was the problem.New one fitted no misfire. As the car makes a round trip of only 6 miles each day I initially feared head gasket but we use no water at all, probably due to good antifreeze and always idling for a few minutes after a long journey. Steven
HomeFix said:
My wife has an MGTF 160 and we had similar misfire issues. The coil packs were the obvious culprit but although one was very loose this did not sort the problem. The fault code just indicated a misfire so no help there! Our local MG Rover garage (now Honda) had it in and found the lambda sensor was the problem.New one fitted no misfire. As the car makes a round trip of only 6 miles each day I initially feared head gasket but we use no water at all, probably due to good antifreeze and always idling for a few minutes after a long journey. Steven
Thats exactly what happend to my ZR 160, luckily ive got a code scanner and it pointed me to he pre cat o2 sensor, got a shock at the price of the bloody things though as I didnt want to fit a generic one and went for OEM.Gassing Station | MG | Top of Page | What's New | My Stuff