misfiring

miss firing was created by Lancslioness

Posted 11 years 4 months ago #123367
Could anybody please help me out here. When I am driving my MGTF it seems to be missing even when I put my foot down it is holding back and seems like it is going to backfire. Im not sure what can be wrong. Any ideas
by Lancslioness

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Replied by Steve on topic miss firing

Posted 11 years 4 months ago #123368
Worth checking coil pack connections or if you have a spare substitute for a known good one
by Steve
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Replied by John and Sue on topic miss firing

Posted 11 years 4 months ago #123369
If it came on recently and suddenly it could be a tank of dodgy fuel.
On ours, a misfire was cured by new plugs and leads. The fault went away so the coil packs were ok.
There are two packs and two leads: cheaper to inspect/ swap these out first.

It will be all right in the end. If it isn't all right yet, then it is not yet the end..

by John and Sue
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Replied by David Aiketgate on topic miss firing

Posted 11 years 4 months ago #123372
Wot He said.

if it happens when you try to accelerate from low speed, I found the connections under the coilpacks were corroded.:shrug:

David
:shrug:

by David Aiketgate
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Replied by Lancslioness on topic miss firing

Posted 11 years 4 months ago #123375
its happening when I set off at low speed and also when im at speed actually all the time now.
by Lancslioness

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Replied by Lancslioness on topic miss firing

Posted 11 years 4 months ago #123376
do you know anyone near burnley who can sort it out
by Lancslioness

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Replied by John and Sue on topic miss firing

Posted 11 years 4 months ago #123378
Many faults have to be eliminated by substitution: as David A says there is a tendency for crap and corrosion to build up at the plug end of the coil pack and HT lead. If you are changing the plugs then the coil packs have to come out anyway. There is a rubber shroud at the plug end of the pack: ease this off and check and clean the connection.

It will be all right in the end. If it isn't all right yet, then it is not yet the end..

by John and Sue

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Replied by Lancslioness on topic miss firing

Posted 11 years 4 months ago #123379
thank you
by Lancslioness

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Replied by John and Sue on topic miss firing

Posted 11 years 4 months ago #123380

Lancslioness wrote: do you know anyone near burnley who can sort it out


Burnley? BURNLEY?????

That's a step too far! I'm a Yorkshire lad. :yesnod:

Any competent garage should be able to do this: the only difference between a conventional car regards plug, pack and lead change is removing the engine cover: if they're not familiar there are how-to's on here.
It really is a simple job if you know a trustworthy tinkerer. I'm a bit far else I'd help out: someone nearer may be able to help.

It will be all right in the end. If it isn't all right yet, then it is not yet the end..

by John and Sue
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Replied by Lancslioness on topic miss firing

Posted 11 years 4 months ago #123381
Ah ah I guess someone has to live in Burnley
by Lancslioness

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Replied by David Aiketgate on topic miss firing

Posted 11 years 4 months ago #123382
One of the mobile mechanics will be able to sort you out. It will probably cost you less than a garage and you know they are good. I always recommend Russell(www.MGRoversolutions.com) or Jon Norris(Rough Luck Racing)

David
:shrug:

Last Edit:11 years 4 months ago by David Aiketgate
Last edit: 11 years 4 months ago by David Aiketgate.
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Replied by John and Sue on topic miss firing

Posted 11 years 4 months ago #123387
Excellent point David, but it seems that sometimes the MM are fully booked and if its a bad misfire it needs sorting ASAP was my thinking. Another advantage of an MM would be a good diagnosis beforehand I guess.

It will be all right in the end. If it isn't all right yet, then it is not yet the end..

by John and Sue
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