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Author Topic: misfire  (Read 1124 times)

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guyvaux

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misfire
« on: 15 May 2010, 13:36:29 »
I have a general misfire on my 3.0 V6. Seems to be worse on kickdown or in sport mode. any ideas?
thanks in advance
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tunnie

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Re: misfire
« Reply #1 on: 15 May 2010, 13:39:36 »
take plug leads out, any oil in there?
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guyvaux

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Re: misfire
« Reply #2 on: 15 May 2010, 14:49:24 »
Just checked them all....oil free!
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tunnie

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Re: misfire
« Reply #3 on: 15 May 2010, 14:51:43 »
couple of things to try:

1) unplug the MAF sensor, does that help?
2) Age / miles of plugs?
3) Do a paperclip test  :y
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guyvaux

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Re: misfire
« Reply #4 on: 15 May 2010, 15:00:38 »
Quote
couple of things to try:

1) unplug the MAF sensor, does that help?
2) Age / miles of plugs?
3) Do a paperclip test  :y

Going to try that now...will let you know asap...
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guyvaux

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Re: misfire
« Reply #5 on: 15 May 2010, 15:12:04 »
Quote
Quote
couple of things to try:

1) unplug the MAF sensor, does that help?
2) Age / miles of plugs?
3) Do a paperclip test  :y

Going to try that now...will let you know asap...

Got the codes 73 and 13
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tunnie

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Re: misfire
« Reply #6 on: 15 May 2010, 15:15:34 »
Quote
Quote
Quote
couple of things to try:

1) unplug the MAF sensor, does that help?
2) Age / miles of plugs?
3) Do a paperclip test  :y

Going to try that now...will let you know asap...

Got the codes 73 and 13

73 is MAF, was it unplugged when you did the test? If not unplug it now and take it for a spin
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guyvaux

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Re: misfire
« Reply #7 on: 15 May 2010, 15:17:11 »
Unplugged MAF and it ran worse.
Plugged it back in to do test.
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guyvaux

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Re: misfire
« Reply #8 on: 15 May 2010, 15:29:59 »
Quote
Quote
Quote
Quote
couple of things to try:

1) unplug the MAF sensor, does that help?
2) Age / miles of plugs?
3) Do a paperclip test  :y

Going to try that now...will let you know asap...

Got the codes 73 and 13

73 is MAF, was it unplugged when you did the test? If not unplug it now and take it for a spin

Unplugged MAF and took for a spin - misfire a lot worse...
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Varche

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Re: misfire
« Reply #9 on: 15 May 2010, 15:33:07 »
Hi. I have got my spark plugs out at the moment hunting down my misfire. Very similar sounding to yours but mine goes after 4 miles or so.

A few years back, I had something very similar and after changing the plugs and leads it was still there and it turned out to be the DIS pack down the back of the engine.   
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guyvaux

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Re: misfire
« Reply #10 on: 15 May 2010, 15:37:19 »
Quote
Hi. I have got my spark plugs out at the moment hunting down my misfire. Very similar sounding to yours but mine goes after 4 miles or so.

A few years back, I had something very similar and after changing the plugs and leads it was still there and it turned out to be the DIS pack down the back of the engine.   

Mine stays all the time. Did only start today though. Hoping it is not the DIS pack! Mainly happens when pulling off quickly or using kickdown.
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guyvaux

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Re: misfire
« Reply #11 on: 22 May 2010, 15:17:52 »
Still no improvement. Seems worse in this hotter weather though....Any ideas?  :-/
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guyvaux

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Re: misfire
« Reply #12 on: 25 May 2010, 23:56:30 »
Going to change plugs when I get chance, see if that helps.
Any other ideas/theories welcome!
Thanks
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