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Author Topic: Misfire....logical next step?  (Read 913 times)

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JDX

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Misfire....logical next step?
« on: 29 December 2018, 17:45:11 »

V6 2.6 auto
So, I have replaced all the spark plugs. I have removed the plenum & as per the great guide supplied by Fuse 19, I have dismantled, cleaned using carb cleaner all the bits, throttle etc & it's all back.
No improvement in the miss fire, eml remains on & via pedal trick I have codes 0300, 0304, 0302 & 1110.
I have checked all the cables & pipes & as far as I can tell all seems good.
What would you advise I try next?
If I take the car to someone with a code reader will it provide more specific information?
Thanks.
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amba

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Re: Misfire....logical next step?
« Reply #1 on: 29 December 2018, 17:50:12 »

Worth checking you are getting a good spark at each plug as you could have the signs of a failing coilpack.

The rubber boots tend to perish if the plug wells have had a soaking in oil from a leaking camcover gasket so you maybe loosing some of the spark to the inside of the plug chamber at not going direct to the plug.
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Alnico Blue

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Re: Misfire....logical next step?
« Reply #2 on: 29 December 2018, 17:50:51 »

2-4-6  coil pack on way out  . . .got some  used ones here if you want to try a swap first before buying one  ;)
« Last Edit: 29 December 2018, 17:53:01 by Alnico Blue »
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JDX

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Re: Misfire....logical next step?
« Reply #3 on: 29 December 2018, 17:56:24 »

OK thanks.
When I changed the plugs the spark plug holes were full of water on that side, so maybe that started the problem. I have since sealed the scuttle so hopefully it wont happen again.
I will have ago at checking the sparks on that side tomorrow in the daylight.
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JDX

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Re: Misfire....logical next step?
« Reply #4 on: 29 December 2018, 17:58:52 »

2-4-6  coil pack on way out  . . .got some  used ones here if you want to try a swap first before buying one  ;)
Thanks for the offer, I will see what I can find in the morning before I drive over but that may really help.
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Doctor Gollum

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Re: Misfire....logical next step?
« Reply #5 on: 29 December 2018, 18:01:00 »

Did you happen to notice the condition of the coil pack?

Can pretty much guarantee corrosion and minor cracking of the casing...
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Alnico Blue

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Re: Misfire....logical next step?
« Reply #6 on: 29 December 2018, 18:03:32 »

2-4-6  coil pack on way out  . . .got some  used ones here if you want to try a swap first before buying one  ;)
Thanks for the offer, I will see what I can find in the morning before I drive over but that may really help.

where in North Essex are you ?
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JDX

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Re: Misfire....logical next step?
« Reply #7 on: 29 December 2018, 18:06:43 »

Did you happen to notice the condition of the coil pack?

Can pretty much guarantee corrosion and minor cracking of the casing...
There was minor cracking yes....
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JDX

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Re: Misfire....logical next step?
« Reply #8 on: 29 December 2018, 18:07:14 »

2-4-6  coil pack on way out  . . .got some  used ones here if you want to try a swap first before buying one  ;)
Thanks for the offer, I will see what I can find in the morning before I drive over but that may really help.

where in North Essex are you ?
I'm in Halstead....
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amba

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Re: Misfire....logical next step?
« Reply #9 on: 29 December 2018, 18:08:51 »

Bet moisture has got into that coilpack and started the demise .
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Alnico Blue

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Re: Misfire....logical next step?
« Reply #10 on: 29 December 2018, 18:18:28 »

Bet moisture has got into that coilpack and started the demise .

Exactly what I was thinking
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Alnico Blue

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Re: Misfire....logical next step?
« Reply #11 on: 29 December 2018, 18:28:02 »

2-4-6  coil pack on way out  . . .got some  used ones here if you want to try a swap first before buying one  ;)
Thanks for the offer, I will see what I can find in the morning before I drive over but that may really help.

where in North Essex are you ?
I'm in Halstead....

Migv6  is the nearest to you as I recall . . . usually a very helpful chap to us fellow oofers . . .so  might be worth a PM to him as  he might have a 2-4-6 pack knocking about for test  purposes  :-\

When he reads this he may post up  . . or tell us to "Far Cough"  ;D ;D ;D
« Last Edit: 29 December 2018, 18:34:38 by Alnico Blue »
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JDX

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Re: Misfire....logical next step?
« Reply #12 on: 29 December 2018, 18:50:15 »

2-4-6  coil pack on way out  . . .got some  used ones here if you want to try a swap first before buying one  ;)
Thanks for the offer, I will see what I can find in the morning before I drive over but that may really help.

where in North Essex are you ?
I'm in Halstead....

Migv6  is the nearest to you as I recall . . . usually a very helpful chap to us fellow oofers . . .so  might be worth a PM to him as  he might have a 2-4-6 pack knocking about for test  purposes  :-\

When he reads this he may post up  . . or tell us to "Far Cough"  ;D ;D ;D
Thanks...I will, haven't spoken with him for ages, you're right he's only up the road from me.
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terry paget

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Re: Misfire....logical next step?
« Reply #13 on: 29 December 2018, 21:39:15 »

OK thanks.
When I changed the plugs the spark plug holes were full of water on that side, so maybe that started the problem. I have since sealed the scuttle so hopefully it wont happen again.
I will have ago at checking the sparks on that side tomorrow in the daylight.
Water in no. 6 from leak in the scuttle will cause a misfire. It doesn't often get into 4 and 2, but oil does from a leaking cam cover gasket.
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Re: Misfire....logical next step?
« Reply #14 on: 29 December 2018, 23:10:12 »

Did I hear my name being taken in vain.  >:(... ;D
Unfortunately I don't have one. Had to buy a new one for my own car not long after I bought it. Iirc it cost about 90.
Mr Alnico - if its easier for you, drop one off to me at work and I will take it to JDX. I reckon that would save you about 40 miles on the return journey. :y
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