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[JDX]

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.

[amba]

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.

[Alnico Blue]

2-4-6  coil pack on way out  . . .got some  used ones here if you want to try a swap first before buying one 

[JDX]

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.

[JDX]

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.

[Doctor Gollum]

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

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

[Alnico Blue]

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 ?

[JDX]

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....

[JDX]

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....

[amba]

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

[Alnico Blue]

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

Exactly what I was thinking

[Alnico Blue]

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" 

[JDX]

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" 

Thanks...I will, haven't spoken with him for ages, you're right he's only up the road from me.

[terry paget]

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.

[Migv6 le Frog Fan]

Did I hear my name being taken in vain.  …………………………...
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.