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Author Topic: Could misfire be a fuel issue?  (Read 1228 times)

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woolley11

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Could misfire be a fuel issue?
« on: 18 November 2014, 20:34:30 »

Just wondered if a misfire on my 3.0 pfl could be fuel related.

Have changed coil pack (new Bosch) - thinking of changing plugs and HT leads but before I go to the time and expense just wondered if it could be fuel filter or something related.  :-\

« Last Edit: 18 November 2014, 20:43:21 by woolley11 »
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VXL V6

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Re: Could misfire be a fuel
« Reply #1 on: 18 November 2014, 20:39:35 »

Usually oil in the plug well(s)
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dbug

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Re: Could misfire be a fuel
« Reply #2 on: 19 November 2014, 01:08:18 »

Usually oil in the plug well(s)

If you're swapping plugs/HT leads you should notice oil in plug well(s) ;)  Means your cam cover gaskets gone and probably breathers blocked ;)
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zirk

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Re: Could misfire be a fuel issue?
« Reply #3 on: 19 November 2014, 01:20:00 »

I would agree with the above before messing with Fuel related items on a 3.0.

Oil / water in plug wells, spark plugs, leads, diss pack all in that order.
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05omegav6

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Re: Could misfire be a fuel issue?
« Reply #4 on: 19 November 2014, 01:29:29 »

Codes first :y

An electrical misfire should leave a trace... is the eml on?

And no mention of wet dis pack, which given the weather of late... ::)
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dbug

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Re: Could misfire be a fuel issue?
« Reply #5 on: 20 November 2014, 00:49:43 »

Codes first :y

An electrical misfire should leave a trace... is the eml on?

And no mention of wet dis pack, which given the weather of late... ::)

Not on a 3.0 pfl V6 - no codes for ignition related failures ;)
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05omegav6

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Re: Could misfire be a fuel issue?
« Reply #6 on: 20 November 2014, 06:53:21 »

Well that's a bit crap... ::)
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woolley11

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Re: Could misfire be a fuel issue?
« Reply #7 on: 21 November 2014, 08:16:12 »

Thanks guys - no elm light on.

Mostly hiccuping/missing but sometimes it drives fine - I think I'll start with ht leads then and may as well swap plugs at same time - it's coming upto 100k and I think they are the original ht leads as I pulled one of and it's a "Beru" manuf 1999.  ???
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woolley11

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Re: Could misfire be a fuel issue?
« Reply #8 on: 21 November 2014, 08:18:17 »

Thanks guys - no elm light on.

Mostly hiccuping/missing but sometimes it drives fine - I think I'll start with ht leads then and may as well swap plugs at same time - it's coming upto 100k and I think they are the original ht leads as I pulled one of and it's a "Beru" manuf 1999.  ???
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