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Puma 1.7 Problem

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Old Oct 15, 2011 | 10:39 PM
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Default Puma 1.7 Problem

Hi Guys,

My 1.7 has a missfire at idle but drives okay otherwise?
Possible problems?

Should have a video up tomorrow


Thanks
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Old Oct 15, 2011 | 10:46 PM
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Id start by cleaning the MAF and a set of new plugs, while your there check the rocker cover gasket isnt leaking
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Old Oct 16, 2011 | 03:57 PM
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Originally Posted by alexno1dj
Id start by cleaning the MAF and a set of new plugs, while your there check the rocker cover gasket isnt leaking
Cheers, sounds more internal... But will do that, I'll post a video in a while of it running.
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Old Oct 16, 2011 | 06:47 PM
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that would definatley be my first port of call, then if it is still miss firing you have dealt with the most common probs first
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Old Oct 16, 2011 | 06:58 PM
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Originally Posted by alexno1dj
that would definatley be my first port of call, then if it is still miss firing you have dealt with the most common probs first
Just started it for the first time in a while there, and it's not as bad as I thought.

I'll put up the video in a min.... It clears after 3k revs.
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Old Oct 16, 2011 | 07:23 PM
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yeah i think what ive suggested should sort it mate
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Old Oct 16, 2011 | 08:38 PM
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http://www.youtube.com/watch?v=vghnqWFrxmo
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Old Oct 19, 2011 | 06:44 PM
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Right checked plugs and MAF..... Still the same...


Anything else to try? I'v another engine hear so can swap over bits
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Old Oct 19, 2011 | 06:50 PM
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Originally Posted by RB26DETT
Right checked plugs and MAF..... Still the same...


Anything else to try? I'v another engine hear so can swap over bits
what about the coil pack? take the one from your other engine and swap it over.
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Old Oct 19, 2011 | 07:38 PM
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Originally Posted by alexno1dj
what about the coil pack? take the one from your other engine and swap it over.
Already tryed a coil pack... But I took it off my 1.4 Puma, was still the same.


It has to be simple as the car still drives perfect
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Old Oct 19, 2011 | 07:51 PM
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Have you got a maf to try? I know you've cleaned it, but got to be worth a switch if donor is available. They are very common to fail. On the hot-wire.

Matt
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Old Oct 19, 2011 | 08:58 PM
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I'd guess the Idle Control Valve.



It fits diamond kinda shape where those two little holes are on the inlet.
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Old Oct 19, 2011 | 09:28 PM
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i had one that did the same, tried loads of things, ended up puttin new leads and plugs on and it was sorted
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Old Oct 19, 2011 | 09:31 PM
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Originally Posted by mk1turboestate
i had one that did the same, tried loads of things, ended up puttin new leads and plugs on and it was sorted
that's usually the problem when they do this.
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Old Oct 20, 2011 | 03:20 PM
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Have swapped in another MAF.
Have swapped in another Idle Control Valve.

Will just try leads and plugs (I think I already tried it, but sure what harm)

Thanks for the help guys.
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