[Mk2] [NA] Rough idle

Anything and everything to do with mechanical issues with your Mk2

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MR2Kyle
Posts: 211
Joined: Tue Mar 05, 2013 3:53 pm
Location: Auchterarder, Scotland

[Mk2] [NA] Rough idle

Post by MR2Kyle »

Getting rather tired of this now...hot or cold there is a misfire at idle every second or two...totally random timeing so I don't think it's a constant miss on a clyinder if you catch my drift. I've replaced the plugs, leads, rotor arm, dizzy cap, and the coil and I still have this issue....my patience is wearing thin as the mechanic I go to seem to be taking the p1$$ a bit...anyhow any help would be appreciated!
Thanks in advance :thumleft:
Ryan S
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Re: [Mk2] [NA] Rough idle

Post by Ryan S »

any fault codes?
mr2garageswindon
Posts: 282
Joined: Wed Oct 15, 2014 3:02 pm

Re: [Mk2] [NA] Rough idle

Post by mr2garageswindon »

Can you stick some spark plug jumpers on top of the plugs and see when it appears again if you can see which one isn't lighting up?
Could also be an injector fault...
chrismit
Posts: 68
Joined: Mon Apr 13, 2015 8:04 am
Location: Leeds

Re: [Mk2] [NA] Rough idle

Post by chrismit »

any other symptoms?

i.e a strong smell of fuel or anything like that
caldridge7
Posts: 235
Joined: Tue Sep 22, 2015 5:42 pm
Location: Spalding, linconshire

Re: [Mk2] [NA] Rough idle

Post by caldridge7 »

Something that may have gone unlooked is the spark plug gap and what spark plugs are they, if there the ones with the three electro arms get rid of them.
cooper514
Posts: 98
Joined: Mon Jun 03, 2013 10:46 pm

Re: [Mk2] [NA] Rough idle

Post by cooper514 »

I agree with what the others are saying check for spark on all plugs check the gaps and check for fuel if you pull the main lead off the dizzy and turn it over check to see if you plugs are wet also check simple things like all the leads are clicked on properly I would expect a mechanic to have done this already tho but you never no

Do you have a video of it idling ???
abovetherim
Posts: 594
Joined: Wed Feb 16, 2011 8:49 pm
Location: Leicester

Re: [Mk2] [NA] Rough idle

Post by abovetherim »

Could be leaking injector. I had the same issue on a focus, had me stumped for a day
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