Mitsubishi Colt 5-door 2004 onwards - Misfire jumps cylinders despite new coil & plugs!

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Fri 24 Aug 2012 23:06
Mitsubishi Colt 5-door 2004 onwards - Misfire jumps cylinders despite new coil & plugs! - MondeoMonkeyMagic

The Colt has FMSH. It has 72K and due a service at 75K

1 week ago wife drives to work (as usual), engine mgt light comes on, she pulls overs and calls me, I tell her to come home and take my car to work.

I take the Colt to local garage (Mitsubishi garage 30 miles away & didn't know how serious problem was) who plugged in diagnostic computer and they confirm intermittant misfire on cylinder 2.

They replace coil pack with OE one.

2 days later - same thing happens, same place too, just 2 miles into journey up steepish bank but car is fully up to temperature on both occassions.

Wife comes home and swaps cars again

This time garage change all 3 spark plugs with new OE NGK. Couple days later, engine mgt light comes on again, only this time, it is in cylinder 1 !

I am stuck, how does a misfire jump from cylinder 2 to cylinder 1 even after new coil pack fitted to cylinder 2 and 3 new plugs are fitted?

Any ideas please

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Sat 25 Aug 2012 03:08
Mitsubishi Colt 5-door 2004 onwards - Misfire jumps cylinders despite new coil & plugs! - 1litregolfeater

You should get more codes than just a misfire, replace garage before wasting more money.

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Sun 17 Feb 2013 22:12
Mitsubishi Colt 5-door 2004 onwards - Misfire jumps cylinders despite new coil & plugs! - MondeoMonkeyMagic

A note to update for the benefit of the forum, found out what the problem was, burnt out exhaust valves as a result of the LPG system fitted (at a cost of £1750 I hasten to add).

Note to all potential LPG buyers gievn the recent rise in petrol costs - DON'T BOTHER WITH LPG - it is false economy. Just as HJ warns against complex TDi engines with DPF, DMF etc etc, LPG needs its own healthwarning. Fitted in Nov 2010, I haven't even broke even with the system cost yet despite the alleged mpg improvement and I now have a rather expensive engine repair bill to boot.

Found this on the internet whilst trying to research how common this problem was

www.amrautos.co.uk/index.php/lpg-systems

Oh happy days........

Edited by MondeoMonkeyMagic on 17/02/2013 at 22:13

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Mon 18 Feb 2013 08:45
Mitsubishi Colt 5-door 2004 onwards - Misfire jumps cylinders despite new coil & plugs! - Collos25

Although no lover of LPG many Colts without this system fitted have suffered exactly the same fault Achilles heel of the 3 cylinder Mitsubishi engine.

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