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[J_K]

I got my 2.5 V6 today, delighted with it only one small problem with it.

It has a hesitation/missfire at low revs, seems to struggle, I'd say one cyliner isn't firing as its not as smooth as it should be.  Its not as bad when its cooled down a bit.

Most likely cause? Plugs/leads....

I got a set of plugs on my way home this evening, only place was open was halfords so I now have 8 plugs     How easy/difficult are they to change?  I can see the drivers side bank pretty easily although does the egr (I think??) have to come off, passenger side looks a bit more difficult but I'll get at it somehow...

Plugs and leads are the obvious ones but could it be anything else, it seems to be just affecting a few cylinders though rather than the general running of the car and there's no warning lights up on the dash either which I suppose is a good thing.


Also the metal pipe coming off the egr (I think thats what it is) on the drivers side is very rattely?  Any way of stopping it or is it something that usually happens.

Thanks.  

[rickyboy]

Does the engine management light come on when you turn the ignition onto position 2 (without starting the car)?

[J_K]

Er... Yes.....

That and the battery light, handbrake warning and the oil light...

All the rest go out...

I bet I have a problem don't I?.....  Nothing on when its running though.

[rickyboy]

That's a good thing.  Was suspecting that the bulb had been taken out but it obviously hasn't.  Read "paperclip test" in the maintenance section and give us the codes anyway but it looks like you are looking in the right area.  Ignition system would be the obvious place to start.  Also check for oil in the plug wells.

[J_K]

That's a good thing.  Was suspecting that the bulb had been taken out but it obviously hasn't.  Read "paperclip test" in the maintenance section and give us the codes anyway but it looks like you are looking in the right area.  Ignition system would be the obvious place to start.  Also check for oil in the plug wells.

I was thinking thats what you were thinking alright, I went and checked the manual to see if it should be on so no worries there (I'd have never thought of checking that though....

Oil in the plug well's will be done tomorrow along with the spark plugs.
Will try the paper clip test tomorrow too.

Thanks.

[philhoward]

That's a good thing.  Was suspecting that the bulb had been taken out but it obviously hasn't.  Read "paperclip test" in the maintenance section and give us the codes anyway but it looks like you are looking in the right area.  Ignition system would be the obvious place to start.  Also check for oil in the plug wells.

I was thinking thats what you were thinking alright, I went and checked the manual to see if it should be on so no worries there (I'd have never thought of checking that though....

Oil in the plug well's will be done tomorrow along with the spark plugs.
Will try the paper clip test tomorrow too.

Thanks.

Just me being me...but first time round this as "i'll oil the plug wells tomorrow"...the idea is there shouldn't be any in there!  If there is, then cam cover gaskets need replacing and breathers cleaning out - standard for V6's, i gather..

[J_K]

Oil in the plug well's will be done tomorrow along with the spark plugs.
Will try the paper clip test tomorrow too.

Thanks.

Just me being me...but first time round this as "i'll oil the plug wells tomorrow"...the idea is there shouldn't be any in there!  If there is, then cam cover gaskets need replacing and breathers cleaning out - standard for V6's, i gather..

Allow me to rephrase that, the plug wells will be checked for oil tomorrow while I'm changing the spark plugs  

[tmx]

missfiring ignition faults etc are not recorded by the ecu btw! so if no faults are found then thats why! its usually the dis pack that dies around 100 - 140k is the lifespan of one

[J_K]

missfiring ignition faults etc are not recorded by the ecu btw! so if no faults are found then thats why! its usually the dis pack that dies around 100 - 140k is the lifespan of one

And I'm on 124k so that could also be the problem.

I suppose the best thing to do is start from the plugs and work backwards....

Edit: Paperclip test shows up nothing out of the ordinary.

[ians]

I suggest you follow the breather cleaning guide thoroughly regardless of whether there is oil in the plug wells.  Take the plenum off (good guide for that too) and then change the plugs - access much easier.  (You can also inspect the HBV then for signs of leaks too.)

[PaulW]

watching this thread with interest, as I'm on the same boat as you...

177k miles, hesitant upto 4krpm then gets full power/stops missing...

replaced coilpack, plugs, leads, checked multirams, done allsorts, but still the same...

[J_K]

watching this thread with interest, as I'm on the same boat as you...

177k miles, hesitant upto 4krpm then gets full power/stops missing...

replaced coilpack, plugs, leads, checked multirams, done allsorts, but still the same...

Interesting, mine also seems to be ok at high revs too although I'm not sure what it should be like really....

[PaulW]

Well my old 2.5 pulled through the entire range (had 113k on the clock when I sold it)

this one, its as flat as a pancake upto 4k, and then goes as it should high revs.

[blob]

i have got the same problem which is getting worse it is very lumpy when i start up from cold does the dis pack eventuly fail completley? i have 72000 miles on the clock

[J_K]

Mine seems to get worse as it gets hotter.

Also an awful vibration from it, I can feel the car rocking even when its just ticking over, could it not be firing on all cylinders or would that be more noticable.

Its just confusing me at this stage