Misfire on number 3 cylinder- changed plugs leads, checked coilpack, injectors.

[DominicJeans]

..what should I try next?

Cheers all.


ps, 165,000 miles and counting (hopefully if this is not too serious).

 

[dano17439]

Get a diagnostic check to see what fault codes it throws up?

 

[DominicJeans]

all it says is something like 'misfire on number 3 cylinder'....according to the bloke I took it too to get it checked.

 

[S-Fell-89]

check compressions if no.3 has no compression then its head off to investigate.

 

[DominicJeans]

yes, sorry, I should have said.. the misfire is intermittent...it comes and goes, but it is mostly misfiring. It's just around 20% of the time that it isn't misfiring.

 

[jjames]

mine was the injector module

 

[S-Fell-89]

still check the compressions. Could be low rather than none existent.

All an engine needs is spark, fuel and compression. If you have them all then try check the timing.

 

[DominicJeans]

yes, thanks folks.. I did think that it was an injector as I have had the exact same thing happen before. Due to time factors (and personal skill deficiency), I have given it to someone else to look at. I guess he should have the same thinking and check the compression next.

 

[DominicJeans]

oh yes, and the engine management light flashes intermittently too, although not necessarily at the same time as the misfire happens.

 

[.GAZ.]

Injector.

 

[DominicJeans]

thanks Gaz.

 

[Craig.]

The same thing happened to our 182 about 2weeks ago, management light kept flickering on & off but the car ran fine then one day it started misfiring, plugged the rs tuner in & it was injector #3 at fault, changed it over & its spot on now, runs loads better & the lights stayed off.

 

[DominicJeans]

Thanks Craig; appreciate the response.

The same thing happened to our 182 about 2weeks ago, management light kept flickering on & off but the car ran fine then one day it started misfiring, plugged the rs tuner in & it was injector #3 at fault, changed it over & its spot on now, runs loads better & the lights stayed off.

 

[Gibbo4k]

I had a similar thing on mine and couldn't find anything wrong with 3 but plug 2 looked wet . Then I was told that number 1 is gearbox end not cambelt end as the scanner said num 3 missfire I thought the machine was wrong untill I was told this. Changed the injector and problem solved. Then thought sod it and replaced all the injectors for new. Just encase

 

[DominicJeans]

Yeah.... I am wondering if the garage's fault code reader has been misinterpreted. It seemed like quite a generic/old reader.

I had a similar thing on mine and couldn't find anything wrong with 3 but plug 2 looked wet . Then I was told that number 1 is gearbox end not cambelt end as the scanner said num 3 missfire I thought the machine was wrong untill I was told this. Changed the injector and problem solved. Then thought sod it and replaced all the injectors for new. Just encase

 

[jon_r]

Worth checking the wiring to the injector as well at the same time.

 

[DominicJeans]

Compression is steady, apparently---It's a little down, but not badly enough to cause the misfire.

 

[Sean6545]

They do know that number 3 cylinder in counted from the flywheel end right?

 

[DominicJeans]

Yeah, I mentioned that to them after reading that somewhere on the forum. In truth, I am not sure the guy I took it to had a lot of time/inclination to look very deeply at the issue. I have got it back now and am going to take it to someone different. It's definitely not something I can personally deal with very effectively now. I may have to start looking at ads for Ignis Sports

They do know that number 3 cylinder in counted from the flywheel end right?

 

[DominicJeans]

....and now it's only firing on two cylinders- I think!