URGENT 172 Misfire help needed!!!

[Daniel]

Got a W plate 172. Developed a misfire.

I have just replaced the Coil pack, Leads and Plugs and it is still doing it.

I have had one lead off at a time trying to determine which cylinder is at fault, but each time I crank it over after removing a lead, it refuses to start. Doesn't matter which lead.

HELP!!

 

[Russ_16v]

is it missing or constantly on 3 cylinders mate?

 

[lee131]

remove each lead while its running then

 

[Tony Hunter]

Spark plug ?

happened to me.

 

[Riley!]

spark plug, temp sender, sounds more likely to be mass air flow sender (side of plenum) or TDC sensor (under air box)

 

[SBV116]

Injector? had a couple randomly fail on 172's!

 

[SEAN172]

Pre cat lambda sensor maybe

 

[Jay Payne]

ashtray full of loose change?

 

[Tunst]

ashtray full of loose change?

:lolup:

Find some1 with a diagnostics scanner, that may/may not tell you the problem

 

[Daniel]

Thanks to lemonnobby its sorted!!!

Massive thanks mate. Was a dodgy set of non-gen leads. After a bit of ''modification'' they're good as new!

Cheers mate

 

[JR]

Thought you were out on the hammer tonight ?

 

[SBV116]

Bloody hell daniel!

 

[Daniel]

Thought you were out on the hammer tonight ?

I was. Didn't go out until 9 though. Can't go out too early as I drink too much then! lol.

Bloody hell daniel!

??