my cossy started running on 3 cylinders today, number 2 is down, the rest is fine,, i have tried new plugs,leads,cap,rota arm, there is power going to the injector, tried different injectors, and tried the ecu, done a compression test and thats all fine reading 140 on number 2.
i am stuck with things to change, any help would be great,
can someone help me?

 

Wot did the car do when it stared to run on 3 had you over rev,ed it ? or is there just no spark in number 2 when you put a plug in the HT lead and put it on the rocker cover and run the motor

 

no i was sittin at 60mph then i tried to put the foot down in 5 and it started running lumpy then on 3, wen i put a plug in the lead and sit on the rocker cover it sparks,
i am confused,

 

how do you no its number 2 that is down

 

when the car is runnin i pulled each plug lead off and number 2 doesnt do anything when it is off and the other 3 make the car seem like its going to cut out,

 

is your crank pully clean and is the crank senser set right and HT leads are new new

 

thats spot on

 

what are the other 3 readings?? check the inlet manifold gasket hasn't blown.

 

the other 3 are all about 140 too 145, i will check the inlet gasket today, anyone got anymore ideas??

thanks,

 

Have you checked the ground for injector number 2? Injectors are switched earth so it may have power but that means nothing if it's an earth problem.

Martin

 

i'd be checking injectors in all honesty, just unplug them one at a time, with your findings No.2 will make no difference, then give apower supply to the injector and listen if it's clicking, likely it's either the wiring or the injector itself.
maybe just swap injectors round and then you'll know if it's wiring.

 

In original post he says that already tried different injectors with no change m8?

o yea what Cossie is it?

 

if it was blown it would just rev up as it would be using the air from the leak to run the motor

 

NOT always m8

 

did you find out what the outcome on this was?