4th Cylinder Dead

[Mighty tas rolla]

hi people i have a kind big issue the 4th cylinder don't seem to be pulling its own weight. i have checked that there is spark and there is. if you look at the bottom of the plug it has a few brown marks but other than that its brand new?? looking at the others they are all brown all the plugs are almost new PLEASE HELP :-(

[78_7kRolla]

Define 'pulling it's weight' more info needed mate. is she running like a chicken with it's head cut off? What seems to be the matter?

 

 

EDIT: 100th post!! YAY :party:

Edited September 5, 2007 by 78_7kRolla

[KE30_KE35_KE55]

hi people i have a kind big issue the 4th cylinder don't seem to be pulling its own weight. i have checked that there is spark and there is. if you look at the bottom of the plug it has a few brown marks but other than that its brand new?? looking at the others they are all brown all the plugs are almost new PLEASE HELP :-(

 

 

 

1 swap over spark plug with a good cylinder and test again that the same cylinder is still dead.

 

2 Check compresion using a compresion gauge avaliable at any parts store

 

3 Check compresions of cylinders either side. all should be even and above 130 psi

 

if compresion is ok check valve clearances, bent pushrods and manifold leaks.

Edited September 5, 2007 by KE30_KE35_KE55