vauxhall cavalier 1.8lsi not firering on number4 pot (cylinder)?

try changing the plug, if that dont work try changing the lead after making sure it is secured to the plug and distributer,if that does,nt work try another distributer cap making sure that all the leads are put back in the same order they came off.

clive
April 2007

Is fuel getting into cylinder ? see if plug gets wet with ht lead disconnected from it. Could be weakening fuel pump or injector blockage.

Pete
March 2007