Nissan Sunny 2003

corton, May 24, 10:22am
My old Sunny is starting to miss on one and sometimes two cylinders, only when under load. Do any of you knowledgeable ladies and gents have any suggestions about possible reasons for this? Thank you.

monaro17, May 24, 10:36am
Spark plugs, or more likely a coil or two

tygertung, May 24, 10:42am
Try changing the spark plugs. Does it have a distributor or separate coil packs?

kazbanz, May 24, 10:51am
Have you washed under the bonnet recently?
possible causes with one of those
1) water down the spark plug holes from washing
2) the rocker cover seals are weeping letting oil run down into the spark plug holes.
3) plugs are needing to be replaced
4)the coils in the cylinders concerned are dud

bigfatmat1, May 24, 4:46pm
Spark plugs, coil(s) if it's a dd engine injectors fail.

corton, Aug 3, 10:53pm
Thank you all; good suggestions. I'll start by getting the ignition bits checked.