After a run on the motorway yesterday, my MPi started misfiring, running rough. Getting home I started to diagnose by pulling each plug lead off in turn which showed a weak/no spark on No. 2 & 3 cylinders.
So I bought new leads today which gave a similar result, and it still wouldn't run properly. So I put on another coil pack I have (unknown history) which seemed to give a more even spark across all four cylinders but now it won't run at all!
I've recharged the battery, dryed, cleaned and checked the plugs and still no go. It hiccupped a couple of times but still nothing.
So, anyone got any ideas? Haynes suggests a major mechanical failure e.g. cam drive. I'm pretty sure it's not, but could be wrong I suppose .
Tomorrow I'm planning on getting a new set of plugs (and a set of HD jump leads to attach to a big diesel vehicle) 'cause I can't think of anything else!
I should maybe add, it's got a big valve head, running about 11:1 CR, BPR7ES plugs.
Thanks in advance!
Graham
Edited by Cooper1999, 16 December 2009 - 09:49 PM.