engine misfire

[mxi933]

Not that its really causing too much of a problem but I noticed today that when I give it some welly - accellerating up to 5k revs ish - the engine misfires slightly. It seems to do it if I try to pull away without changing down as well. it runs fine at low revs

A search suggests ht leads/coil packs.

its a 4.2 - anybody suggest where I should look first

cheers

[Mr Freefall]

mxi933 said:

Not that its really causing too much of a problem but I noticed today that when I give it some welly - accellerating up to 5k revs ish - the engine misfires slightly. It seems to do it if I try to pull away without changing down as well. it runs fine at low revs

A search suggests ht leads/coil packs.

its a 4.2 - anybody suggest where I should look first

cheers

Check for loose HT leads to the plugs.

Mr F

[thegreengoblet]

Have and had a similar problem.

Was fixed for 2 weeks after a coil change but has reappeared.
I suspect it's the other coil.
Check your HT Leads are seated on the plugs and coil packs first.
My +ve on my battery was loose. Could cause issues I guess under hard acceleration with current being drawn??
If not then maybe it's one of your coil packs.