View Full Version : weird miss fire...willy3
andywilliams
05-11-2006, 23:21
Just a very quick question,
I have a really strange kinda miss-fire... it only happens occasionally and is normally when I am doing 1 of 2 things...
holding revs...around 3.5k-4k... its almost like the engine cuts out and cuts back in really fast...
the other time it happens is when im accelerating, in 3rd and 4th...at 4-5k+
I am thinking change plugs etc, im also getting a new chip (dno if this could effect)...has anyone else had this problem..?
Admitidly its very occasional, but I would prefer it to be never!
Ideas?
Andy
I get exactly the same problem but at 2k rpm Checked out ICV and sparks/leads/dizzy, wasted £40 on diagnostics. Nothing.
andywilliams
06-11-2006, 14:05
no i haven't now you mention it... this a likely cause you think?
cheers
andy
given that its at high revs or when holding it at highish revs yeah, does it do it if you old it at 5-6k revs
andywilliams
06-11-2006, 17:57
has never done it when "holding" at high revs...i.e. 4th gear on the motorway is fine....(but tbh i dont really do an awful lot of motorway driving and i dont tend to hold it at 5-6 round town lol)
it only appears to do it...when settled at around 3-4k
or when hard accel in 3rd/4th... up higher in the revs..
First i'd check/replace the HT leeds, plugs dizzy etc, then swap fuel filter then check the fuel pump (shoudl pump a certain amoutn out ijna certain amoutn of time, then replace coil pack
Always start with the cheapest/easiest thing to do
andywilliams
06-11-2006, 18:37
First i'd check/replace the HT leeds, plugs dizzy etc, then swap fuel filter then check the fuel pump (shoudl pump a certain amoutn out ijna certain amoutn of time, then replace coil pack
Always start with the cheapest/easiest thing to do
- HT's new
- I'll replace plugs asap
- Then Dizzy
- Just had a new fuel filter (note its been better after this)
- I'll see how much a new pump is...
Thanks very much for your help
Andy
If its been better after a new filter i'd say that defo points towards fuel pump, could try replacing teh filter again, if crap got backed up, for teh sake of a tenner or so......and if that don't make any difference you have a spare then
martinjw_dton
10-11-2006, 13:35
i had a similar problem i just bought my valver and it was misfiring check the ignition plugs
Powered by vBulletin® Version 4.2.5 Copyright © 2024 vBulletin Solutions Inc. All rights reserved.