Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: John_Clayton on 06 January 2009, 18:27:45

Title: Engine misses when accelerating
Post by: John_Clayton on 06 January 2009, 18:27:45

My 2.5 V6 has started missing during acceleration. It results in a sort of hesitation which is very unpleasant. Once up to speed, however, it's all fine. The plugs are fairly new and I can't detect any vacuum leaks in the throttle body, inlet manifold or associated hoses. The only other possibility the Haynes manual lists is an Engine Management System fault. Any suggestions would be most welcome before I pay to have it professionally diagnosed.

Title: Re: Engine misses when accelerating
Post by: ngrainqey on 06 January 2009, 18:30:11

it could be your dispack on the way out (it misses under load) but i'd check your plug wells for oil!

Title: Re: Engine misses when accelerating
Post by: HGV mechanic on 06 January 2009, 18:37:08

start with the easier option, - plugs and leads, had similar problem, new leads sorted it :y

at the same time check plug wells for oil, if so then you need new cam cover gaskets

Title: Re: Engine misses when accelerating
Post by: ngrainqey on 06 January 2009, 18:42:51

Quote

start with the easier option, - plugs and leads, had similar problem, new leads sorted it :y

at the same time check plug wells for oil, if so then you need new cam cover gaskets

.....and breathers cleaned

Title: Re: Engine misses when accelerating
Post by: Elite Pete on 06 January 2009, 20:00:41

Do a paperclip test ;)
http://www.omegaowners.com/forum/YaBB.pl?num=1189022687

Title: Re: Engine misses when accelerating
Post by: Marks DTM Calib on 06 January 2009, 21:22:15

Brittle leads are the normal culprit.....also clean the plug insulators to.