just changed leads,extenders and plugs

[jammygit]

boy does it run a lot better. just a few observations though which i'd like to throw out:

some of the old plug extenders were very loose, also after a couple of drives with the new ones installed a couple had worked their way a bit loose as well. is this right? surely you need a good connection. what's the secret here? a bit of blue tack? (joke!!)

the old plugs that were removed had a gap you could drive a lorry through. i adjusted the new to 40 - what difference does the gap make?

car runs a lot better (fitted magnecor leads as well) but it is very lumpy particularly on tickover - the revometer is bouncing! is the reason to do with tuning etc now that new plugs etc have been fitted? tickover was really smooth with the old plugs. i have booked in for a rolling road session next week.

seeking expert explanations ...................

[trefor]

Can't remember what the plug gaps should be, but 40 thou sounds too much. I think RPIs website tells you somewhere. COULD be the reason for lumpy running (not strong enough spark?)

T/.

[jammygit]

thanks T, however the old plugs removed had HUGE gaps and was ticking over more smoothly. Having said that there is no reduction in performance etc - just an observation.

[2 Sheds]

Your not miles out 35 thou is correct

[ssbell]

Don't know anything about Chims, but have had similar experience recently with my S2. Changing the HT Leads helped quite a bit - and they needed pushing on more than one to get a good fit, too - but the big difference cmae with cleaning out the air inlet valve which gets a bit grimy. I just sprayed loads of WD40 in there and jiggled the tiny piston around till it felt freer and I'm back to wonderful smooth motoring, even at dead slow speeds!