Dog rough idle

[Evilgoat]

After all the fun and games getting her back on the road Rabbit's idle is now dog rough, feels like I'm sat in an old 200TDI landie (ducks for cover)

It almost sounds like 1/2 cylinders arent firing. Timing is bang on, no vac/evhaust leaks, comression is good in all 4 cylinders. Runs perfectly once its off idle its silky smooth, pulls well, no missing or hesitation. Shen its in fast idle as it warms up its fine too.

I'm thinking carb might be out of adjustment or just plain rooted :(

Any ideas?

[Whatmot]

have you got the original carb in it? if so, take it out, throw it away and replace it with either a nikki, webber or an su

[Evilgoat]

Original carb but its not the same unit as the SJs use.

 I really dont have the time, money or inclination to start messing about with the carbs :) Specially as my snorkel setup and evrything around it (breathers etc) will need to be altered too. Rather the OEM worked right again.

[Whatmot]

yeah but the vitara carbs are bad aswell. as far as i know, the nikki and webber carbs are straight replacements, the nikki is better for offroading because the webber stalls on hills and sharp bumps. the su carb will need an adaptor, but are a really simple carb and can be fine tuned fairly easily.

[Whatmot]

this should work on your vit too (someone correct me if im wrong)

http://forums.mud-club.com/viewtopic.php?t=40821

[wheelspinner]

The nikki for an SJ is not a straight replacement for a vit it would need re jetting as the mixture would be too lean at the top end......then you get pinking and its good bye engine.As the jets for Nikkis are found about as often as hens teeth you may want to think of another option Su or a webber (suffers on steep inclines).

Regards

Steve

[generation-x]

the jetting wud be wrong for richards vit
rich u have checked plugs,leads,cap and rotor arm?
simon

[Evilgoat]

the jetting wud be wrong for richards vit
rich u have checked plugs,leads,cap and rotor arm?
simon

All brand new, though I have a suspicion about the hall receiver in the dizzy, might try swap it.

[deepndirtyvitara]

Mine was the same, It idle like crap!!!  I replaced the main vacuum hose and now she runs like a dream - It's worth checking if you havn't already

[Evilgoat]

All hoses replaced (one down the back of the carb against the engine is an ars@ to get at :)

No differnce, just gonna live with it for now.

[Evilgoat]

Got it!

On the plains yesterday she got a through dunking, and the center lead got contaminated at the dizzy. Took it off abd gave it a good wipe, some IPA and a clean and now she idles more or less perfectly. Thought I'd checked that but must have been some condensate in there.

Gonne make use of some kit I have kicking about to out a pressurised cap setup on it, that way it can still breathe and be water tight.

[Whatmot]

brought another vitara today, the idle was a bit off so i thought i would swap the ht leads over to a spare set i have (apparently 'high performace' ones). anyway, the idle seemed a lot smoother than it was, even when the car was cold

[Evilgoat]

brought another vitara today, the idle was a bit off so i thought i would swap the ht leads over to a spare set i have (apparently 'high performace' ones). anyway, the idle seemed a lot smoother than it was, even when the car was cold

She seems really happy now, even better since I now have the dizzy pressurised to 5PSI so its getting a flow of clean and importantly, dry air, to keep the crud and condensation out.