Vitara spluttering problem

[dave_a]

Hi Guys

I have a 1994 g16b vitara, It runs mint but when cruising along at say 50k in 5th gear if I am not accelerating and not letting it engine brake just keeping a constant speed it judders, Has anyone had this or know what would be causing it?. But runs absolutely mint otherwise

[Heath]

faulty spark plug lead/dizzy or plug. I guess the leads.

[dave_a]

had new leads rotor and cap about 20 thou kms ago, and new plugs about 150 kms ago, ill replace cap and rotor and leads and hopefuly that should fix it

[Rotazuk]

I doubt there is many suzukis out there that will pull 50 kph in 5th gear smoothly . It usually indicates an ignition breakdown issue as Heath has pointed at . But if its ok at say 70kph and above its fine . Just drive it

Chris

[Heath]

Maybe some moisture repelant also?

[Weemsy]

is it definately a mis-fire, or could it be a 'judder'??

with you saying 50k's in 5th and with no 'load' on the engine, could it be your engine mounts etc?? had this kind of fault before where a guy replaced 100's of bucks worth of ignition stuff, flushed the fuel system etc and then i found the engine mount was loose. tightened it up again - problem cured

just a different idea before spending a fortune

weemsy