Juddering/Hessitance

[Bass J]

Hi Folks ...i just fitted a Forge FMIC to my clio gtt. When in say 5th gear cruising at 30mph the car jerks ..becomes hessitant untill i put my foot down.

Is this possible due to fuelling?

The carb is on standard jets and the boost is standard 8psi aswell. Anything i can do to sort it?

Cheers

[yrrab nostaw]

would say yes its down to fuelling but tbh if you are in 5th and try and get any sort of descent accelaration then it would more than likely stutter.

[ScottGT]

Did you clean out the FMIC before you fitted it Bob?

What does it run like on boost?

Try getting it to a garage and carefully running an airline through it?

[Bass J]

Yeah i cleaned it. On boost its fine ...just a tad laggy ..but i can deal with that

[Bass J]

Has anyone any idea's? ...i drove it on the motorway last nite at 60mph in 5th gear it judders untill im on boost then its fine ...its kinda annoying as i dont wanna drive flat out everywhere

[Gymnast]

Does it happen in all gears? Have you checked the dizzy cap/rotor. Take it off, clean it out with some carb cleaner.

I had a similar issue where it would judder on gentle throttle, then would be fine with more load ... cleaned the dizzy and worked fine after that

[Bass J]

hmm may give that a try ...its a new distributor tho ..so i recon it should be clean enough .

Just called a well respected tunning company up my way called "the garage performance & tunning" ...they will setup my carb and boost for £65 with a wideband controller So im booking it in ..in a few weeks when money allows