Regarding juddering, I'd start with checking the level of the CS Speed fluid level, if ok get the system bled incase it has an air lock - this is dealer only unless you have access to a registered version of MultiECUscan.net software (which is defo worth the money)
the car has been stood for abit so i will def check it. Thanks. N the smoke goes after abit it hasnt been over heatin or anythin leakin wen ive checked. Thanks for your help. Just 1 more thing whats the best spark plugs to fit in it ?
Spark plugs I'm not 100% sure on, NGK are original spec and what I use in all my Fiats, don't bother with iridium costly ones, standard ones changed regularly will be better
And if it has been standing a long time (how long are we talking?) my money is on air in the hydraulic system. A good bleed should sort it.
about a month its had a couple ov drives up the rd just to keep battery goin. Water was low which i topped back up n oil was ok. Midlands Nr Birmingham