hi if its been standing for some time i would change the plugs and filters
i had a compressor version i bought which was standing for a year and had the exact same problem
i now have a brand new jetforce compressor had it 1 day and the back wheel locked up the final drive and something snapped in the clutc area so peugeot are looking into it and im getting my money back as its there fault not mine!
good luck
46s46
April 2009