Hi, I have a J reg golf mrk2 8 valve, i can get it to start and she idles at the usual revs but wont rev up unless left running with the throttle open for a good 10 or 15 mins, then as soon as you let off the throttle it dies back to idle revs again and no response from the throttle. Oh and this happened over night, it rained extremely heavily, then i used a little wd 40 which always used to do the trick ! Ive changed the plugs, distro cap, rotor arm, fuel filter, air filter but no change. please help !!!! cheers Dan