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Further information. I carried out a compression test on the vehicle and found the compression on cylinder 1 to be down. The car is now in a local garage getting the head taken off. I'm hoping its a valve not seating properly!

Hi i have noticed an inch long crack in the exhaust (outlet) manifold, that wouldn't be the problem would it? ta

hi my corsa runs lumpy on tick over (hot and cold). Runs better when the revs are increase to 2500 and above. Fault codes are P0300 - random mulfiple misfire, Also showing codes P0301 - P0304, misfire cylinder 1-4. I've replace the plugs and coil pack but its just the same. Next Ive...

hi what was wrong with your car? how did you narrow the problem down to the idle control valve? my corsa runs lumpy on tick over (hot and cold). Runs better when the revs are increase to 2500 and above. Fault codes are P0300 - random mulfiple misfire, Also showing codes P0301 - P0304...