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General => The garage => Topic started by: bundy on 26 February 2008, 18:55
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ive just been given a mk2 gti 8v theres no smoke from it or anything but its only running on 2 or 3 cylinders. ive cleaned all the plugs and ive got a spark going through each lead, havn't tested the compression in each cylinder yet. if anyones got any idea of what it could be please let me know.
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Make sure the plugs are connected the right way, (in the correct firing order) If you muddle them up somtimes it will run but only on 2/3 cylinders!! Pops and backfired are a common give away.
Check that first because i have done it many times!
It will be somthing like 1-3-4-2 So find out where number 1 is on the dizzy cap and ensure the ones that follow it connect as shown.
On the distributor Spark plugs
Plug1 ---> Cylinder 1
Plug2 ---> Cylinder 3
Plug3 ---> Cylinder 4
Plug4 ---> Cylinder 2
Sorry if you already knew that, best to make it clear the first tiem just incase you dont know about the firing order :wink:
By the way, if you look down on the top of your distributor, number 1, is TOP RIGHT
2 1
O
4 3
Like that ^^^
And if that doesnt work, you need a compression test :smiley:
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nice one thank ya, i just took for granted the bloke that gave me the car had them in he right order i think that 1 and 4 are the wrong way round on it.
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Nice easy fix if it is! :wink:
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well, i checked and checked again and they wer ein the right order, took the plugs out of the barrels that werent running and put a bit of oil down to see if that helped and after a very loud bang!!it was still the same so its compression testing time!if that fails new head!