help please 2.0 misfiring

[magiczig]

hi all i have a old n reg laguna 2.0 estate its a volvo engine
its misfiring on 2 & 3 AA SAID it was coil pack put a new one on its the same so put all new leads on and its the same any idea what the problem might be
thanks

[JamesV70R]

Check the plugs are clean and gapped properly.

Try swapping the coil packs from 2+3 to 1+4 and vice-versa - see if the issue moves.

You say the AA bod said the issue was a coil pack, but then also say that the leads were changed .. Which leads?

[magiczig]

thanks will try that i put 4 brand new ht leads on that lead from the coil packs to the plugs

[deathrider311271]

thanks will try that i put 4 brand new ht leads on that lead from the coil packs to the plugs

That does not make any sense at all, coil packs dont have HT leads, certainly not on volvo engines, another thing is i thought the 2.0 laguna engine was from Peugeot/Citroen.

[magiczig]

hi all thanks for trying to help me next to were the plug holes are on top is says volvo i have 2 coil packs on it the left one is connected to 2&3 and the right one is connected to 1&4 the coil pack are working if i move 1 and 4 leads into 2&3 it wont start when i put them back it starts but 2&3 are not working please help lol i dont have a clue and carnt afford a garage this is my last hope

[deathrider311271]

Right so u have 2 coils not coil packs, physically move the wireing from coil that runs 1+4 to the one that runs 2+3 should just be plugged in, and see if the problem moves to cylinders 1+4 if it does the chances are its the coil knackered

[magiczig]

Just swaped them over and the car wont start at all , when i swap them back the car starts but 2 and 3 not working lol

[deathrider311271]

just swaped what over exactly?

[magiczig]

when i swap the wireing from the right hand coil black plug to the left hand coil white plug the car wont start but if i swap the leads 1 and 4 over 2 the left hand one now with the black plug in it starts if i swap the black plug back to the correct right hand one and put leads 1 and 4 back over to this one it starts but still no 2 and 3 i hope you see what i mean

[deathrider311271]

when i swap the wireing from the right hand coil black plug to the left hand coil white plug the car wont start but if i swap the leads 1 and 4 over 2 the left hand one now with the black plug in it starts if i swap the black plug back to the correct right hand one and put leads 1 and 4 back over to this one it starts but still no 2 and 3 i hope you see what i mean

so that tells me the coil is working, so therefore there is either a problem with the wireing to the coil, a fuse has blown or a relay problem.
The test u have done is correct as the black plug will only power 1+4 cylinder, there will be a problem on the white plug system somewhere that wireing powers cylinders 2+3

[magiczig]

the thing is when i take the lead off 2 or 3 and put a spare spark plug on there is a spark there someone else had said maby the valves have blown in 2 and 3 please tell me this is unlikely thanks

[deathrider311271]

in that case is there fuel getting to cylinders 2+3? if yes then i would suggest a compression test

[magiczig]

there is a strong smell of petrol

[deathrider311271]

in that case have u got a petrol leak at the injectors?

[magiczig]

i don't think the petrol is leaking.

[deathrider311271]

compression test it is then

[magiczig]

dose this mean the valves might have gone
thanks

[deathrider311271]

unfortunatly yes its a possibility