m411as Posted September 7, 2010 Report Share Posted September 7, 2010 my golf mk4 1.6 is mis firing something not right. sound like bag of hammers. i've tried new plugs and leads and still not cured. i've took leads off individually to see which one isn't firing and its 1/A. anyone any idea of what to try next before i get compression test done. coil pack maybe??? Link to comment Share on other sites More sharing options...
cruiser647 Posted September 7, 2010 Report Share Posted September 7, 2010 Hi! Could be the coil pack - swap it over and see what happens. Good luck! Link to comment Share on other sites More sharing options...
m411as Posted September 7, 2010 Author Report Share Posted September 7, 2010 just had another look and when i take ignition lead off spark plug 1 the end of the lead sparks which to me indicates coil pack seems okay. its a single unit as well so would affect all cylinders i'd imagine not just 1. Link to comment Share on other sites More sharing options...
m411as Posted September 7, 2010 Author Report Share Posted September 7, 2010 driving me nuts!!!! arrrrgh! Link to comment Share on other sites More sharing options...
cruiser647 Posted September 8, 2010 Report Share Posted September 8, 2010 Don't believe it. Coil packs are funny things. I'd still swap them if poss and check. Link to comment Share on other sites More sharing options...
burble Posted September 8, 2010 Report Share Posted September 8, 2010 just had another look and when i take ignition lead off spark plug 1 the end of the lead sparks which to me indicates coil pack seems okay. its a single unit as well so would affect all cylinders i'd imagine not just 1. What lead? If you mean the lead running to the top of the block then the coil pack is underneath that - it's actually the coil pack that the lead clips into. Link to comment Share on other sites More sharing options...
m411as Posted September 8, 2010 Author Report Share Posted September 8, 2010 (edited) not coil pack. knew it wasn't changed it today and still runs like tractor. only mis fires in low revs. checked all breather pipes and one was split so repaired it and still the same. cleaned throttle body, still the same, had compression test on the cylinder that seems to be not firing and its fine. i'll never buy another petrol vw. i've got a passat tdi with 150k on it and runs like brand new. golf is absolute pig!!! Edited September 8, 2010 by m411as missed something Link to comment Share on other sites More sharing options...
m411as Posted September 8, 2010 Author Report Share Posted September 8, 2010 the lead i mean is the ht lead that attaches from socket A on coil pack and goes onto spark plug 1. you can take lead completely off and still runs the same. Link to comment Share on other sites More sharing options...
m411as Posted September 15, 2010 Author Report Share Posted September 15, 2010 had injector seals changed and still runs like pile. think head gasket might be blown. would that make it run very lumoy on idle tick over??? appreciate your help! Link to comment Share on other sites More sharing options...
cruiser647 Posted September 15, 2010 Report Share Posted September 15, 2010 Head gasket gone. Hmmm. To check, you need to look at the coolant - see if there is any oily film on it. And check the oil cap to see if there is 'mayonnaise' under it. Also, your coollant level should drop. Lots of white steam from the exhaust at any time too. That's a few things - there are other things to check. But I am not sure what else they are. What is it like at start-up from cold? Could be a vacuum issue? Link to comment Share on other sites More sharing options...
mb Posted September 15, 2010 Report Share Posted September 15, 2010 Head gasket gone. Hmmm.To check, you need to look at the coolant - see if there is any oily film on it. And check the oil cap to see if there is 'mayonnaise' under it. Also, your coollant level should drop. Lots of white steam from the exhaust at any time too. That's a few things - there are other things to check. But I am not sure what else they are. What is it like at start-up from cold? Could be a vacuum issue? Whilst that is a good indication, the gasket could be leaking into the cylinder not into the waterjacket so if no mayo is still possible is the head gasket... I would still favour the coilpacks from past experience of VWs - whilst swapping is a good test, I would favour trying a brand new coil pack or ideally 4 new coilpacks - you would be suprised how badly they can make the car run ? Link to comment Share on other sites More sharing options...
swordfish1985 Posted September 15, 2010 Report Share Posted September 15, 2010 had injector seals changed and still runs like pile. think head gasket might be blown. would that make it run very lumoy on idle tick over???appreciate your help! this would of shown up on the compression test? Link to comment Share on other sites More sharing options...
m411as Posted October 15, 2010 Author Report Share Posted October 15, 2010 head gasket was gone, which was making it run on 3 cylinders due to loss of compression. sold the piece of s*!t and wouldn't have another vw petrol. cheers though mate Link to comment Share on other sites More sharing options...
cruiser647 Posted October 15, 2010 Report Share Posted October 15, 2010 Oh well, thanks for letting us know. What did you get instead? Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now