Rudaz Posted June 22, 2011 Report Share Posted June 22, 2011 As per title. Got a really bad missfire and vagcom says cylinder 3. So far I have changed plugs leads and bought a new coil pack and also a new injector and it's still crap. Light comes on the dash every now and again but goes off after a short while. Any ideas? It's proper doing my sweed in! Thanks danny Quote Link to comment Share on other sites More sharing options...
Widelupo Posted June 22, 2011 Report Share Posted June 22, 2011 Checked if your rocker cover is leaking. Have u got oil on top of ur spark plugs. Quote Link to comment Share on other sites More sharing options...
Rudaz Posted June 22, 2011 Author Report Share Posted June 22, 2011 Hi thanks for reply. I have a slight bit of oil in spark plug 1 area next to filler cap but I put this down to the filler neck being broken as it's always had a bit of oil in there but not misfired. Also it doesnt loose oil?? Just put a new filler neck on but now you say this I'm worried lol. Could it be a big job as I'm no mechanic but have a lot of mates that can do it. Thanks Danny Quote Link to comment Share on other sites More sharing options...
Rudaz Posted June 22, 2011 Author Report Share Posted June 22, 2011 I have it running and unplugging tge clips going to the injectors one at a time and once again when I unplug injector 3 there is no change so I'm thinking there is no electric getting to it... Any ideas? Quote Link to comment Share on other sites More sharing options...
Widelupo Posted June 22, 2011 Report Share Posted June 22, 2011 I have a similar problem at the moment. I got a slight shudder and jerks a bit in 2nd gear. I saw slight oil seeping from my rocker cover into one off my spark plugs.(closest to oil filler). I sealed the rocker cover and changed the spark plug. Ran fine during test run. But the problem is back. Quote Link to comment Share on other sites More sharing options...
Widelupo Posted June 22, 2011 Report Share Posted June 22, 2011 Could be a fault with your injector get a diagnostics done. I replaced my injectors last year 2nd hand off a polo. Brand new are like 106 each. Quote Link to comment Share on other sites More sharing options...
Rudaz Posted June 23, 2011 Author Report Share Posted June 23, 2011 Put a new injector in no3 already Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted June 23, 2011 Report Share Posted June 23, 2011 I think the injector is fine as when is is driving you can hear pops and bangs from the exhaust - I think this is fuel from cylinder 3 that is just being swept straight through without being ignited. Quote Link to comment Share on other sites More sharing options...
Rudaz Posted June 23, 2011 Author Report Share Posted June 23, 2011 I think the injector is fine as when is is driving you can hear pops and bangs from the exhaust - I think this is fuel from cylinder 3 that is just being swept straight through without being ignited.I know. New coil pack dudnt make slight bit of change so thought injectors the next thing to try. Hoping it's not ecu related?? Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted June 24, 2011 Report Share Posted June 24, 2011 I cant see how. Have you swapped the plugs round? Quote Link to comment Share on other sites More sharing options...
Widelupo Posted June 24, 2011 Report Share Posted June 24, 2011 I just checked my plugs all 4 wer full off oil..... Well not full but there was signs off oil on the plugs I just cleaned them and put them back in. Car runs much better now. But if I put new plugs in I think that will solve my problem. Quote Link to comment Share on other sites More sharing options...
Rudaz Posted June 24, 2011 Author Report Share Posted June 24, 2011 I cant see how. Have you swapped the plugs round?Yep swapped them around twice feels more than a slight misfire now. I'm not even using it at the moment. Danny Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted June 24, 2011 Report Share Posted June 24, 2011 Balls.Im out of ideas to be honest. Can you remember when it first started doing it? Quote Link to comment Share on other sites More sharing options...
Big Jase Posted June 24, 2011 Report Share Posted June 24, 2011 Guffed throttle body? Quote Link to comment Share on other sites More sharing options...
Rudaz Posted June 24, 2011 Author Report Share Posted June 24, 2011 (edited) Errm maybe about 2-3 weeks ago?? Slightly bad at first, gradually worse. Big jase - put most o a bottle of red-x in throttle body and one in tge fuel and tbf it sounded sweet at first but then went back to standardly sh*t lol. Need fuel now so gonna put some in tomorrow and see if it makes a change, praying it was just a dodgy batch of fuel but know it won't be Edit, by gufted you mean busted? Maybe not opening the top? Humm. Worth a check Edited June 24, 2011 by Rudaz Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted June 24, 2011 Report Share Posted June 24, 2011 Its not the throttle body - it wouldnt be limited to cyl3 if it was, and it is likely that VAGCOM would find a fault Quote Link to comment Share on other sites More sharing options...
Big Jase Posted June 24, 2011 Report Share Posted June 24, 2011 Yeah get it scannedRedex shouldn't go in throttle body, spary carb cleaner in throttle body and rev the car Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted June 24, 2011 Report Share Posted June 24, 2011 Yeah get it scannedRedex shouldn't go in throttle body, spary carb cleaner in throttle body and rev the carIts been scanned - the only fault is misfire in cyl3Did you literally pour the redex down the TB? Im suprised it didnt just stall Quote Link to comment Share on other sites More sharing options...
Rudaz Posted June 24, 2011 Author Report Share Posted June 24, 2011 My mate did it, he is a mechanic so trust him to do it right. Straight down the tb a little bit at a time. Na it didn't stall just got better haha Quote Link to comment Share on other sites More sharing options...
Big Jase Posted June 24, 2011 Report Share Posted June 24, 2011 Yikes that doesnt seem to goodTell him carb cleaner is what you want lol Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted June 24, 2011 Report Share Posted June 24, 2011 I suppose its just the same stuff as in carb cleaner, just in an aerosol Quote Link to comment Share on other sites More sharing options...
Rudaz Posted June 25, 2011 Author Report Share Posted June 25, 2011 It's fixed would you believe after trying 3 different ht leads I tried one more thinking if it's not this then I'm taking it to a garage and it's running sweet! Just shows how temperamental the silicone leads are! The last one (which was new may I add) has cracked my NGK plug down tge ceramic part which will explain it getting worse. So a new plug and lead and codes cleared and it's running great again. Just gonna give it a good service now and fill the tank and enjoy driving again. Cheers guys for the help and thanks to defcon5 for your time, be sure I'll be down next time I have a fault Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted June 25, 2011 Report Share Posted June 25, 2011 Nice one Quote Link to comment Share on other sites More sharing options...
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