View Full Version : 2nd cylinder not burning, what could be the prob.
bullomar
06-07-2010, 01:28 PM
hi,
I took the car to mechanic since dealer told me I need to change my injectors on 2.0 fsi in which I did not believe.
After checking spark plugs which are new, ignition coils-also new, we reassembled everything and pulled out injectors and tested them.
they where excellent so dealer wanted to rip me off for this.
now, my problem is that cylinder 2 is not burning at all. spark is oily, compression on all 4 are ok and my car runs like shit.
valves on 2nd cylinder are oily and I can say it did not burn any fuel for some time...
also after checking out cam follower, it was broken but depending to its look and damage it seems like it broke few minutes before I came to mechanic...
my car has no power at all, I know I need to change cam follower and I will do that first, but why does not my cylinder 2 burn any fuel at all?
as I said, injectors are great, coils and sparks also...valves on cyl 2 are oily and spark which was in cyl2 was oily too. I also tried changing spark with each other and they all work fine...
what could my problem be related to?
electricity?
cables?
ecu?
why only cyl2 does not work-burn etc..
thank you all for your help and suggestions.
Tusin
06-07-2010, 01:51 PM
How do you know the coil pack is good? They can be bunk from the factory. Have you tried moving a coil pack from a good cylinder to the bad one and see if it starts firing?
bullomar
06-07-2010, 01:56 PM
hi, first of all, 5-6 months ago when shaking begun on my car during the cold mornigs etc I was thinking my coil packs where bad so after speaking to my dealer and after 4 months when they finally agreed to change coils due to recall campaign I found that the problem is still there so I went for searching more what could be the problem and that is when I have changed also spark, PCV valve, DV valve, hoses and now finally, I have checked injectors and they are also good.
Yes, I did swap my old coil packs around and the problem was still in cyl 2, now after I bought new ones, the problem is still there...
loooooooooooooosing my minddddddddddddd
Tanner
06-07-2010, 01:58 PM
Maybe the wiring harness to the second cylinder's coil pack is shot? Has that been inspected yet?
Tusin
06-07-2010, 02:02 PM
That was my next idea.....
Your plugs are gapped correctly right?
What codes are you pulling?
bullomar
06-08-2010, 03:28 PM
That was my next idea.....
Your plugs are gapped correctly right?
What codes are you pulling?
Hi, gap is correct, codes are p0300 and p0302 only.
I will chech the wiring next...
Any other ideas? Anyone?
airbornerifleman
06-09-2010, 08:02 AM
hi, first of all, 5-6 months ago when shaking begun on my car during the cold mornigs etc I was thinking my coil packs where bad so after speaking to my dealer and after 4 months when they finally agreed to change coils due to recall campaign I found that the problem is still there so I went for searching more what could be the problem and that is when I have changed also spark, PCV valve, DV valve, hoses and now finally, I have checked injectors and they are also good.
Yes, I did swap my old coil packs around and the problem was still in cyl 2, now after I bought new ones, the problem is still there...
loooooooooooooosing my minddddddddddddd
I had the exact same issue, and changed the exact same things. My problem ended up being the injector in cylinder 2, I know you checked your injectors, but did you try swapping the injector from #2 to another cylinder? I strongly believe it's still your injector. Good luck, dude!
Tanner
06-09-2010, 08:12 AM
I'm thinking the same thing - could be an injector but if they tested it and deemed it okay, then it might be something else.
I know I'm getting massive number of misfires on cylinder three but suspect it might be buildup on the intake valve. I swapped things around like what bullomar has done, but don't have the proper tools to swap the injectors to see if the misfire follows the injector or not.
P0234
06-09-2010, 08:13 AM
compression, fuel and ignition are required, you need to figure out what is missing. As others have suggested, moving the injector might provide a clue, however your mention of the vavles being "oily" and the plug being oily certainly indicate another, bigger problem
bullomar
06-09-2010, 09:38 AM
compression, fuel and ignition are required, you need to figure out what is missing. As others have suggested, moving the injector might provide a clue, however your mention of the vavles being "oily" and the plug being oily certainly indicate another, bigger problem
hi p0234,
maybe I have said wrong, the intake valves on cyl 2 are not oily, they have much more carbon built on them comparing to other valves on other cylinders.
I was thinking maybe if I clean those carbon deposits, my problem will be solved but I dont think carbon can do such problem on cylinder so it will not burn.
I did not try to change injectors and their places because we have tested them all on some injector machine which puts gas through all of them in the same time so you can see does any of them fail and how much fuel will they throw in some period...
I think I will check wiring and look around before swapping injectors with each other because mechanic will need to put everything together just to see is everything working fine and since I was present when he has pulled everything just to come to injectors, I can say that is very complicated job :)
thanks
Tanner
06-09-2010, 09:48 AM
Sounds like what I'm having but with the #3 cylinder. By tomorrow I should have an answer on whether the intake valve cleaning (hopefully I'll get a call in an hour or two to go down and take a picture of all of the intake valves) resolved the misfires or not.
Basically, what I've noticed, using the vagcom tool and monitoring measuring blocks 15 and 16, quite a few misfires on three, but after a while it subsides. Get the odd one on other cylinders but nothing that triggers a flashing CEL (need at least 100 consecutive misfires and the count resets when you get off the gas from what I've seen).
jimrobbington
06-09-2010, 11:57 AM
Good luck with this issue, I have no insight, but just wanted to compliment you on your English! Very good English from Bosnia. I have heard worse from 17 yr olds from Jersey!
bullomar
06-10-2010, 05:49 AM
Good luck with this issue, I have no insight, but just wanted to compliment you on your English! Very good English from Bosnia. I have heard worse from 17 yr olds from Jersey!
Hehe,thank you Jim, I wrote first post when I came from mechanic and when I was very upset and tired so even if noticed some mistakes in it, I was not able to correct them :)
I am happy to help you all if you have some troubles translating Croatian, Bosnian or Serbian language to English, just send me a message...
I am still waiting my cam follower to come (tomorrow) and to put it in HPFP. Than I will swap my injectors just in case to see will cyl 2 work as it should or not.
Thanks again,
Omar
vtsquid
06-10-2010, 07:30 AM
Got a hold of some Bosnian porn once...
Bosnian chicks are HOT!!!
Sorry,I couldn't resist.
B72.0T
06-10-2010, 08:29 AM
Im bosnian hahah... Sta ima Omar?
bullomar
06-10-2010, 09:32 AM
Im bosnian hahah... Sta ima Omar?
Hejjj, whass up, dobro je sve..malo auto me zeza al valjda cu to popravit :)
bullomar
06-10-2010, 09:32 AM
Got a hold of some Bosnian porn once...
Bosnian chicks are HOT!!!
Sorry,I couldn't resist.
hehe, yes they are...lucky u :)
B72.0T
06-10-2010, 11:24 AM
Hejjj, whass up, dobro je sve..malo auto me zeza al valjda cu to popravit :)
Ako bog da :)
Good luck. And let us know when you resolve it.
bullomar
06-11-2010, 02:57 AM
Ako bog da :)
Good luck. And let us know when you resolve it.
Today cam follower came so we will se will any cylinder have misfires when we put all together again...
Tanner
06-11-2010, 04:27 AM
What's the mileage on your car? I'm pretty sure that if the misfires are there, you need the intake valves cleaned.
B72.0T
06-11-2010, 10:59 AM
Pics of cam follower too, as well as your mileage on the car.
Tanner
06-11-2010, 11:33 AM
I'd guess that if you were having a fueling issue you'd be getting other codes related to insufficient fueling.
Still think its a classic case of buildup.
bullomar
06-12-2010, 10:35 AM
okay, mechanic called today, so after putting back on new cam follower, the car was running better than before but still there where some cut-offs while driving...
we connected vag-com while driving so vag-com was reading now cyl1 has multiple misfires.
Mechanic told me he has put injector from cyl2 to cyl1 so now we know my injector is bad and I will need to change it.
I ordered injector today so next week we will swap it with the bad one....
i will keep you updated.
thanks
bullomar
06-12-2010, 10:43 AM
I had the exact same issue, and changed the exact same things. My problem ended up being the injector in cylinder 2, I know you checked your injectors, but did you try swapping the injector from #2 to another cylinder? I strongly believe it's still your injector. Good luck, dude!
hey airborn...
it seems you where wright!
injector from cyl2 was putted back to cyl1 after I changed my cam follower and when I took it for a ride, vag-com pulled codes that my cyl1 now has misfires instead of cyl2 where this injector was...
anyway, I noticed that, when I am driving lets say at some speed without acceleration car goes fine, but when I press gas pedal my car has cut offs and shakes, even if I get from 0 to 100 kmh nd I drive it constantly 100km, it goes fine but any other acceleration has cut offs...
so...when we have tested injectors, this testing machine only stay and simulate same rpm's while testing and it dont have simulation and variation in rpm's like when you drive. because of this, every injector was good at the test and we could not see any differences in them... :)
thank you all
bullomar
06-12-2010, 10:54 AM
so this is how it looks now after 1 hour of wrapping carbon look a like vinyl from e-bay...
http://www.audizine.com/gallery/data/500/medium/IMG00567-20100612-1858.jpg
I had some dents over my grill so I decided to see how will it look like with this... it looks quite better on sun light and live...
it is getting dark here in Sarajevo...
anyway, I just wanted to share it with you guys..
thanks
Omar
airbornerifleman
06-14-2010, 07:10 PM
hey airborn...
it seems you where wright!
injector from cyl2 was putted back to cyl1 after I changed my cam follower and when I took it for a ride, vag-com pulled codes that my cyl1 now has misfires instead of cyl2 where this injector was...
anyway, I noticed that, when I am driving lets say at some speed without acceleration car goes fine, but when I press gas pedal my car has cut offs and shakes, even if I get from 0 to 100 kmh nd I drive it constantly 100km, it goes fine but any other acceleration has cut offs...
so...when we have tested injectors, this testing machine only stay and simulate same rpm's while testing and it dont have simulation and variation in rpm's like when you drive. because of this, every injector was good at the test and we could not see any differences in them... :)
thank you all
Well, I'm glad that you found the culprit, however it's still disappointing that our injectors are failing so soon. Will you be replacing all 4? I believe that clogged injectors are a hybrid problem caused by carbon builds up in our motors.
The clogged injector and carbon build-up issue in our cars is like a grenade with the pin pulled and the spoon lifted. I believe this will be a bigger problem than any other current (cam follower, HPFP, flapper motor…) issues on the B7 2.0T motor, thus far. Mark my work gentleman!
bullomar
06-15-2010, 11:03 AM
So this is how my cam follower looks like after almost 100.000km or about 60.000 miles...
After replacing this one with the new OEM one, car goes great but still I can feel some misfires when in WOT because of the faulty injector on cyl1.
http://www.audizine.com/gallery/data/500/medium/IMG00582-20100615-1118.jpg
Thanks
Omar
Tanner
06-15-2010, 11:08 AM
Did you look at your cam lobe and HPFP when you replaced the cam follower?
The plunger or whatever you want to call it, that is part of the HPFP:
http://ecsmotorsports.com/images/cpe/mzr_hpfp1.jpg
.. should be going into the cam follower. Given that your follower basically wore right through, that tip of the plunger is now making direct contact on the cam lobe and that can't be a good thing for both the lobe and the HPFP.
Typically when the follower is worn right through, the lobe and HPFP needs to be replaced.
bullomar
07-28-2010, 09:15 AM
Hi Tanner,
after driving with new cam follower for 1000-2000 miles and after my brand new injector came, we decided to check the cam again when we where replacing injector in cyl 1.
Cam looks like a new and there is no any problem. I also replaced my injector and replaced my old OEM oil drain plug with the magnetic one which will collect any left overs of broken cam.
This tip of the plunger which you are mentioning is not so bad, it has some small traces of wear but not so important and I dont believe it could make some troubles.-Mechanic has told me, that my cam broke just some miles before I came to him so there are no any other problems with HPFP or cam.
Anyway, car goes very good, I dont have any problems especially in morning at cold starts when it was shaking with CEL flashing saying it was cyl 1...so problem solved! :)
RandyQUATTRO
07-28-2010, 02:03 PM
This is good news! I have been getting misfires in cylinder 3. Almost same exact symptoms - cruising in 5 or 6th, go WOT and car starts shaking/bucking, get CEL. Had this cleared out a few times from dealer but codes only reveal misfires. Guess I'll start looking into injectors.