JDvanb Posted September 16 Report Share Posted September 16 So I've been having a misfire code for sometime now started on cold starts would throw a code and sometimes would even hide cylinders the misfire use to be in more then one cylinder but I had the top of my block resealed and that got rid of the misfires in other cylinders now it's remains in the first cylinder I have spent dumb money getting it diagnosed I've done all new coils spark plugs,injectors and walnut blast, software update from vw and the issue still persists but now it seems to be misfiring not on cold start but after I drive to the back of my garage shut it off for a few minutes and then back on I'm getting hundreds of fish bites in this one cylinder and a code that sometimes turns to a cel or flashing cel. I don't appear to be burning oil. I am absolutely stumped I've been trying to get it fixed before winter but I'm out of ideas and pretty much money lol anyone have any ideas ? It drives completely fine but I'm worried in the winter it's gonna be hiding the cylinder and I won't be able to get it warm enough to clear it and drive off Quote Link to comment Share on other sites More sharing options...
TechieAli Posted September 17 Report Share Posted September 17 Any fault codes? A lot of people seem to replace the cam magnets. Quote Link to comment Share on other sites More sharing options...
gregozedobe Posted September 18 Report Share Posted September 18 Could be a problem in the wiring somewhere to cyl 1. Quote Link to comment Share on other sites More sharing options...
JDvanb Posted September 19 Author Report Share Posted September 19 @TechieAlijust the cylinder one misfire code shows and sometimes I get 02 sensor lean but it's been replaced also. I'm doing a compression test on Friday I'm literally ready to sell it but I love it so much it absolutely breaks my heart so I appreciate the reply . What does changing the cam magnet do ? I'll do a little research rn @gregozedobeI was thinking something like that . Again thank you guys this is my dream car but I'm already looking at trucks cause I need a reliable vehicle for our negative 30 temps in Canada. Quote Link to comment Share on other sites More sharing options...
JDvanb Posted September 19 Author Report Share Posted September 19 Okay so cam magnets look promising and not too expensive if it comes back with good compression that's my next try Quote Link to comment Share on other sites More sharing options...
JDvanb Posted September 19 Author Report Share Posted September 19 Also misfires gos away when under load it's mainly at idle not sure if that helps. I can floor it and it's fine no code and maybe two fishbites Quote Link to comment Share on other sites More sharing options...
OpelCalibraBoss Posted September 19 Report Share Posted September 19 What error is popping up for you? I'd bet on spark plugs 😆. Solenoid. A leak in the intake, too low fuel pressure, and the most common errors in this case are : 16684 - Random/Multiple Cylinder Misfire Detected P0300 - 001 - - MILES ON 16685 - Cylinder 1 P0301 - 001 - Misfire Detected - MIL ON 16686 - Cylinder 2 P0302 - 001 - Misfire Detected - MIL ON 16688 - Cylinder 4 P0304 - 001 - Misfire Detected Quote Link to comment Share on other sites More sharing options...
JDvanb Posted September 19 Author Report Share Posted September 19 @OpelCalibraBoss p030100 is the code and it's the only cylinder. And like I said everything has been done practically. Unfortunately everything you've brought up has been repaired or tested. I'm honestly grasping at straws now. When you say solenoid what is that ? Like cam magnet ? Cause that's what Im thinking now Quote Link to comment Share on other sites More sharing options...
fastandy Posted September 19 Report Share Posted September 19 39 minutes ago, JDvanb said: @OpelCalibraBoss p030100 is the code and it's the only cylinder. And like I said everything has been done practically. Unfortunately everything you've brought up has been repaired or tested. I'm honestly grasping at straws now. When you say solenoid what is that ? Like cam magnet ? Cause that's what Im thinking now If its cam magnet or the valve inside the camshaft you'd normally see cam timing errors reported. And misfires would be unlikely to be on one cylinder only. It would be all cyl or atleast move around. But probably just drive worse, maybe run a little rough. If you want to rule in or out variable cam timing, look at intake and exhaust camshaft timing specified against actual in adv meaduring blovks. It will give you a good idea but I doubt it. And all my go to ideas you've already replaced. Checked fuel pressures? Quote Link to comment Share on other sites More sharing options...
JDvanb Posted September 19 Author Report Share Posted September 19 @fastandy hey man thank you so I did check the valve timing and it's definitely off from the specified to actual now I'm no mechanic and don't understand when we get this deep into it but I figured that's not good.as for fuel pressure I'll try to see if I can figure that out. So I actually have an appointment at VW and they are gonna diagnose for free cause I chewed them out a bit cause they practically ripped me off and denied it but then offered to do free diagnostic so I think I won lol another weird thing is before I had the software update from VW my car's fuel economy was great now it's trash I was getting like 9L to 100km now I'm getting 14 L to 100 km in city so whatever is wrong doesn't like the update Quote Link to comment Share on other sites More sharing options...
JDvanb Posted September 19 Author Report Share Posted September 19 So on obdelleven I found camshaft adjustment specified and actual and at idle actual fluctuates alot and driving it seem to be always a couple lower then specified and fuel pressure seems to be a 100 to 200 kpa less then specified idk if that big enough to cause an issue Quote Link to comment Share on other sites More sharing options...
Msportman Posted September 20 Report Share Posted September 20 Is this problem at idle only? What fuel are you using? Has the car been properly scanned on the move ? I know APR, Revo Racingline have much more in depth scan tools than VW. Have you a local tuner? Quote Link to comment Share on other sites More sharing options...
fastandy Posted September 20 Report Share Posted September 20 13 hours ago, JDvanb said: @fastandy hey man thank you so I did check the valve timing and it's definitely off from the specified to actual now I'm no mechanic and don't understand when we get this deep into it but I figured that's not good.as for fuel pressure I'll try to see if I can figure that out. So I actually have an appointment at VW and they are gonna diagnose for free cause I chewed them out a bit cause they practically ripped me off and denied it but then offered to do free diagnostic so I think I won lol another weird thing is before I had the software update from VW my car's fuel economy was great now it's trash I was getting like 9L to 100km now I'm getting 14 L to 100 km in city so whatever is wrong doesn't like the update 9L in city would beat my car. In urban, not really city driving, but including a decent amount of start stop - traffic lights, 30 to 40mph, I get about 480km from 48-50 litres. So that's over 10L/100km and that is driving fairly sedately. But for you to have noticed that much of a fall, that is a big movement! What update was loaded? Quote Link to comment Share on other sites More sharing options...
fastandy Posted September 20 Report Share Posted September 20 13 hours ago, JDvanb said: So on obdelleven I found camshaft adjustment specified and actual and at idle actual fluctuates alot and driving it seem to be always a couple lower then specified and fuel pressure seems to be a 100 to 200 kpa less then specified idk if that big enough to cause an issue If the cam adjustment phase is not following closely specified or fluctuates around several degrees at constant rpm, it likely means the camshaft solenoid magnet or adjustment valve is on way out. Mine did that. The intake one often does it first (front of car engine). The magnet is the easier and cheaper first fix. And mine started to intermittently report timing set point retard or advance set point not reached if they get too far out and the ecu reports it - CEL. Brake cleaner freed the magnet pin for a while but the codes eventually came back within short time. I didn't have noticeable misfires though, even with a frozen pin in the magnet although driveability / performance must have been affected. 200kpa, that's, like 30psi? From what specified at idle? i,e. how much divergence in relative terms> The thing that is making me ask about fuel pressure is - you've done a lot of everything else!!! And, if you are saying cyl 1 is the problem that is the last injector on the rail from the HPFP on the right hand side viewing from front of vehicle? You could log fuel pressure at WOT briefly as well and see if it is underperforming under higher loading. I looked in the VW mk7 repair manual i have on the HPFP sections but bizarrely there is no testing or pressure thresholds to apply just removal and install instructions but I have heard of the regulators being replaced before. Maybe some more google searching may throw up something ........ I could look at mine at cold start, fast idle, normal idle if you think it will help you. Yours is Canadian, so I guess NA spec, no MPI injectors then just DI injectors. Quote Link to comment Share on other sites More sharing options...
JDvanb Posted Saturday at 00:16 Author Report Share Posted Saturday at 00:16 So to get back to everyone I did a compression test today and cylinder one is reading 118psi while the other cylinders are around 140-145 psi. So I'm assuming that is my issue honestly don't know what to do with this information I think I'm selling my dream car . What's crazy is I've never driven this car hard I've babied it Quote Link to comment Share on other sites More sharing options...
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