ArosaScott Posted August 23, 2021 Report Share Posted August 23, 2021 Ok so the other day i was driving like i normally do and was in 5th at 30mph (been doing that since ownership of the rosa, over 2 years) but then i was coming out of a 30mph into a 50mph pressed down on the throttle to increase speed and it started to stutter / tug, whatever you like to call it (felt like if you was going to stall) since then its been doing it in other gears when i go to apply more throttle. So i had the spark plugs out, all spot on not an issue... so my question is can anybody tell me any common problems or things i need to change? Reading Coil pack / HT leads? Quote Link to comment Share on other sites More sharing options...
mk2 Posted August 23, 2021 Report Share Posted August 23, 2021 Yeah, try leads, then coil pack. Fairly common. Quote Link to comment Share on other sites More sharing options...
ArosaScott Posted August 23, 2021 Author Report Share Posted August 23, 2021 @mk2 Super quick on the reply thank you mate. So i have indeed just ordered some new leads, so you think try them first before buying a coil pack? Anything else to look out for mate? Quote Link to comment Share on other sites More sharing options...
mk2 Posted August 23, 2021 Report Share Posted August 23, 2021 Crank sensor after all else. But could also be a relay or ign switch. Quote Link to comment Share on other sites More sharing options...
Skajme Posted August 23, 2021 Report Share Posted August 23, 2021 2 hours ago, ArosaScott said: Ok so the other day i was driving like i normally do and was in 5th at 30mph (been doing that since ownership of the rosa, over 2 years) but then i was coming out of a 30mph into a 50mph pressed down on the throttle to increase speed and it started to stutter / tug, whatever you like to call it (felt like if you was going to stall) since then its been doing it in other gears when i go to apply more throttle. So i had the spark plugs out, all spot on not an issue... so my question is can anybody tell me any common problems or things i need to change? Reading Coil pack / HT leads? if you take the leads off of the coilpack, the connections will be all crusty if that's what is causing the issue. I've had it on both my GTI's I replaced both the leads and the coilpack as the corrosion was on both Quote Link to comment Share on other sites More sharing options...
ArosaScott Posted August 24, 2021 Author Report Share Posted August 24, 2021 thank you for the replies, i ordered a new set of HT leads last night and today ill order a coil pack. Quote Link to comment Share on other sites More sharing options...
ObjectiveAway Posted August 27, 2021 Report Share Posted August 27, 2021 On 8/23/2021 at 10:06 PM, mk2 said: Yeah, try leads, then coil pack. Fairly common. Why is that so common? My engine had this problem as well. Isnt that somehow connected to clogged crankcase breather or something? For example:“Symptoms of a bad BMW CCV are: white smoke coming out of the exhaust, excessive oil consumption (burning oil), engine running rough and misfiring. Failure of the BMW crankcase vent valve creates a vacuum from air being sucked through the rear main seal.” Quote Link to comment Share on other sites More sharing options...
ArosaScott Posted August 27, 2021 Author Report Share Posted August 27, 2021 (edited) Ok new coil and spark plug leads fitted and i think i see the problem. on the coil pack PORT A & D look very grey with corrosion while C & B looked fairly clean. We also saw the same results on the old spark plug leads which connected to A & D looked very worn while C & B looked fine. About to take it for a test drive and with some luck it will have solved the issue. https://imgur.com/a/YCqXlHM <- Pictures of bad ports, and the clean ones. Edited August 27, 2021 by ArosaScott Quote Link to comment Share on other sites More sharing options...
ObjectiveAway Posted August 27, 2021 Report Share Posted August 27, 2021 1 hour ago, ArosaScott said: Ok new coil and spark plug leads fitted and i think i see the problem. on the coil pack PORT A & D look very grey with corrosion while C & B looked fairly clean. We also saw the same results on the old spark plug leads which connected to A & D looked very worn while C & B looked fine. About to take it for a test drive and with some luck it will have solved the issue. https://imgur.com/a/YCqXlHM <- Pictures of bad ports, and the clean ones. Did you noticed a specific reason for the A&D ignition problem? Might be its just a result of another unsolved problem. Quote Link to comment Share on other sites More sharing options...
ArosaScott Posted August 27, 2021 Author Report Share Posted August 27, 2021 The cable ties holding the leads onto the coil pack maybe had something to do with it. (Been like that since the day i bought the car) noticed A & D was also super loose on the coil pack. 1 Quote Link to comment Share on other sites More sharing options...
Skajme Posted August 27, 2021 Report Share Posted August 27, 2021 it's just what happens to them unfortunately, both my GTIs had the exact same issue with just two leads and mine were all attached properly. I've seen it mentioned a fair few times on this forum by others aswell! Quote Link to comment Share on other sites More sharing options...
ArosaScott Posted August 28, 2021 Author Report Share Posted August 28, 2021 @Skajme You and MK2 was spot on. It took about 10 minutes to swap everything over, most annoying part was getting the plug/clip off. Coil Pack - £25 Spark Plug Leads - £13 (InterMotor) Quote Link to comment Share on other sites More sharing options...
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