https://www.s2forum.com/ Discussion area for all things related to fitting and tuning after market engine management to your cars and projects en Mon, 09 Nov 2026 02:29:54 GMT vBulletin 60 https://www.s2forum.com/images/misc/rss.png https://www.s2forum.com/ https://www.s2forum.com/forum/technical/aftermarket-engine-management/2162472-urs4-aan-not-starting-after-cam-shaft-wheel-swap Sun, 11 Oct 2026 15:03:53 GMT Hi, i have URS4 with swapped Emu Black - did it myself and wiring stayed thanks to the emu black adapter to original car socket. Car was running great, but i have decided to do timing belt due to failing water pump. With that i purchased the adjustable cam wheel, coolant pump from RS2 (26t) and...
Car was running great, but i have decided to do timing belt due to failing water pump. With that i purchased the adjustable cam wheel, coolant pump from RS2 (26t) and 150t timing belt. I put it together and it did not start. It seemed like it wanted but did not. In Emu everything was in SYNC while cranking. ECU claims no issues whatsoever.

Later i realized that i did not check the notch for the cam shaft sensor and i was right about that. I adjusted the notch approximately to the previous wheel ( i had ti cuz there is slso a notch in the intake camshaft itself, and it seemed that i wants ti start even more but u was not successful.

Anybody sny tips on what to check? Iam posting the wheel i bought and some screens from Ecumaster

Before i touched the car, it was running great ofc.
the timing belt should be correct, although the 0 degree mark on the flywheel is not visible, but its on the same mark it was before i did timing belt (somebody did there a custom mark). Spark is there, fuel is there.

I tried everything..]]> Aftermarket Engine Management Macek https://www.s2forum.com/forum/technical/aftermarket-engine-management/2162472-urs4-aan-not-starting-after-cam-shaft-wheel-swap