# Non start yb turbo **URL:** \ **Category:** EMU BLACK / CLASSIC\ **Created:** [April 26, 2025, 1:17pm UTC](https://community.ecumaster.com/t/non-start-yb-turbo/3580 "2025-04-26T13:17:28Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![seant](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@seant](https://community.ecumaster.com/u/seant)\ **Post date:** [April 26, 2025, 1:17pm UTC](https://community.ecumaster.com/t/non-start-yb-turbo/3580/1 "2025-04-26T13:17:28Z")
Hi, hope some can help. My tuner has not set up emu black on a cosworth yb turbo b4. We cant get it to fire up. Its running kop and using starndard 4 point crank pulley for primary trigger. Distributor phase sensor for the cam 1 trigger. Its shows sync’d when cranking an we have a spark. There must be a setting we have missed as it doesn’t even fire. Anyone used this set up or have a start up map possibly? Contacted emu support and they sent me a map with most parameters unchecked, so no use to anybody. Thanks ---
**Author:** ![FloorItGarage](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/flooritgarage/32/61_2.png) [@FloorItGarage](https://community.ecumaster.com/u/FloorItGarage)\ **Post date:** [April 26, 2025, 9:42pm UTC](https://community.ecumaster.com/t/non-start-yb-turbo/3580/2 "2025-04-26T21:42:39Z")
Have you checked base timing with a timing light? can you post your current map for us to see the settings etc? a 4 tooth primary trigger is not ideal, is it possible to get a 36 or even 12 tooth wheel in there? ---
**Author:** ![seant](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@seant](https://community.ecumaster.com/u/seant)\ **Post date:** [April 27, 2025, 12:04pm UTC](https://community.ecumaster.com/t/non-start-yb-turbo/3580/3 "2025-04-27T12:04:15Z")
hi,yes had a timing light on it, it seemed we we 180 out too start with, we did have it firing and popping/locking up at first, think he had the coil output offset on the wrong setting it now set to 0. ![image](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/2X/3/393654ee05de3a7fe7c5104df3ce591c407bbfc7.jpeg) ![20250427_125344_resized](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/2X/4/48c475d6466268497ac7f1fec889da41dcff3933.jpeg) ![20250427_125222_resized](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/2X/3/3f9f7cc2a97e9a3b1510e32edcfc805ed28a9ded.jpeg) ---
**Author:** ![FloorItGarage](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/flooritgarage/32/61_2.png) [@FloorItGarage](https://community.ecumaster.com/u/FloorItGarage)\ **Post date:** [April 28, 2025, 4:26am UTC](https://community.ecumaster.com/t/non-start-yb-turbo/3580/4 "2025-04-28T04:26:38Z")
should not need a pull up resistor for a VR sensor The crank pulley has a 4 tooth sensor and the cam has a 2 tooth (un even spacing?) I don’t think N+1 is the correct trigger, I believe it needs at least 3 teeth to function correctly, I’d change to a 1 tooth with a window (advanced filter) or better yet grind off a tooth IMO that’s a lot of cranking fuel, have you tried de-flooding by opening the throttle all the way when cranking? Post the entire tune and log of a start attempt please ---
**Author:** ![seant](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@seant](https://community.ecumaster.com/u/seant)\ **Post date:** [May 4, 2025, 10:08pm UTC](https://community.ecumaster.com/t/non-start-yb-turbo/3580/5 "2025-05-04T22:08:25Z")
Thanks, switched to a 36-1 tooth crank pulley ,up and running now. Had my first drive yesterday awesome 👌