BMW-Bob Posted May 18, 2023 Report Share Posted May 18, 2023 General question about Prime & Crank Enrichment, I have the engine running, but if I make various setting changes while engine OFF and connected to the ECU, it does not start on the first try. Yes, I upload to ECU and save the file. If I key off, and retry, immediately Going to ON, then CRANK, the engine will fire right up. It is almost like there is a timer that expires during Key ON while I am making adjustments. Timer expires, and on Prime or Crank Enrichment. Key OFF, seems to reset the timers to 0 Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 19, 2023 Report Share Posted May 19, 2023 Crank enrichment will always happen when cranking regardless. Pre-crank prime may or may not depending if it is set to key on mode or start pos mode. In Key on mode it will only occur when you first turn the key on and wont happen again until the ign is switched off and back on again. Quote Link to comment Share on other sites More sharing options...
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