Guest |245| Posted July 5, 2009 Report Share Posted July 5, 2009 I need some tips on how to improve the cold start on my E85 powered SR20DET. To make it start now, i crank 2-3 seconds a time and the 4.th or 5th. time the engine shows signs of starting. But first at the 8. or 9th try it finally starts and runs normally. When starting, I don't use the throttle at all, if i do so the engine seems completely dead -suspecting the acceleration enrichment or warmp-up table being the cause of this. The problematic area is when temperatures are below 30 degrees celsius. I am looking for what values people with better starting engines are using. At 10 degrees C. (which is most used here) I have currently 34ms pre crank prime, 70% first crank enrichment, 250% crank enrichment, for 2 seconds, then 220% post start enrichment for 3,8 seconds and 18 seconds post start decay time. My ignition table looks like this: MGP....0........500......750......1000 RPM -100...15........15.......15........15 -80....15........15.......15........15 -60....15........15.......15........15 -40....15........15.......15........15 -20....10........16.......16........20 0.......10........16.......20........20 Any suggestions for what to try or values that should be changed are well appreciated! Quote Link to comment Share on other sites More sharing options...
Guest |85| Posted July 5, 2009 Report Share Posted July 5, 2009 Did you connect one of the DI inputs to the starter wire and assign it as Start Position? Quote Link to comment Share on other sites More sharing options...
Guest |245| Posted July 5, 2009 Report Share Posted July 5, 2009 It's a v44 plug in, but i can double check the wiring of the adapter loom tomorrow. Quote Link to comment Share on other sites More sharing options...
rayhall Posted July 6, 2009 Report Share Posted July 6, 2009 I am not a E85 expert. I have never tuned an engine with that fuel. I know years ago we had problems with engines starting when very cold at -30 deg temps. Adding a lot of cranking ignition timing and more dwell time fixed the problem. This is a dwell table from a Honda K20, that gives a powerful spark when cranking at low voltage, and was the type of table setup used to help start very cold engines. Quote Link to comment Share on other sites More sharing options...
Guest |245| Posted July 6, 2009 Report Share Posted July 6, 2009 Tried similar values as above and gave it a few more degrees of ignition down low. Car immediately showed signs of starting at second attempt and startet very good at the third, and ran much smoother than before Quote Link to comment Share on other sites More sharing options...
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