evolve Posted September 21, 2019 Report Share Posted September 21, 2019 hello guys i put a g4+ xtreme on a porsche 3.2 year 1999. Trig 1 is 60-2 and trig 2 is hall 1 pulse. rpm signal is fine and stable. no error. But i have no spark wen cranking. Ignition test is good. Anybody can help me fine the issue ? boxter s dev.pclr Quote Link to comment Share on other sites More sharing options...
Richard Hill Posted September 21, 2019 Report Share Posted September 21, 2019 Have a look at runtime values, and see what the parameters engine kill, fuel and ignition cut are whilst cranking. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 21, 2019 Report Share Posted September 21, 2019 What does it have for coils/ignitors? If you have "dumb coils" without an ignitor you can get a spark when the plug is in free air during an ignition test, but not have enough energy to create a spark when in the cylinder under compression. Quote Link to comment Share on other sites More sharing options...
evolve Posted September 24, 2019 Author Report Share Posted September 24, 2019 i dont see any limiter active while i crank it. I use oem coils (BERU ZS177) with external igniter. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 24, 2019 Report Share Posted September 24, 2019 So what are you using for an ignitor? How are you checking there is no spark when cranking? Is the coil +12V supply maintained during cranking? Can you post a short log of it cranking? Quote Link to comment Share on other sites More sharing options...
evolve Posted September 24, 2019 Author Report Share Posted September 24, 2019 i use 2x huco 138052 igniters. I checked and both 12v and ground are ok on the coil when cranking. I crank the car with cyl 5 coil removed and dummy spark plug. Here are runtime values when cranking. I ll make a log now? Any specific parameter to log ? Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 24, 2019 Report Share Posted September 24, 2019 3 minutes ago, evolve said: I ll make a log now? Any specific parameter to log ? Do a PC log with all parameters recorded. There is an "add all" button at the bottom of the logging set up screen. Here is a quick vid showing how to do the log: https://www.youtube.com/watch?v=_P1LRANeO4A Quote Link to comment Share on other sites More sharing options...
evolve Posted September 24, 2019 Author Report Share Posted September 24, 2019 here is log boxter s cranking.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 24, 2019 Report Share Posted September 24, 2019 Sorry, I dont see any ECU related reason for no spark. It is seeing solid RPM, no trigger errors, no cuts and commanded dwell is steady so the ECU will be commanding spark and the ignitors should be responding. You are going to have to do a bit more work with an LED test light or oscilloscope to see that the ignition signal is making it into and out of the ignitor. Unrelated but one thing I noticed in your log that I wanted to warn you about while I remember; The throttle is going to 40% during cranking, this is due to the 20% in your E-throttle target table and the extra 20% in the start up step table. If it ever does get spark it is going to rev straight to the rev limiter as soon as it starts so please fix that. It would be more common to have about 5% in the target table and 2% in the start up step. Quote Link to comment Share on other sites More sharing options...
evolve Posted September 24, 2019 Author Report Share Posted September 24, 2019 ok, so i just tested with one smart coil on cyl5 (VAG tfsi coil). And i have a spark when cranking... I cannot understand why it works with the igniter using ignition test but not when cranking. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 24, 2019 Report Share Posted September 24, 2019 5 minutes ago, evolve said: so i just tested with one smart coil on cyl5 (VAG tfsi coil). And i have a spark when cranking... I cannot understand why it works with the igniter using ignition test but not when cranking. Good work. On 9/22/2019 at 8:46 AM, Adamw said: you can get a spark when the plug is in free air during an ignition test, but not have enough energy to create a spark when in the cylinder under compression. It suggests for whatever reason you have very low ignition energy - not enough current to allow the coil to "charge" properly. It may be a wiring/pinout problem either at the coil or ignitor or maybe bad ignitor etc. Quote Link to comment Share on other sites More sharing options...
Bebelracing Posted October 7, 2019 Report Share Posted October 7, 2019 theses coils doesn't need any ignitor. there are built in. Quote Link to comment Share on other sites More sharing options...
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