efi265 Posted February 8, 2023 Report Share Posted February 8, 2023 So it seems sometimes my car wont fire it is like its 180 deg out and can backfire which isnt ideal.i can tell when it doesnt fire now so usually catch it .if i shut it down and try again it will fire as per normal although think its usually can be on the 3rd attempt. Running a g4+ extreme Smart coils, HALL EFFECT CRANKSHAFT SENSOR - HIGH RPM VERSION - H-GTSEN2 via efi hardware and modified dissy for cam sensor signal Engine is a hemi 265 Cheers https://1drv.ms/u/s!AsueBbAiWzmW100RS6AR4vO0nfCs?e=ZVjtrL pcl file Quote Link to comment Share on other sites More sharing options...
efi265 Posted February 8, 2023 Author Report Share Posted February 8, 2023 https://1drv.ms/u/s!AsueBbAiWzmW11Cgp1MRvAWDAdFb?e=bQx2dA log car runs Quote Link to comment Share on other sites More sharing options...
Adamw Posted February 8, 2023 Report Share Posted February 8, 2023 That sounds like it isnt syncing on the correct phase occasionally. Possibly the cam edge either crossing the sync point or its voltage isnt meeting the arming threshold or similar. Can you do a trigger scope while cranking. Preferably during whatever conditions causes the slowest cranking speed - on some engines that may be on a cold morning when the battery voltage is lowest, or on some engines it may be for example when its hot and has been sitting a while heat soaking the starter motor. If you havent noticed any pattern to when it happens most often then just give us a scope done at any time and it may still be useful. Quote Link to comment Share on other sites More sharing options...
efi265 Posted February 9, 2023 Author Report Share Posted February 9, 2023 Ok cool when its cold usually i think ill try it tomorrow Quote Link to comment Share on other sites More sharing options...
efi265 Posted February 10, 2023 Author Report Share Posted February 10, 2023 sorry i have logged a couple of trigger scopes not sure on what settings to do this .so here goes https://1drv.ms/u/s!AsueBbAiWzmW11LfP26mZNIXrCOh?e=gYf0U1 https://1drv.ms/u/s!AsueBbAiWzmW11FjduocZjph5xFA?e=ml5qby thanks this one is the car running https://1drv.ms/u/s!AsueBbAiWzmW11NrM6cR9JSO6bc9?e=WlKfF6 Quote Link to comment Share on other sites More sharing options...
Adamw Posted February 10, 2023 Report Share Posted February 10, 2023 The first 2 you must have clicked capture before you started cranking the engine so you have just captured the stationary engine. You need to click capture when the engine is cranking. The 3rd scope with the engine running shows the cam sensor is wired backwards. Swap the +/- wires at the sensor plug to correct this. I doubt that is causing your start issue though, but fix that first then do us another scope while cranking. Quote Link to comment Share on other sites More sharing options...
efi265 Posted February 22, 2023 Author Report Share Posted February 22, 2023 thanks for your time Adam i have finally swapped my cam wires over and done some more trigger scopes which i will attach . cheers Ross https://1drv.ms/u/s!AsueBbAiWzmW11Q2FZv4jR02B29G?e=q5MydD https://1drv.ms/u/s!AsueBbAiWzmW11XGeO8gwYwwlFMU?e=oFqVhd Quote Link to comment Share on other sites More sharing options...
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