24x Ls1 ms3x no start
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24x Ls1 ms3x no start
Just got it reading rpm signal but still cant get it to fire up completely. It starts to fire but gets choppy an quits. If anyone can peep at my tune/short log maybe point me in the right direction it would really be appreciated.I did give it throttle towards the end of the log. 5.3, Siemens deka 80lbs inectors, on3, ls1 intake
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Re: 24x Ls1 ms3x no start
The most pressing issue appears to be a need to tune the cranking pulse width. Beyond that:
Battery voltage drops a lot while cranking. Might want to check that.
Your MAT sensor appears to be unplugged.
Any reason it's running batch fire fuel settings with the MS3X? LS1 mode will support full sequential without any trouble.
What sort of coils are you running? That's a lot of dwell.
No idle valve?
Battery voltage drops a lot while cranking. Might want to check that.
Your MAT sensor appears to be unplugged.
Any reason it's running batch fire fuel settings with the MS3X? LS1 mode will support full sequential without any trouble.
What sort of coils are you running? That's a lot of dwell.
No idle valve?
Matt Cramer -1966 Dodge Dart slant six running on MS3X
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Re: 24x Ls1 ms3x no start
Add to the above...
With 8 squirts/cycle and large injectors, the DT better be near-perfect. Is you value of 1.3 msec a measured value? Did you flow all the injectors to get the best average for rate and DT?
I gotta ask... have your verified spark timing with a simple (non dial-back) light? Have you verified it for all cylinders, or at least tried "wasted COP"?
With 8 squirts/cycle and large injectors, the DT better be near-perfect. Is you value of 1.3 msec a measured value? Did you flow all the injectors to get the best average for rate and DT?
I gotta ask... have your verified spark timing with a simple (non dial-back) light? Have you verified it for all cylinders, or at least tried "wasted COP"?
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Re: 24x Ls1 ms3x no start
Figured out what it was, guess i had to many brews when wiring cause I didnt wire my coils corectly on my ms3x. Fired right up after that runs super rich so ill have to adjust that once i get my downpipe 02 welded on. I was under the impression that ms didnt support 3 wire idle valves so i never wired it
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Re: 24x Ls1 ms3x no start
2- and 3- wire PWM idle valves are supported.rockstar4556 wrote:I was under the impression that ms didnt support 3 wire idle valves so i never wired it
4- and 6- wire stepper idle valves are supported.
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
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My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
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New users, please read the "Forum Help Page".
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Re: 24x Ls1 ms3x no start
How exactly did an LSx end up with a three wire idle valve?rockstar4556 wrote:Figured out what it was, guess i had to many brews when wiring cause I didnt wire my coils corectly on my ms3x. Fired right up after that runs super rich so ill have to adjust that once i get my downpipe 02 welded on. I was under the impression that ms didnt support 3 wire idle valves so i never wired it
Matt Cramer -1966 Dodge Dart slant six running on MS3X