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Megasquirt Why is she so hard to start

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Old Sep 10, 2012 | 09:39 AM
  #1  
Slideways FC3S's Avatar
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e-brake what???
Tenured Member 10 Years
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From: rapid city sd
Why is she so hard to start

Things you need to know
S5 NA Rotors
S5 NA Irons large street port (large enough to brap when on stock ecu @ 700rpm)
S5 T2 Housings also ported
S5 T2 Injectors 550cc X 4
S5 T2 UIM and LIM ported to match 6 port irons
Large FMIC
MS2 3.57 with zeal daughter card OEM cas stabbed to mazda spec 5 deg leading
MS2 version 3.2.4

Asking my car to transition from cranking to running is like asking you to cut your arm off with a butter knife.

Every time I try to get her to start I can taste fuel possibly from not having cats.
When she does start she Idles and revs fine but getting the running isnt easy.
I would be ok with her starting on the third try but thats never the case, 5 times 7, 10 or none.

I have a data log and my msq. I will get another one log later in the day after the battery gets charged again as I almost had her start on the first try but none the less she didn't. The data log is from 4 attempts after the initial when I figured she just wasn't going to start and I should log it to see whats going wrong. I'm just gonna log every start from now on.

Thanks to anyone who looks, gonna take a nap and try again around 1pm or so.
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Old Sep 10, 2012 | 05:18 PM
  #2  
13bdarren's Avatar
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Tenured Member 15 Years
 
Joined: Jun 2004
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From: Canada
sounds like to much feul in the afterstart or cranking enrichement. Also try changing the cranking rpm up or down a little
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Old Sep 16, 2012 | 10:19 AM
  #3  
Aaron Cake's Avatar
Engine, Not Motor
Tenured Member: 20 Years
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Joined: Feb 2001
Posts: 29,798
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From: London, Ontario, Canada
Too much fuel.

Turn off the afterstart enrichment for now.

Take about 20% out of the warmup encrichment.

Try a fixed cranking pulse of 10MS.

I'm just guessing based on you description because I can't seem to open any MSQ that people post here for some reason.
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