Warm Start Settings
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- Posts: 39
- Joined: Sat Sep 19, 2015 10:31 am
Warm Start Settings
I've left the start up settings pretty much alone on the MS2 because they work OK cold and for hot restarts either after stalling or after a brief fuel stop. I frequently find that when still hot, but after standing for 15 minutes or so, starting isn't so easy and it will only fire with a wide throttle opening. This has been quite consistent in when it occurs and in the need for the wide throttle opening. Any ideas which settings I should be looking at?
- panel
- Posts: 4200
- Joined: Sun Sep 24, 2000 12:01 am
Re: Warm Start Settings
Been a few years for me re MS and just getting back into it. Where is your IAT sensor located ? Pics ?
'65 Bus with a JDM Subaru EJ20 Turbo
Built by Germans powered by Japanese and brought together by Canadians
Built by Germans powered by Japanese and brought together by Canadians
- gtmdriver
- Posts: 108
- Joined: Mon May 21, 2012 1:38 am
Re: Warm Start Settings
The first things to look at would be the cranking enrichment settings and the warm up enrichment. Both of these are temperature dependent.
Last edited by gtmdriver on Sun Sep 11, 2016 10:49 am, edited 1 time in total.
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Re: Warm Start Settings
WOT normally in gauges flood clear, where it shuts off fuel, you can see that with TS open and car not running but ignition on, put your foot down and you should see it pop up on the lower of the TS where the little tabs are for things like fuel pump ect? see if its coming on, as it would mean rich if it starts when your doing that?
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- Posts: 39
- Joined: Sat Sep 19, 2015 10:31 am
Re: Warm Start Settings
Next time I'm out I'll check the starting status immediately that I stop and then at intervals to see if there's a change somewhere in the process.
- Piledriver
- Moderator
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Re: Warm Start Settings
Most of the time hard hot starts are due to way too much fuel, cranking, ASE, WUE or all of the above.
(assuming no vapor lock issues, which are rare if the fuel system is setup.
Depending on firmware there is also a cranking taper option that will cut back fuel% after a couple seconds cranking.
The MS defaults are for a small block Cheby and are WAY too rich, basically if the engine is still reasonably warm to the touch, zero enrichment is about right, at least if you are using the stock injector locations.
(assuming no vapor lock issues, which are rare if the fuel system is setup.
Depending on firmware there is also a cranking taper option that will cut back fuel% after a couple seconds cranking.
The MS defaults are for a small block Cheby and are WAY too rich, basically if the engine is still reasonably warm to the touch, zero enrichment is about right, at least if you are using the stock injector locations.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
- kangaboy
- Posts: 1034
- Joined: Wed Jan 22, 2003 12:01 am
Re: Warm Start Settings
My warm start issue was related to my super hot IATs. I had my intake down too low. In fact it was under the apron...so it was just sucking in the hot exhaust air. Anyway, I cut a hole in the tinware and mounted my air intake in the upper engine compartment. That helped solve that little issue.