Minimum Cranking Voltage?

For discussing MicroSquirt (TM) configuration and tuning of fuel parameters (including idle valves, etc.).
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squirrelgripper
MegaSquirt Newbie
Posts: 1
Joined: Sun May 02, 2004 5:58 pm
Location: Little Rock, AR

Minimum Cranking Voltage?

Post by squirrelgripper »

I'm in the process of trying to get a MSnS initial install up and running.

It's been a cold week and my cranking voltage is reading as low as 9 or 10V. I can't get the car to start, or idle. This may sound like a dumb question, but what's the minimum voltage that the injectors will open at?
LRoy12
MegaSquirt Newbie
Posts: 19
Joined: Thu Oct 06, 2005 6:16 am

Post by LRoy12 »

i think the manual says 10v as a general minimum.. however if you bat is giving you voltages that lwo it might be a good idea to recharge it.
bobnova
MegaSquirt Newbie
Posts: 9
Joined: Wed Oct 19, 2005 9:45 pm

Post by bobnova »

Electronic ignitions tend to stop working at roughly 9.4 volts, injectors i really don't know.

You should have quite a bit more then that though, if thats a fully charged battery your using, i would consider buying a new larger one.

It should be able to keep 11 (or very close) volts during cranking.
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