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Old 12-17-2010, 04:50 PM   #1
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Default Please share your cranking fuel for 800cc injectors

Hey guys i've been having issues getting my car to start at anything under -10C temps. Gotta crank on it for ages. How much fuel are you guys running during cranking at sub 0 temps?

The crazy thing is it will only start at 4-5ms fuel. 5ms on 800cc injectors is crazy rich so it makes no sense to me.
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Old 12-17-2010, 05:04 PM   #2
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I have larger injectors and e85 but lemme just give you my 2 cents of advice:

don't use anyone elses settings.
Sure you can copy the shape of "curve" so you don't have to figure out settings for every temp change, what I did (obviously AFTER getting car to idle correctly and warm up correctly):

Start increasing fuel little by little and trying it over and over. It will take a bit of time, and will put a strain on the battery (get a charger or helper so you don't kill it).

When you get the car to start quickly then integrate that number into the "curve" and adjust higher and lower temps accordingly so you have a smooth slope with highest setting at max cold and lowest at warm.

Not sure if this is right or wrong, but it helped me, and car starts fairly good.
And I'm on e85 so you should be able to start WAY easier.

Also read the writeup on msextra about cranking fuel. Its very well written and easy to understand.
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