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EBL flooding during cold cranking...

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Old Oct 22, 2017 | 07:50 PM
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Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
EBL flooding during cold cranking...

Hey guys, im having an issue with my 383 flooding like a sumbitch when its cold. its gotten so bad ive had to change the oil. it seems to only happen when its cranking. Here's a pic of my crank tables. do these look off to you guys?
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Old Oct 23, 2017 | 08:58 AM
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From: Chasing Electrons
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Re: EBL flooding during cold cranking...

The choke tables aren't used during cranking. Just the VE table and the three crank tables shown. The crank PW multiplier table is for the crank->start->run transition. So no need to change it (for this issue).

The crank prime PW table doesn't look too rich. But then again I don't know what ambient temperatures we are talking about. That table can be zeroed if desired.

Which leaves the crank AFR table. Increase the AFR in those areas where it floods on a cold crank.

Note that holding the go-pedal on the floor during cranking is a clear flood mode.

RBob.
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Old Oct 23, 2017 | 01:07 PM
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robertfrank's Avatar
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From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
Re: EBL flooding during cold cranking...

I live in Utah so right now it's starting to get into the 40's and 50's so it's getting chilly.
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Old Oct 23, 2017 | 03:24 PM
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: EBL flooding during cold cranking...

That is in the 4° to 10° C range. Lean the cranking AFR starting with say .75 AFR higher and taper into the real cold area. Note that sooner or later it can get lean enough that it may not start. So be aware of that (just back up a tune/BIN).

RBob.
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