car wont start in freezing temps. help me out.

K-Series Programmable ECU installation questions / support issues
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skipbarber
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Joined: Wed Aug 13, 2008 6:40 am

car wont start in freezing temps. help me out.

Post by skipbarber »

Sort of vehicle i have and modifications: 2002 civic. D17a1 with vtec head swap w/crower stage 2 cam. RDX 410cc injectors, T3 super 60 turbo/intercooled. All stock sensors. return fuel conversion with aeromotive FPR set to stock pressure ~43-44psi. walbro high flow pump. stock block.

ECU: Kpro w/required cam gear.

Problem: So Ive had this problem since last year. When my car sits in freezing weather overnight, it will not start the following morning. it'll crank and backfire and sound like it wants to start, but wont. Last year I just setup my remote start to autostart it overnight every few hours. The car will otherwise run flawlessly. It will hiccup occassionally with hot restarts, but nothing serious. It'll start fine the rest of the year, and even now, freezing temps, if i get some help i can simply push start it. Im getting the impression that it's flooding. because when I DO get it started it stumbles and sputters and i get a pretty big cloud of black smoke. Ive tried adjusting the cranking fuel trim to no avail. It seemed to get a little better when it was set to -60, so I adjusted the fuel map accordingly. I have two buddies that live in my area with very similar setups in their cars and they dont have this problem. Infact my base map came from one of them. it doesnt really get below 10 degrees around here, and no one i know uses a block heater, but im seriously debating getting one if i cant solve this problem. any input? havent been able to datalog since this is a starting, not running, problem.
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'02 civic sohc turbo (D17a1.5) daily driver
'91 supra 3.0L turbo (7MGTE) track monster
Axix23
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Joined: Fri Sep 21, 2007 10:09 am

Post by Axix23 »

i say, trying messing with parameters, "Cranking base injector pulse" IN the lower ect, try lowering the fuel even more... That should help to not flood your engine when temps are colder...
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Hondata
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Post by Hondata »

Yes, reduce the injector duration in the cranking base injector pulse table rather than reducing the cranking fuel as a whole.
Hondata
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