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Subject:Hard starting when cold 2.1 WBX
Date:Tue, 15 Nov 2011 06:18:15 +0000

It's easier to post than go outside and actually work on this -- it's expected to get close to freezing tonight!� (I know, some of you are laughing at me)� I haven't fully finished troubleshooting, but here goes anyway:

My relatively new-to-me stock 2.1 has trouble starting when cold but runs fine when warmed up.� I usually crank for 5-10 seconds, stop, and do it again.� I might have to do this 3 or 4 times before it actually starts.� When it does eventually start, it runs sort of OK for a few seconds, then slowly starts to miss more and more until it conks out.� Rinse and repeat.� I'm pretty familiar with how the Digifant FI is supposed to work and have checked the temperature 2 sensor and idle control systems, which appear to operate normally.� Idle switch clicks but I haven't checked for continuity yet.�� So what I see is that the FI gives an extra squirt of fuel for a bit, which eventually allows the engine to start once enough unburnt fuel is present, and as that fuel burns off and the FI leans the mixture, the engine dies.� Adding some quick start helps.

Once warmed for a minute or so, the engine runs fine at idle but dies under throttle until fully warm.

Suggestions?� How come the FI is not enriching the mixture enough?� Something else going on?

tabe johnson_90MV

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