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Buell Motorcycle Forum » Old School Buell » Archives OSB 001 » Archive through January 24, 2005 » DDFI Cold starting? « Previous Next »

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X1tx
Posted on Monday, December 20, 2004 - 02:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Anyone know the secret to getting one of these DDFI bikes to start when it's cold? Running a 99 X1 with race ECM. Just had the TPS reset since it was so hard to start when it was cold. It's still hard to start. Ran the battery dead this morning trying to get it to fire. Hooked up a charger and finally got it to light off. Anything I need to check here?
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Uwgriz


Posted on Monday, December 20, 2004 - 02:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

For mine, I hold the throttle open about a 1/4 or so while I hit the starter and it pops right off.
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Buellkowski


Posted on Monday, December 20, 2004 - 03:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I usually let it crank over & pop a bit before opening the throttle so's not to confuse the ECM too much.
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Hootowl


Posted on Monday, December 20, 2004 - 04:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Was it hard to start before the TPS reset?

Mine doesn't like to start if I give it any throttle. If whoever set your TPS set the idle too high when they were done, that may cause the hard start problem. Try backing your idle down an eighth of a turn at a time.

A fresh set of plugs can also do wonders for cold starting problems.
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X1tx


Posted on Tuesday, December 21, 2004 - 08:19 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It was hard to start before the reset as well. Thought the reset would help but it didn't.
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Blackbelt


Posted on Tuesday, December 21, 2004 - 09:50 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

how many miles do you have on your plugs? check em, and clean or replace them w/ a new set.. hootowl is right they help a ton....
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X1tx


Posted on Tuesday, December 21, 2004 - 04:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Less than 5k miles on them. I'll probably stop and pick up a set on the way home. I'm thinking the battery is probably the biggest part of my problem.
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Blackbelt


Posted on Wednesday, December 22, 2004 - 09:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I might have to agree on the battery, if the plugs only have 5k on them...
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Crashm1
Posted on Friday, December 24, 2004 - 08:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My X1 is similar to yours and I didn't have any problems starting it till it hit 20 degrees, then crank times went up and I needed to hover over the throttle for a minute while the oil started to warm up. I haven't started it for about a month now. (I'm starting to hate winter) I'm tempted to see if it will start this morning.... it's 9 below out. Did I mention thinking of moving someplace warm?
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Rock
Posted on Friday, December 24, 2004 - 03:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)



From what you are describing about the hard-starting, it's probably the battery. The starter has got to spin the motor over pretty quickly. Since our bikes are FI, try not opening the throttle at all until the bike fires, then keep it running at just above idle for a short time; this procedure always works for me. One other thing; your machine should be idling at 1000 RPM or just a tick over on the tach. Idle speed out of spec could be causing some of this.

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