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Old 11-22-2013, 12:43 PM   #1
Bamabrat   Bamabrat is offline
 
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Wont fire

Rode to work today w no issues. Sick, so went to leave at lunch. When I hit the starter, the bike had a pre-ignition pop then slowly cranked for 3 seconds before dying. Tried again. This time, no fire. The battery is strong, so that's not it. Spark plugs are connected well. Have tools so removed tank. Couldn't find a vacuum line loose or broken. I could hear a lit of air when I was trying to crank it.

Can't do anything now so leaving bike. This is my main mode of transportation. Any ideas are appreciated. Will come back tomorrow with several options (hopefully) on how to fix it.

Background: 2001 1500, 44k miles. Carb. stock intake (still have dual dog bowls). Cobra exhaust. Never had an issue starting. It doesn't like cold, but with choke, takes 4-5 mins or less to warm. Every now /then have a single pre ignition pop and smell fuel. been using 93 fuel and read a thread saying it could cause the pop. This tank, changed to 87. Have 90 miles on the tank. Normally fill up at 110 (I have the small 4 gallon tank). Avg mpg is 38. Every 4th tank, use an additive in fuel to remove Crap. Can't remember which.

Yesterday, replaced rear cylinder coolant/water pipe oring and used silicone to ensure no leak. It didn't on my way here. Also siliconed cam plug. Not leaking either. Removed tank, both bowls and plastic air tube to get to water pipe. Added coolant, brake fluid, and put gas back in tank. Ran like a champ this morning.

Any ideas please. I need some help guys. I live 1 hr away from my bikes current location

http://s1296.photobucket.com/albums/...psa3dd2905.mp4
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Last edited by Bamabrat; 11-22-2013 at 06:21 PM.
 
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Old 11-22-2013, 02:27 PM   #2
dank   dank is offline
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What do you mean by "no fire" the second time? Do you mean the gauges lit up and the motor cranked smoothly, but it didn't start? It cranked slowly again? Gauges lit up but it wouldn't crank at all? Gauges didn't come to life?
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Old 11-22-2013, 03:03 PM   #3
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You said the battery was strong. How do you know? I'd check the battery cable connections (both ends, tight and clean) and make sure the battery is "strong".
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Old 11-22-2013, 03:19 PM   #4
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Check the intake boot might have popped loose on backfire. just a thought .
 
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Old 11-22-2013, 03:16 PM   #5
cactusjack   cactusjack is offline
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It sure sounds like it's battery related to me. A vacuum leak wouldn't prevent it from cranking, not sure where you were heading with that. Make sure battery cables are clean and tight, and I don't care if you replaced the battery a week ago, have it checked.
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Old 11-22-2013, 05:02 PM   #6
Bamabrat   Bamabrat is offline
 
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I have a voltmeter plugged into my aux socket where I can see it. All of the guages lit up perfectly, and the engine turned over but wouldn't fire. I checked the battery, althought I've worked on wiring a lot lately and know it's clean and secured properly. i'm trying to upload a video to photobucket where you can hear it. Please stay tuned.
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Old 11-22-2013, 06:23 PM   #7
Bamabrat   Bamabrat is offline
 
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Update:

See 1st post for link to photobucket clip, then please tell me what you think. Thank you for the help
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Old 11-22-2013, 06:37 PM   #8
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Quote:
Originally Posted by Bamabrat View Post
See 1st post for link to photobucket clip, then please tell me what you think. Thank you for the help
I get a "video not found" error.
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Old 11-22-2013, 06:28 PM   #9
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I had the exact symptoms you describe when my battery died. I do not have a meter like you have (and wouldn't know what I'm looking at anyways), but other than the fact she wouldn't catch, everything seemed normal. The battery did not slow down even after several minutes of cranking. She'd spin the motor fine but apparently did not have enough volts (or is it amps) to do the deed. With a fresh battery she can't start fast enough now...a great feeling. That's all I got - hopefully somebody has a better answer for you but just for giggles, when you go back tomorrow, a fresh battery under one arm wouldn't hurt. Maybe you can pillage one off another ride tor testing purposes. Hell, take a car battery for that matter, to jump it if nothing else.
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Old 11-22-2013, 06:40 PM   #10
cactusjack   cactusjack is offline
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Try jump starting it.
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Old 11-22-2013, 07:20 PM   #11
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Check and listen to see if you can hear the fuel pump humming for a few seconds when you first turn on the key, If you don't hear it, the problem is most likely a worn ignition switch. Either take it apart and clean the stuck contact, or replace the switch.

Sometimes turning the key on and off briskly will make contact and you will hear the pump hum.
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Old 01-19-2014, 10:03 AM   #12
the vulc   the vulc is offline
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Quote:
Originally Posted by ringadingh View Post
Check and listen to see if you can hear the fuel pump humming for a few seconds when you first turn on the key, If you don't hear it, the problem is most likely a worn ignition switch. Either take it apart and clean the stuck contact, or replace the switch.

Sometimes turning the key on and off briskly will make contact and you will hear the pump hum.
His motorcycle is carbureted. Not FI
 
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Old 01-19-2014, 10:11 AM   #13
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Originally Posted by the vulc View Post
His motorcycle is carbureted. Not FI
Even the carbed nomads have a fuel pump. I have often wondered why but my 99 has one and all the years after if you check the parts lists.

And he has already checked out the pump.

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Old 11-22-2013, 07:38 PM   #14
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Sounds like it's cranking a little slow to me. What is your voltage meter reading while the starter is cranking? If it drops down to under 10 - 10.5 volts there may not be enough voltage to fire the coils to the spark plugs.
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Old 11-22-2013, 08:19 PM   #15
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Battery!
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