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one step forward two steps back (Read 347 times)
justin_o_guy2
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What happened?

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Re: one step forward two steps back
Reply #15 - 03/15/09 at 11:46:53
 
Is there a chance the float is so low he cant get the fuel into the engine he needs to run higher RPM's?
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BurnPgh
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Re: one step forward two steps back
Reply #16 - 03/15/09 at 12:27:00
 
pretty sure its a rich condition. I just have no idea how. Stock carb that hasnt been messed with and a brand new air filter should be making me even more lean than last fall. I stuck a new plug in just to see. That made it even worse. I could ride it last night I just couldnt gun it or go over 50mph or so. With the new plug I could barely make it around the block today and the plug was instantly carbon fouled when I checked it. Im leaning back toward the petcock. Thats the only part of the fuel system I've changed. Last fall with vacuum fed I was golden. Now gravity fed and Ive got issues. Geuss I gotta scrape all the gray seal off the vacuum ports on the petcock and carb and try it again. I have a temper. Please fellow riders, wish me patience or i may kick the sob over and light it ablaze in frustration.
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Re: one step forward two steps back
Reply #17 - 03/15/09 at 19:16:48
 
BurnPgh wrote on 03/15/09 at 12:27:00:
pretty sure its a rich condition. I just have no idea how. Stock carb that hasnt been messed with and a brand new air filter should be making me even more lean than last fall. I stuck a new plug in just to see. That made it even worse. I could ride it last night I just couldnt gun it or go over 50mph or so. With the new plug I could barely make it around the block today and the plug was instantly carbon fouled when I checked it. Im leaning back toward the petcock. Thats the only part of the fuel system I've changed. Last fall with vacuum fed I was golden. Now gravity fed and Ive got issues. Geuss I gotta scrape all the gray seal off the vacuum ports on the petcock and carb and try it again. I have a temper. Please fellow riders, wish me patience or i may kick the sob over and light it ablaze in frustration.



Patience.....   and beer......

Here's a thought.....  with the new petcock on.... (did I read it was a Raptor petcock   Huh  ).  

1- Turn off the fuel.
2 - Drain some fuel out of the bowel.
3 - Put a clean plug in
4 - go for a short quick ride,  ..... you'll only get 1/4 mile or so, but that should be enough to see if the petcock is flooding the bike.....
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justin_o_guy2
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What happened?

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East Texas, 1/2 dallas/la.
Re: one step forward two steps back
Reply #18 - 03/15/09 at 23:19:48
 
I got REal Tired of going after the tools I threw & fixing the crap I broke, so I calmed down. I know a guy who rides a nice old Ducati, well, nice, except for the smashed in tank, where he slugged it to punish IT for not starting.. a daily reminder if his childishness. I think he keeps it to remind himself. Hes older, wiser & MUCH more mature now,,that was 25 years ago.
Anyway Burn, walk away, take a deep breath, plan your next move & IF the next move is a couple cold beers,, then get on with it!
Stay cool, dude.
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BurnPgh
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Re: one step forward two steps back
Reply #19 - 03/16/09 at 00:22:29
 
a short ride no doubt. Quick is the problem. Took the carb apart again tonight just to see. Triple thorough cleaning of every concievable part and surface. Not much improvement. Still can't get past 40 in 2nd without is sputtering and hesitating. Its 3am. Im going to bed.
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Re: one step forward two steps back
Reply #20 - 03/16/09 at 06:38:55
 
BurnPgh wrote on 03/13/09 at 20:13:01:
Seems after a few minutes at about half throttle the bike starts to sputter and wants to stall out.


BurnPgh wrote on 03/16/09 at 00:22:29:
Still can't get past 40 in 2nd without is sputtering and hesitating.


Let's be clear.  Are both of these statements still true? Or has the initial assessment turned out false?

I don't think the raptor petcock swap is at fault.  Provided the vacuum port is sealed off right, the carb can only either get enough fuel or be starved for fuel.  The only reason the stock vacuum petcock can cause flooding is if its diaphragm leaks, but the raptor doesn't have that.  The fouled plug indicates that it isn't being starved I think.

You seem to have ruled out a stuck float or slide, and I assume you inspected all the diaphragms in the carb while it has been apart.

Weak ignition is the only thing left on the clymer's plug condition chart for carbon fouled.  Check the ignition coil like markbacon suggested?  Don't give up!
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Re: one step forward two steps back
Reply #21 - 03/16/09 at 09:55:04
 
Did you check the carb boot for air leaks?
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Re: one step forward two steps back
Reply #22 - 03/16/09 at 10:53:05
 
moments as opposed to minutes wouldve been more accurate but yes both statements still ring true. No air leaks. The plug had good spark when i checked it.
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Re: one step forward two steps back
Reply #23 - 03/16/09 at 16:09:19
 
I decided to run without the air box cover off just to see. Problem solved. I cut down the big square "tube" under the seat to the air box by about 1/2 in and its all good. I don't know how considering I didnt have a problem last fall but it seems the seat was blocking airflow. gremlins. go figure.
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