Yamaha Discussions about Yamaha ATVs.

*Update #13 (not fixed) - ongoing throttle response problem with Raptor

Thread Tools
 
Search this Thread
 
  #31  
Old 03-10-2003 | 08:20 AM
garyc660R's Avatar
Elite Pro Rider
Joined: Jan 2000
Posts: 6,996
Likes: 0
Default *Update #7* - ongoing throttle response problem with Raptor

Originally posted by: sixsixT
Originally posted by: garyc660RIf you are around sea level, I would recommend 148-150 mains along with 1 setting leaner on the needles than what dynojet recommends (I think they recommended the 3rd slot from top and 4th cleared mine up perfect). Dyno-jet done all their testing with the lid on. The lid off creates mid range turbulence, so the needle change setting fixes this. Just try it.....the machine will respond better.
Going from the 3rd groove from the top too the 4th on the needle would be richer.
Thanks for clearing that up for me sixsixt......I meant DJ recommends 4th position and I went 1 setting leaner too the 3rd notch.
 
  #32  
Old 03-10-2003 | 08:30 AM
NotuRaptor2's Avatar
Thread Starter
|
Pro Rider
Joined: Aug 2001
Posts: 783
Likes: 0
Default *Update #7* - ongoing throttle response problem with Raptor

03Raptor,

I think it is just the idiot light which has not come on. I am not sure why the Raptor has two separate heat sensors though. One it at the bottom of the radiator and the other is at the top where the thermostat is located.

/NotuRaptor
 
  #33  
Old 03-10-2003 | 10:22 AM
sixsixT's Avatar
Extreme Pro Rider
Joined: May 2002
Posts: 3,286
Likes: 1
Default *Update #7* - ongoing throttle response problem with Raptor

Originally posted by: NotuRaptor2
03Raptor,

I think it is just the idiot light which has not come on. I am not sure why the Raptor has two separate heat sensors though. One it at the bottom of the radiator and the other is at the top where the thermostat is located.

/NotuRaptor
One is for the light and the other for the fan, I think.

Like RR1 said a quad to swap parts off of would be nice if you need to start checking for electrical problems.
 
  #34  
Old 03-11-2003 | 12:22 PM
garyc660R's Avatar
Elite Pro Rider
Joined: Jan 2000
Posts: 6,996
Likes: 0
Default *Update #7* - ongoing throttle response problem with Raptor

Well....what was the problem?
 
  #35  
Old 03-11-2003 | 07:06 PM
NotuRaptor2's Avatar
Thread Starter
|
Pro Rider
Joined: Aug 2001
Posts: 783
Likes: 0
Default *Update #7* - ongoing throttle response problem with Raptor

Gary,

Still don't know. I am hoping to go into the carbs tonight only because I don't know anyone with a Raptor that I can switch coil and/or CDI units. I think I am going to order a coil tomorrow just in case. I will definitely post the end solution. It is starting to look more like a 686 and 2002 gearset all the time though.

/NotuRaptor
 
  #36  
Old 03-15-2003 | 09:32 PM
sixsixT's Avatar
Extreme Pro Rider
Joined: May 2002
Posts: 3,286
Likes: 1
Default *Update #7* - ongoing throttle response problem with Raptor

Did you get it figured out?
 
  #37  
Old 03-15-2003 | 09:48 PM
NotuRaptor2's Avatar
Thread Starter
|
Pro Rider
Joined: Aug 2001
Posts: 783
Likes: 0
Default *Update #7* - ongoing throttle response problem with Raptor

Actually, I ended staying at work late every night this week. Today was a riding today (thank goodness I have a 400ex as a spare - I run the crap out of that thing everytime and it never fails.). I plan to look at the Raptor some tomorrow. I did order a new coil. Also made sure that it was not a clogged gas vent tube.

/NotuRaptor
 
  #38  
Old 03-17-2003 | 11:53 PM
NotuRaptor2's Avatar
Thread Starter
|
Pro Rider
Joined: Aug 2001
Posts: 783
Likes: 0
Default *Update #9* - ongoing throttle response problem with Raptor

Checked the carbs out and cleaned them. Didn't help at all. Waiting for the coil to arrive. If that doesn't fix it then most likely will try to find a CDI to test.

/NotuRaptor
 
  #39  
Old 03-18-2003 | 02:27 AM
mrbones's Avatar
Range Rover
Joined: Jun 2002
Posts: 169
Likes: 0
Default *Update #9* - ongoing throttle response problem with Raptor

Have you checked the choke cable as it enters the carb? Discovered mine is stripped out and won't seal properly causing an air leak and a poor throttle response and popping at mid throttle.
 
  #40  
Old 03-24-2003 | 04:21 PM
raptor630's Avatar
Trailblazer
Joined: Jan 2001
Posts: 26
Likes: 0
Default *Update #9* - ongoing throttle response problem with Raptor

Did you find out what was wrong. My raptor has similar symptoms but the midrange bog is constant no matter how long the bike has been ridden. I have experimented with the jetting until I am sick of it. I may try a larger pilot jet for the hell of it, but then I am gonna start looking at the electical system.
 


Quick Reply: *Update #13 (not fixed) - ongoing throttle response problem with Raptor



All times are GMT -5. The time now is 07:38 PM.