Ask Yamadad4? - Page 25 - Snowmobile Forum: Your #1 Snowmobile Forum
http://www.snowmobileforum.com
Go Back   Snowmobile Forum: Your #1 Snowmobile Forum > Specific Snowmobile Forums > Yamaha Snowmobiles


» Sponsors





Reply
 
LinkBack Thread Tools Display Modes
Old 02-05-2013, 07:24 AM   #481 (permalink)
-LIFETIME MEMBER-
 
Join Date: Nov 2009
Posts: 5,019
Quote:
Originally Posted by Silentmisfit View Post
that is having the lines unhooked from the carbs and no fuel when i pull it over, once i clean the carbs it takes about 15 minutes of using starting fluid to basically fill the bowls.checked filter in a tank and line from tank,no problems there.just seems weird to have no fuel trickle or flow from pump lines,but yet i can get it to run once i finally get the bowls full,it will start with choke after that but low end is weak but higher rpms is fine...cold or hot.
remove the pulse line from the fuel pump, hold your thumb over it and have someone pull the rope. see what kind of suction you get.

from there, you can always open up the fuel pump and clean it or simply replace it to rule it out.
yamadad4 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-05-2013, 03:12 PM   #482 (permalink)
Registered User
 
Join Date: Jan 2013
Location: Regina
Posts: 137
I am going to look at a 2004 Viper with Bender pipes on it. Do they have any heating issues with those pipes on?
Kelly15 is offline   Reply With Quote
Old 02-05-2013, 09:10 PM   #483 (permalink)
-LIFETIME MEMBER-
 
Join Date: Nov 2009
Posts: 5,019
as long as it has the rear heat exchanger in place you shouldnt have any cooling issues, snow dependent. mtn vipers had this cooler, shorties sometimes didnt.
yamadad4 is offline   Reply With Quote
Old 02-07-2013, 06:18 PM   #484 (permalink)
Registered User
 
Join Date: Jan 2013
Location: Regina
Posts: 137
Thanks for all your help in the last few months with my Vmax, then with all the info on the yamaha tripples, and today with my viper. I can not wait to take that machine out and see what it can do. What a big diffrence from my vmax. Is there anything I can do to show my gratitude?
Kelly15 is offline   Reply With Quote
Old 02-09-2013, 01:01 PM   #485 (permalink)
Registered User
 
Join Date: Jan 2013
Location: ny
Posts: 18
ok so it apparently was the fuel pump sled is running pretty dang nice minus a hesitation from stop to WOT.im pretty sure its the air screw but i cant remember which way to adjust and the only way to adjust is to pull carbs off everytime i wanna try lol.is it in for richer or out?
Silentmisfit is offline   Reply With Quote
Old 02-09-2013, 03:59 PM   #486 (permalink)
Super Moderator
 
RJ Gleason's Avatar
 
Join Date: Feb 2005
Location: Groton NY
Posts: 32,285
In is richer.
__________________
Old Cat Rider
'93 Wildcat 700EFI
w/ Comet 108 Pro-4 clutch & 01 ZR skid

'90 Wildcat Project in progress.

Vintage (sorta)
1980 Indy Trail 440 (for sale)
1980 AC Pantera (donor engine to the 90 wildcat)


http://www.dcdrifters.net/


Worshipful Master; F&AM Dryden Lodge# 472
http://www.masonicdryden472.org/

Rules of this forum are strictly enforced!
RJ Gleason is offline   Reply With Quote
Old 02-09-2013, 09:49 PM   #487 (permalink)
Registered User
 
Join Date: Feb 2013
Location: Massachusetts
Posts: 2
Phazer Throttle Issue

I have two Phazers one is an 89 and the other a 91 Phazer 2. I am experiencing the same problem with both sleds. Both sleds start fine and idle great but when I open the throttle up they lack power. One of the sleds won't go over 35mph at full throttle and the other is lucky if it reaches 20mph.

Both Carbs were rebuilt last year and I have had the isse ever since, I tried adjusting them with little luck any help would be greatly appreciated. I am not a motor head I am a computer geek. Give me PC and I will make it sing but give me a motor and watch it cry.
rgalloni is offline   Reply With Quote
Old 02-09-2013, 10:32 PM   #488 (permalink)
Super Moderator
 
RJ Gleason's Avatar
 
Join Date: Feb 2005
Location: Groton NY
Posts: 32,285
Go to the Tech section and look in the "how to" sticky and there is a tutorial on carb cleaning.
__________________
Old Cat Rider
'93 Wildcat 700EFI
w/ Comet 108 Pro-4 clutch & 01 ZR skid

'90 Wildcat Project in progress.

Vintage (sorta)
1980 Indy Trail 440 (for sale)
1980 AC Pantera (donor engine to the 90 wildcat)


http://www.dcdrifters.net/


Worshipful Master; F&AM Dryden Lodge# 472
http://www.masonicdryden472.org/

Rules of this forum are strictly enforced!
RJ Gleason is offline   Reply With Quote
Old 02-10-2013, 07:51 PM   #489 (permalink)
-LIFETIME MEMBER-
 
Join Date: Nov 2009
Posts: 5,019
Quote:
Originally Posted by rgalloni View Post
I have two Phazers one is an 89 and the other a 91 Phazer 2. I am experiencing the same problem with both sleds. Both sleds start fine and idle great but when I open the throttle up they lack power. One of the sleds won't go over 35mph at full throttle and the other is lucky if it reaches 20mph.

Both Carbs were rebuilt last year and I have had the isse ever since, I tried adjusting them with little luck any help would be greatly appreciated. I am not a motor head I am a computer geek. Give me PC and I will make it sing but give me a motor and watch it cry.
even though they were serviced last year, depending on your fuel choice, it wont take but a few weeks for them to garbage back up, especially with lack of use.

from there, depending on who did the work, its not uncommon to miss some areas or mis-adjust some things.

yours sounds like either the choke cables or a blockage in the carbs. assuming the clutches are doing there jobs.

being that your a pc guy, eye for detail and following direction shouldnt be an issue. make you a motor head in no time if your not opposed to dirty fingers and bloody knuckles.
yamadad4 is offline   Reply With Quote
Old 02-11-2013, 05:39 PM   #490 (permalink)
Registered User
 
Join Date: Feb 2013
Location: Massachusetts
Posts: 2
Thanks I pulled one of the carbs yesterday and I am going to go through it again. I didn't consider the choke adjustment so I will take a look at that as well.

Dirty bloody hands are not an issue.
rgalloni is offline   Reply With Quote
Old 02-12-2013, 02:33 PM   #491 (permalink)
Registered User
 
Join Date: Jan 2012
Posts: 9
Throttle sticking...

Hey Yamadad4! I posted this earlier and got a little info but saw you and figured I'd ask you if you have any other thoughts on it. I have a 97 Mountain Max 700 Triple and out of the blue my throttle started sticking--sometimes at high speeds but mostly at low speeds. It doesn't kick all the way back down to idle or "closed." I lubed it all over on the trail and it helped a bit. Lubed the cables etc. Pulled them out and the carbs are still sticking on the bench. One guy on here mentioned the needles or the slides being bent. I can pull all that apart tonite and check those. But what about the return spring sticking on something or the connecting rods between the carbs where they go into and attach to the carbs? Any chance of that connection getting hung up inside?

The other thing is if I pull the rack apart what should I keep an eye out for?

Thanks so much!
Chappy78 is offline   Reply With Quote
Old 02-12-2013, 08:08 PM   #492 (permalink)
-LIFETIME MEMBER-
 
Join Date: Nov 2009
Posts: 5,019
Quote:
Originally Posted by Chappy78 View Post
Hey Yamadad4! I posted this earlier and got a little info but saw you and figured I'd ask you if you have any other thoughts on it. I have a 97 Mountain Max 700 Triple and out of the blue my throttle started sticking--sometimes at high speeds but mostly at low speeds. It doesn't kick all the way back down to idle or "closed." I lubed it all over on the trail and it helped a bit. Lubed the cables etc. Pulled them out and the carbs are still sticking on the bench. One guy on here mentioned the needles or the slides being bent. I can pull all that apart tonite and check those. But what about the return spring sticking on something or the connecting rods between the carbs where they go into and attach to the carbs? Any chance of that connection getting hung up inside?

The other thing is if I pull the rack apart what should I keep an eye out for?

Thanks so much!
perhaps i should have read this first. i did respond to your post prior to reading this, lets take it from there.
yamadad4 is offline   Reply With Quote
Old 02-15-2013, 03:41 PM   #493 (permalink)
Registered User
 
Join Date: Feb 2013
Location: Canada
Posts: 1
Hey I have an 87 Bravo that was working fine until last week. I went for a ride and when I shut her off Im not sure if oil or water came out of the breather hose. Ever since then shes been sputtering and backfiring. I replaced the plug, put in some anti freeze, and the carb was supposed to be cleaned by a mechanic a couple of weeks ago but Im not sure if he cleaned it. Any ideas on whats wrong or where to start?
bbricketts is offline   Reply With Quote
Old 02-15-2013, 07:00 PM   #494 (permalink)
-LIFETIME MEMBER-
 
Join Date: Nov 2009
Posts: 5,019
little confused on that one, isnt your bravo fan cooled? where did you put the anti-freeze? which breather hose? the one for the fuel tank or the oil tank? noticable difference between water and oil, oil would have left a mess.

not uncommon for carbs to replug with todays fuel, or even a bit of bouncing while riding dislodging debris and having it stick somewhere in the carb. those little keihins are easy to clean, once out of the sled. i would start there.
yamadad4 is offline   Reply With Quote
Old 02-23-2013, 07:20 PM   #495 (permalink)
Registered User
 
Join Date: Dec 2008
Posts: 172
Hi Yamadad4, Took my 88 Enticer 340 ltr to Canada last week and it ran great most of the time. One day however, after 15 mile +- ride I shut it off for an hr or so. Then I realized I forgot my ax back where I had cut some wood. When I went to start it I had no spark. Towed it in, changed coil, still no spark. Got home today and took apart the kill switch and put back together, took cdi box out of holder(but didn't unplug) just to get the #rs. Repaired a tail light wire then gave a pull just to see and I had spark, ran fine all day using kill switch and pull starting. My problem is I'm afraid I may have an intermittent spark problem, where would you start?
Trapset is offline   Reply With Quote
Old 02-23-2013, 10:25 PM   #496 (permalink)
-LIFETIME MEMBER-
 
Join Date: Nov 2009
Posts: 5,019
i would start at the wires leading to the cdi from the mag and their connections. loose, rusted, corroded, etc i would check first. then inspect the wires closely for any fraying, pinches, or abnormalities. chances are when you wiggled the cdi off its mount you probably re-connected something or moved it enough to make contact.

work your way out from there. messing with the kill switch and its wires could have helped you as well. some of the flat pin plugs can have the tabs back out slightly so watch for that.

wouldnt think a bad tailight wire would affect the ignition, but you have several connections leading from the bars to the light.

lastly, check all your ground connections.
yamadad4 is offline   Reply With Quote
Old 02-24-2013, 10:52 AM   #497 (permalink)
Registered User
 
Join Date: Dec 2008
Posts: 172
Thanks Yamadad4, I ruled out the kill switch because during the breakdown I unplugged it and still had no spark. I didn't know then if it was a "open kill" or "closed kill" system but when I got it running yesterday I confirmed it will run\start w/ it unplugged. Also disconnected the tail light wire and as you predicted, I still had spark (at first I was happy to find that wire as I thought I had my smoking gun, but not so).

I will re check all the connections today. Assuming all is well with them would you think that intermittent spark problem is more likely caused by the stator or cdi box?
Trapset is offline   Reply With Quote
Old 02-24-2013, 04:50 PM   #498 (permalink)
-LIFETIME MEMBER-
 
Join Date: Nov 2009
Posts: 5,019
neither. both the stator and the cdi are typically a "go or no go" components. stator can sometimes work well when cold but drop power after a certain temp.

i would lean more towards a bad wire or connection. the fact you "played" around in there jostled something in the wiring or connections, returning your spark. i would rule these items out prior to considering the cdi or ignition, based on the information you provided.
yamadad4 is offline   Reply With Quote
Old 02-24-2013, 08:12 PM   #499 (permalink)
Registered User
 
Join Date: Dec 2008
Posts: 172
Thanks, looked over wires and started the sled several times today and all seems well.
Trapset is offline   Reply With Quote
Old 02-25-2013, 09:24 PM   #500 (permalink)
-LIFETIME MEMBER-
 
Join Date: Nov 2009
Posts: 5,019
if the connections are clean and theres no weird stuff with the wires like bare spots or meltage, enjoy.
yamadad4 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 05:20 AM.



Copyright SnowmobileForum.com

Search Engine Friendly URLs by vBSEO 3.6.0