Yamaha 1200 Carb Catastrophe - Page 2 - PWC Forum: The best hang-out for Personal WaterCraft enthusiasts
Reply
 
LinkBack Thread Tools Display Modes
post #11 of 29 (permalink) Old 09-18-2019, 11:17 AM Thread Starter
Junior Member
 
aedan929's Avatar
 
Join Date: Sep 2019
Location: Evanston IL
Posts: 17
Yeah I thought my friends hosing suggestion was a bit false. Wish there was one sure answer but it just makes no sense to me that its not listed anywhere. I'll look for that vacuum next or the related. Feel like im so close and I have this badass relic of yamaha motors in my hands. This guy told me I should put it in a museum lol.

2001 Yamaha SUV 1200

Mods:
1.5 MM Overbore
aedan929 is offline  
Sponsored Links
Advertisement
 
post #12 of 29 (permalink) Old 09-18-2019, 02:20 PM
Senior Member
 
Dave in DE's Avatar
 
Join Date: Jul 2015
Location: slower lower Delaware,second home on lake Conesus in NY. keep a 93&94 vxr pro there.
Posts: 1,059
You'll get it. Just take your time and be patient. I have an 01 & 02 gpr. Both got torn down and gone over and are a blast to ride.
Dave in DE is offline  
post #13 of 29 (permalink) Old 09-18-2019, 06:22 PM
Super Moderator
 
rodsatheart's Avatar
 
Join Date: Oct 2014
Location: Mena, Ar.
Posts: 5,022
Dock
Patience Danielson. Lol
Try setting the mixture screws to spec and turn the idle screw out until the butterflies are all the way closed and try and start it. If there is a vaccum leak it should start. If it doesnt, turn the idle screw about 1 1/2 turns once it contacts the arm and start it. If it idles high, back it off some. Its possible the idle is set to high to compensate for the mixture screws or pop off being set wrong.
rodsatheart is online now  
Sponsored Links
Advertisement
 
post #14 of 29 (permalink) Old 09-18-2019, 10:10 PM Thread Starter
Junior Member
 
aedan929's Avatar
 
Join Date: Sep 2019
Location: Evanston IL
Posts: 17
Quote:
Originally Posted by Dave in DE View Post
You'll get it. Just take your time and be patient. I have an 01 & 02 gpr. Both got torn down and gone over and are a blast to ride.
Sounds awesome! Love working on old machines, you save so much money and you get to learn. Everything I own (except snowmobile) is used and has had some big issue which gave it a big discount and of course I've fixed it and made it like new. I most likely will never buy something new, I just don't like the way things are built these days.

2001 Yamaha SUV 1200

Mods:
1.5 MM Overbore
aedan929 is offline  
post #15 of 29 (permalink) Old 09-18-2019, 10:34 PM Thread Starter
Junior Member
 
aedan929's Avatar
 
Join Date: Sep 2019
Location: Evanston IL
Posts: 17
Yay!

Quote:
Originally Posted by rodsatheart View Post
Patience Danielson. Lol
Try setting the mixture screws to spec and turn the idle screw out until the butterflies are all the way closed and try and start it. If there is a vaccum leak it should start. If it doesnt, turn the idle screw about 1 1/2 turns once it contacts the arm and start it. If it idles high, back it off some. Its possible the idle is set to high to compensate for the mixture screws or pop off being set wrong.
Genius! Didn't start with idle all the way off, and a nice smooth idle once screwed in 1 1/2. Most likely forgot to reset idle screw after I attempted tuning on water. I guess now it's time to put er back on the water and see what I get with new gasket. Ill update y'all on saturday most likely. Y'all might disagree with me, and probably for good reason but after my years of experience working on engines, typically electrical and clutching, I have learned to stay away from gasket sealers and RTV. Now of course if I was too cheap to replace a beat up block that has nics on gasket surface then maybe I would use it, after all the times I've used it I leak oil and now compression. I'm not positive I found the solution but I'm keeping my fingers crossed. Wish my sorry a** good luck. lmao

Edit: Finally reading that guide too, might have to take carbs out one more time, having a hard time telling difference between dull silver and shiny silver.

2001 Yamaha SUV 1200

Mods:
1.5 MM Overbore

Last edited by aedan929; 09-18-2019 at 11:37 PM.
aedan929 is offline  
post #16 of 29 (permalink) Old 09-19-2019, 05:35 AM
Super Moderator
 
rodsatheart's Avatar
 
Join Date: Oct 2014
Location: Mena, Ar.
Posts: 5,022
Dock
If anything, your pop off is low, so it shouldn't be a big deal if it runs good. Glad you got it. Remember, your idle should be around 1100.
rodsatheart is online now  
post #17 of 29 (permalink) Old 09-19-2019, 10:46 AM Thread Starter
Junior Member
 
aedan929's Avatar
 
Join Date: Sep 2019
Location: Evanston IL
Posts: 17
Thanks! Made my own pop off tester but I’m not so sure of it’s accuracy. Just bought a Mikuni one. I believe my springs are “dull silver” so I’ll try that first and see what I get. And I would definitely agree that it’s too low, heard these Yamahas need higher pressure. Or they’re just tuned that way.

2001 Yamaha SUV 1200

Mods:
1.5 MM Overbore
aedan929 is offline  
post #18 of 29 (permalink) Old 09-19-2019, 05:47 PM
Senior Member
 
Dave in DE's Avatar
 
Join Date: Jul 2015
Location: slower lower Delaware,second home on lake Conesus in NY. keep a 93&94 vxr pro there.
Posts: 1,059
I rarely use rtv. If it's a paper gasket like the jug base, or carb. gasket I rub brg grease into it. it softens it to get a good seal and makes it come off real easy the next time. That's old school trick. Lol. now I'm showing my age, hehe.
Also the grease will stick it in place on vertical location.

Last edited by Dave in DE; 09-19-2019 at 06:27 PM.
Dave in DE is offline  
post #19 of 29 (permalink) Old 09-20-2019, 04:17 AM
Super Moderator
 
rodsatheart's Avatar
 
Join Date: Oct 2014
Location: Mena, Ar.
Posts: 5,022
Dock
They were running it high because of epa standards. I have seen where folks are running pop off on the 1200's in the range you have with no issues. If it's starting easy hot or cold, idles good, off idle acceleration is good, not running rich up to 1/4 throttle, I would leave it.
rodsatheart is online now  
post #20 of 29 (permalink) Old 09-20-2019, 09:38 AM Thread Starter
Junior Member
 
aedan929's Avatar
 
Join Date: Sep 2019
Location: Evanston IL
Posts: 17
Quote:
Originally Posted by Dave in DE View Post
I rarely use rtv. If it's a paper gasket like the jug base, or carb. gasket I rub brg grease into it. it softens it to get a good seal and makes it come off real easy the next time. That's old school trick. Lol. now I'm showing my age, hehe.
Also the grease will stick it in place on vertical location.

Thanks! I really like that idea and will totally try it out next time!
aedan929 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the PWC Forum: The best hang-out for Personal WaterCraft enthusiasts forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome