Announcement

Collapse
No announcement yet.

REAR PLUG dry black, front OK

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • #21
    Ok the needle float valve set . Check it for leaks

    Comment


    • #22
      ok, i did the svs cure, didnt seem to help, changed plugs, same. seems fluffy inconsistent low midrange, breaks up at high rpms.
      the rear 2 plugs have black on the metal rod part that comes out of the center ceramic , but not thick, , rest is all beige,

      Comment


      • #23
        im gonna go down to 37.5 on pms first. decide from there if i need to raise needle?

        Comment


        • #24
          the PMS is the adjustment screw on the bottom of the carb . Yours might have the brass cap still on it. That screw should be turned in all the way and then backed out 2 1/4 - 2 1/2 turns with a #40 pilot jet. the 37.5 that you are talking about is the pilot jet not the PMS. If that screw is turned out to the factory setting with a larger pilot jet you will be running rich in certain situations like at idle and pilot circuit.

          Comment


          • #25
            no, i have the knurled pms adjustment screw in place of oem brass , the pms and the pilot jet are the same circuit, right?
            it seems like it needs choke to start now , although it is 60 (cold) today. tonight i, gonna add a washer under the needle, see if it helps with wot. I never hit the rev limiter in all the years ive had 3 1700's, except when red light racing against really loud vtwins, i guess my mind knows when to shift, so i dont think its that.
            remember, i lowered the float level.

            Comment


            • #26
              The PMS is part of the pilot circuit. How many turns out is your knurled pms adjustment screw? All Roadstars that I have ever seen needs the choke pulled to start. Even after sitting for as little as an hour or so in warm weather They need it to start but can be pushed in almost immediately in warm weather after sitting for short periods and after a couple miles after sitting for long periods of time.

              Comment


              • #27
                close all the way shut, open till it runs good, , close til it lowers idle, open till it raises idle its highest, keep going till idle goes down, come back in between stumble lean, and stumble rich . i know, my other RS's need choke, i dont get it.
                the PO told me it was a race bike he took to the track, with this and that engine work done, , but all i found was really loud exhaust, and yamaha racing ignition, and non-mikuni jets, like he took it to the stealer for "performance package". there were no marks on any of the nuts that hold the heads on, so i think he was bullchipping, an older guy they call "poser"? wanna be ? im thinkin i had thew float too high, too rich, now i set he float to 4 mm above, carb on bike, on side stand, on a 2x4, which is way different then level carb on bench.

                Comment


                • #28
                  Set the pms between 2 1/4 and 2 1/2 turns out. Forget about that other method.

                  Comment


                  • #29
                    ok, i added a washer under, starts without choke 50 degrees out cold, still breaks up at wot, not as bad, smells like fumes. so there is a PILOT JET, AIR (2.0)

                    239-14172-20-00
                    under the top cover under the diaphram. that is correct part.
                    i think i need to check that all the other air jets on this carb are proper, the float bowl jets are proper, ill check the air jets also tomorrow.


                    yamaha lists a jET, MAIN (0.6) 3G2-14231-00-00 in the bowl also, that must be an air jet? or is that the starter jet, a blank?

                    Comment


                    • #30
                      The 2.0 under the cover is correct so is the 3G2-14231-00-00 that you list in the bowl. Starting with no choke is rich. You still haven't said how many turns out the PMS screw is? A 1/4 turn either way makes alot of difference.

                      Comment


                      • #31
                        yes it is very close to that , i have the Baron Pilot Mixture Adjustment Screw , when i set float , it seems not have enuf travel, even tho it measured 4 mm above rear left seam of carb with 1/8 tubing method. im pulling carb off bike this week. , gonna check all rubbers and brasses. i have a spare carb too. appreciate all your help.

                        Comment


                        • #32
                          Click image for larger version

Name:	51868881_10218410897292433_905469918785306624_n.jpg
Views:	4
Size:	39.6 KB
ID:	57537

                          Comment


                          • #33
                            Originally posted by roadiemort View Post

                            Comment

                            Latest Posts

                            Collapse

                            Topics Statistics Last Post
                            Started by roadiemort, 03-05-2018, 08:01 PM
                            3,680 responses
                            28,848 views
                            3 likes
                            Last Post roadiemort  
                            Started by Father Pobasturd, 31 minutes ago
                            1 response
                            9 views
                            0 likes
                            Last Post Questcap  
                            Started by Lifeguard, 4 days ago
                            14 responses
                            174 views
                            1 like
                            Last Post Horsehammerr  
                            Started by Jed Milhorne, 18 hours ago
                            4 responses
                            46 views
                            0 likes
                            Last Post NCB
                            by NCB
                             
                            Started by Chief_10Beers, 3 days ago
                            17 responses
                            185 views
                            0 likes
                            Last Post NCB
                            by NCB
                             
                            Started by Father Pobasturd, 7 hours ago
                            4 responses
                            44 views
                            0 likes
                            Last Post zingpow
                            by zingpow
                             
                            Started by zingpow, 13 hours ago
                            8 responses
                            112 views
                            1 like
                            Last Post zingpow
                            by zingpow
                             
                            Started by Smokescreens, 03-05-2018, 11:34 AM
                            206 responses
                            3,803 views
                            9 likes
                            Last Post Shores
                            by Shores
                             
                            Started by backinthesaddleagain, 13 hours ago
                            5 responses
                            53 views
                            0 likes
                            Last Post midnitmike  
                            Started by jjvw, 1 day ago
                            6 responses
                            71 views
                            0 likes
                            Last Post Doc_V
                            by Doc_V
                             
                            Started by backinthesaddleagain, 11 hours ago
                            1 response
                            42 views
                            0 likes
                            Last Post Doc_V
                            by Doc_V
                             
                            Started by jjvw, 1 day ago
                            5 responses
                            58 views
                            0 likes
                            Last Post jjvw
                            by jjvw
                             
                            Started by Txulrich, 09-05-2018, 08:23 AM
                            29 responses
                            358 views
                            0 likes
                            Last Post Txulrich  
                            Started by backinthesaddleagain, 12 hours ago
                            6 responses
                            26 views
                            0 likes
                            Last Post Doc_V
                            by Doc_V
                             
                            Started by FDRUCaptain, 06-24-2018, 07:50 PM
                            38 responses
                            540 views
                            0 likes
                            Last Post FDRUCaptain  
                            Started by blueverclear, 07-31-2018, 01:41 AM
                            16 responses
                            379 views
                            1 like
                            Last Post Jaybo
                            by Jaybo
                             
                            Started by Jaskin71, 3 weeks ago
                            22 responses
                            319 views
                            0 likes
                            Last Post MikeyC
                            by MikeyC
                             
                            Started by Lifeguard, 2 days ago
                            22 responses
                            168 views
                            0 likes
                            Last Post LDofDC
                            by LDofDC
                             
                            Started by Ratl, 1 day ago
                            7 responses
                            154 views
                            0 likes
                            Last Post TimB
                            by TimB
                             
                            Working...
                            X