Huggy Posted October 30, 2013 #1 Posted October 30, 2013 My question is this is the vacuum line from number 2 cylinder to the MAP a 2 piece line or a 1 piece line? I ask because the one on my 86 VR is 2 pieces joined/spliced together with a coupling of some sort.
Prairiehammer Posted October 30, 2013 #2 Posted October 30, 2013 My question is this is the vacuum line from number 2 cylinder to the MAP a 2 piece line or a 1 piece line? I ask because the one on my 86 VR is 2 pieces joined/spliced together with a coupling of some sort. The "coupling" is OEM. It appears to be a restriction meant to dampen the vacuum pulses from #2 intake.
Huggy Posted October 30, 2013 Author #3 Posted October 30, 2013 OK thanks, how difficult would this be to replace/repair if needed? They are not on the parts lists from Yamaha!
Prairiehammer Posted October 30, 2013 #4 Posted October 30, 2013 OK thanks, how difficult would this be to replace/repair if needed? They are not on the parts lists from Yamaha! Is yours missing? Or do you just feel it needs replaced? I don't think there is any moving parts, though there is an arrow to indicate proper orientation. The arrow should point toward the "Boost Sensor" (MAP). I am not certain, but I believe this is the part (#11): http://www.boats.net/parts/search/Yamaha/Motorcycle/1991/VENTURE%20ROYALE%20-%20XVZ1300DBC/AIR%20FILTER/parts.html 41R-14489-00-00 NOZZLE
dingy Posted October 30, 2013 #5 Posted October 30, 2013 You can get something very similar at Auto Zone. Made by Dorman. On the vacuum fitting rack. Gary.
Huggy Posted October 30, 2013 Author #7 Posted October 30, 2013 OK guys thanks for the feed back on my question regarding the the MAP vac hose. I have been having problems with getting my bike to run right since I rebuilt the carbs and did the valve shims. I was thinking maybe air leak on that hose. I went over to see Wizard765 today, he had some parts he had brought back for me from bongobobny's. Anyway we figured the problem was probably the TCI. He gave me a TCI he had and I installed it and no luck still had the same problem. But Wayne also lent me his TCI replacement that he got from dingy. I hooked it up and it worked!! Now all I need to do is get the carbs synced!!
dingy Posted October 30, 2013 #8 Posted October 30, 2013 Here is a picture of one I got from AutoZone. Gary
Huggy Posted October 31, 2013 Author #9 Posted October 31, 2013 Well dingy I'll be wanting one of your TCI's. That is definitely my problem. And the boss, aka wife, say's I can get it!!!
Huggy Posted October 31, 2013 Author #10 Posted October 31, 2013 Is yours missing? Or do you just feel it needs replaced? I don't think there is any moving parts, though there is an arrow to indicate proper orientation. The arrow should point toward the "Boost Sensor" (MAP). I am not certain, but I believe this is the part (#11): http://www.boats.net/parts/search/Yamaha/Motorcycle/1991/VENTURE%20ROYALE%20-%20XVZ1300DBC/AIR%20FILTER/parts.html 41R-14489-00-00 NOZZLE That's it but it does not say anything about a vacuum restricter in the line. It just shows a one piece hose. And I checked the listing for the 86 VR and its the same part.
bongobobny Posted October 31, 2013 #11 Posted October 31, 2013 Yes there is a vacuum restrictor in line with the "boost sensor" and then the vacuum tees off elsewhere. I'd have to run out to the garage to see where it goes but I'm thinking it goes to the YICS as well. Check your plastic YICS, it may have a seam leak...
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