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Showing results for tags '1&2'.
Found 3 results
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I've gotten to the point of reading the carbtune for the 1st time on my 91 VR. My instructions says to bring carb 1 & 2 to an even level then the same 3 & 4, then sync up 1&2 with 3&4. Well I got 1&2 evened out at around 27/33 and 3&4 to around 40. That could be the reason why my mileage was so bad. The carbs probably nevers been synced sinced left the dealers lot it only has 6700 miles on it. So I now have 1&2 pretty even with 3&4. Is the reading supposed to be pretty steady or is it supposed to bounce with about 6 units of variance? So right now all 4 are bouncing between 28 low and 34 high.
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Just did my 1st carb sync with my Morgan Carbtune. WoW! When I first hooked up and did initial readings, 1&2 were slightly off, 3&4 were slightly off, and both were slightly off from each other. I first thought that this was a waste of time as all were fairly close to each other, but "what the Hey" I'd bought the Carbtune and might as well try. I tweaked and tweaked and tweaked, and then I balanced 1&2 to 3&4. Even the idle smoothed out. When I ran the bike the difference was obvious-even the rumble/backfire was considerably reduced (looks like next job is the AIS). The job went smoothly thanks to the great instructions from Freebird and Kbran. Isn't this forum great!!!
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just finished clean and rebuild carbs 83 xvz12t, all new gaskets and orings, started rough but smoothed out when warm. during sync 1&2 come together good, 3&4 close but wont stabalize with each other. 3&4 much higher vacum than 1&2, and while trying to bring together, idle gets to low, and have maxed out idle adjust up to screw limit also notice that vacum sliders in bores 1&2 respone well, and vibrate with idle vacum. 4 barely vibrates at idle, but starts to open with throttle, 3 doesn't even start to open until even more throttle. rubbers diaphrams had no holes during cleaning any suggestions short of carb removal and teardown again history, got this bike 3 months ago in very rough shape-planned winter project. all kinds electrical problems-fixed, carbs and gas tank seriously coated in rust-tank cleaned,repaired and por15'd did i miss a vacum jet in carbs 3&4? which jet and can i spray carb cleaner stiil onbike? thanks for any input brian
