Guest Jeeprogue Posted November 13, 2012 Share Posted November 13, 2012 Hello, im new to this forum and did do a little searching but couldn't find exactly what it was i was looking for. what i was hoping is that somebody could tell me how to adjust and sync my carburetors on my 83 V45 Interceptor. Thanks in advance for any help. Link to comment Share on other sites More sharing options...
Member Contributer gll429 Posted November 13, 2012 Member Contributer Share Posted November 13, 2012 step one..... download the manual step two.... buy or borrow and sync gauge set. step three... follow the manual is your bike idling rough? carb sync only effects the bike until maybe 1800 rpm.. if that. Link to comment Share on other sites More sharing options...
Guest Posted November 13, 2012 Share Posted November 13, 2012 ive downloaded the FSM, but never having done this before it is a little vague, and maybe my issue isn't the sync, but heres what it does, it often dies at idle, seems to idle way to low, hard starts when its cold, and the entire upper power band anything over 6-7k is compleatly gone, there is nothing its almost like it bogs down when it trys to go up there, any thoughts? Link to comment Share on other sites More sharing options...
Member Contributer YoshiHNS Posted November 13, 2012 Member Contributer Share Posted November 13, 2012 Start from scratch. Pull your plugs and check them for condition and proper gap. Check cylinders for compression. Take carbs apart and give them a good cleaning. Check your fuel filter and air filter. A carb sync helps to smooth the engine out, but it won't fix a poor running engine. Link to comment Share on other sites More sharing options...
Guest Posted November 16, 2012 Share Posted November 16, 2012 I hope this is okay to do. These should help out http://v4musclebike.com/forums/showthread.php?t=4900 and http://v4musclebike.com/forums/showthread.php?t=6622 If this is a problem, mods, let me know. Jim Link to comment Share on other sites More sharing options...
Member Contributer JETS Posted November 16, 2012 Member Contributer Share Posted November 16, 2012 Here is a really good bit of info that works well. http://www.factorypro.com/tech/carbtune,CV,high_rpm_engines.html Link to comment Share on other sites More sharing options...
Guest Posted November 17, 2012 Share Posted November 17, 2012 I have used an IR thermometer to measure the exhaust pipe temps to fine tune, it works well. Link to comment Share on other sites More sharing options...
squirrelman Posted November 25, 2012 Share Posted November 25, 2012 If your bike is running at all at idle you won't need to adjust any synch screw more than + or - 1/2 turn, usually less. Notice that carbs must be synched in an exact sequence and that each screw adjustment may slightly affect the vaccum on other carbs in the set. The throttle needs to be snapped a couple times after each screw adjustment to ensure that the linkages and butterflies have setteled into their new position. In your exact case i think that simply cleaning or replacing all your idle jets, along with a compressed air blowout of the hole under the idle mixture screw would be a good place to start. Link to comment Share on other sites More sharing options...
Member Contributer HiDesertMLB Posted November 25, 2012 Member Contributer Share Posted November 25, 2012 Lots of good point here, especially with YoshiYNS referring to checking the plugs and compression. I don't know how long you've had your Interceptor, but compression check should be done just to let you know the overall health of the top end. If the carbs are questionable, and if the bike was sitting for a long time, the Interceptor would benefit from pulling the carbs and giving a cleanout to the floatbowl innards.Pull the filter and blow through it? Is it free flowing? Is there crud in the tank- maybe flush with clean fuel and pull the petcock (replacing the gasket). I'm just saying this if the bike's storage and maintenance history is in doubt, otherwise, going straight for the sync won't accomplish much. You want to start out with a good basis of clean carbs, good spark, and known good compression. Once you get around to the sync, a homemade manometer can be made. I sync'd my 4th gen's carb a few years ago with good results from $15 worth of supplies. I used fork oil as the manometer's fluid: Good luck on getting your first gen up and running! Link to comment Share on other sites More sharing options...
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