82 xj550 Runs wierd when hot

Bike starts and runs fine, go on ride for thirty minutes and it seems to have "dead" spots in throttle and at a light the voltmeter sags to the point the indicators stop blinking. I this a rectifier issue?

Thanks for any help!

CP

 

Probably not.

And it's probably two different things. The throttle response problem is most likely directly carburetor-related; floats or sync--

and unless the carb issue is causing your rpms to drop below proper idle speed (1200rpm) the voltage drop is more likely a need to look at your alternator brushes.

 

thanks for the reply, i will look at the carbs first. by chance do you know where to direct me to find a fork bracket for the right side of the fairing?

 

was thinking the same thing

 

These folks: http://216.168.60.165/speedandsportinc/index.tpl have SOME of the bits, look in the fiche and then see what they might have. Be forewarned, they are aware of the value of NOS parts, don't get sticker shock.

Fiche: http://www.babbittsonline.com/pages/par ... fault.aspx

Otherwise eBay. I sold my fairing (with brackets) almost immediately after buying the bike. I like 'em "nekkid" (besides, Yamaha themselves called the fairing 'removable' and then did away with it for the '83 MY.)

 

thank for the replies, my son took it out today and got about 5mi. away from house and it died, jumped it rode for a mile died jump ride 1mi died all the way home any ideas where to start lookin? i am goin to search the alternator brushes, and the tachometer stopped working, def a project bike

 

looked up the alt brushes and will order set over weekend, seems a likely place to start.

 

checked alt brushes and they are fine lots left before the wear line, battery was at 36% by charger, charged it all day and put it back in bike will check it tom. see if batt is losing juice, if not start looking into igniter i guess

 

First off, you need to closely examine the alternator brush leads to ensure they are not corroded INSIDE. The little fine braids of wire can and will corrode from the inside; they might look OK but be nothing but green dust on the inside.

The next thing to check would be of course the fusebox; but then the big connector to the regulator/rectifier (the huge heatsink on the battery retainer piece.) Unplug it and inspect both sides' contacts for signs of corrosion.

Also check your battery cables, connectors, and all the connections on the starter solenoid.

I still think you have two problems, something electrical but fuel delivery as well. Will the bike idle at the prescribed 1200rpm?