Xj750 drilled out jets catastrophe

Actually . . . you don't have to break the rack to replace jets, adjust floats, "clunk" the slider piston ( a polishing term here) or service the Pilot jet & "O" ring.

You must break the rack to replace (8) throttle shaft seals and (6) fuel rail seals. You must re-sync a re-assembled rack. You should bench-sync anyway, in my opinion, as you never know what the previous person did.

And +1 on the valve lash check/adjust. You can make it step 3 or step 23 - - you decide.

 

Listen to the Old Coots! I did everything they told me and are telling you and it worked perfectly. I'm probably older than the Coots but have learned over the years to take advice from those who have first hand experience with the problem at hand.

 

I'm still trying to figure out why anyone still responds.

My brief XJ ownership has been a learning exp for me. When I ask what may or may not be a simple question, I listen to EVERYTHING someone that know s more about the subjec than me has to say about it. In may do it differently, I may take the advice verbatim, but nonetheless I accept whatever help comes my way respectfully, not because they are old coots but because they are willing to help.

 

Agreed. That kid is clearly being a negitive nançy. And I recync my carbs quite often on my bikes and tell my customers to have them checked often. I check them for free for my usuall customers. I love working on bikez so this stuff doesn't bother me. But having the right attitude has alot to do with it...

General on time/routine maintenance = A. A healthy happy bike. B. Prevents big problems down the road. Yamaha recommends its maintenance for a damn good reason, they built them! U should be happy you own a Yamaha and not a Honda, valves are to be checked around every 2500 miles. IV owned and worked on alot of bikes (American and Japan) and Yamaha makes the best son.

Btw the old timers always know best when it comes to mechanics so don't be bashing them for their expreience. U may get old one day to...if your bike doesn't fall apart while riding it and you die...

 

Ordered my jets 4 #126's and 4 #41's. Iinstalled them and they work just fine. No more lean condition,super crisp throttle response , no flat spotts or dieseling. TOLD you guys, at the end of the day the man who owns/rides the machine knows it the best.

 

From Bob Pirsig's "Zen and the Art of Motorcycle Maintenance" on the subject of "gumption traps" or those things that sap the enthusiasm:

"The next one is important. It's the internal gumption trap of ego. Ego isn't entirely separate from value rigidity but one of the many causes of it. If you have a high evaluation of yourself then your ability to recognise new facts is weakened.

Your ego isolates you from the Quality reality. When the facts show that you’ve just goofed, you’re not as likely to admit it. When false information makes you look good, you’re likely to believe it.

On any mechanical repair job ego comes in for rough treatment. You’re always being fooled, you’re always making mistakes, and a mechanic who has a big ego to defend is at a terrific disadvantage. If you know enough mechanics to think of them as a group, and your observations coincide with mine, I think you’ll agree that mechanics tend to be rather modest and quiet. There are exceptions but generally if they’re not quiet and modest at first, the work seems to make them that way.

And sceptical. Attentive, but sceptical. But not egotistic. There's no way to bullsh1t your way into looking good on a mechanical repair job, except with someone who doesn't know what you're doing.

.... I was going to say that the machine doesn't respond to your personality, but it DOES respond to your personality. It's just that the personality that it responds to is your real personality, the one that genuinely feels and reasons and acts, rather than any false, blown-up personality images your ego may conjure up. These false images are deflated so rapidly and completely you're bound to be very discouraged very soon if you've derived your gumption from ego rather than Quality.”

I have my money on the bike

 

Now that he's solved this problem, I'm assuming he won't be asking for any more help on carbs. - oh, and can one of the mods change his status to "master wizard"?

 

WIZARD? That must be why nobody answered any of my questions. Bexause they saw into the future and foretold that i would indeed fix it with out their help. :lol: :wink: Hope that doesn't look smug>

 

Oh, hands down. I'm not even betting. It's not a matter of if, it's just when. Wanna start a pool? Miles or months?

Excellent quote, by the way. You should happen by more often.

 

How sure are you that it's running perfectly? My bike ran perfectly when I got it. The PO had just gotten the carbs cleaned and the valves adjusted. I rode it for months with a huge grin on my face every time I grabbed a handful of throttle. This winter I decided that I was close enough to the next valve check that I should go ahead and do it before the next riding season. Cylinders 3 and 4 are both running lean, and the exhaust valves are 0.05 too tight on #3 and 0.10 tight on #4. That's with just over 2k miles since the last "service" that PO did. So......how well is your bike really running?

 

You're da man Polock! Way to save worlds-fastest's butt. He sounded really lost! You sure do know your stuff.

And generous of you to share you great wealth of knowledge with the unskilled and inexperienced. You're hopefully helping train the next generation of master wizards.

 

Hush, now. You're gonna screw up the pool. 8O

(Just wait for "bike starts fine cold, won't start once warm." Then the pool pays out.)

The shop that did the valves and carbs for your PO lied (or he did.)

 

no knowlage here pal, i just wore out the carb screws changing stuff till i got it and the super trapp muffler is what finally brought it in.
now Mr fast there has quite a different setup so i'am thinking maybe he exaggerated just a bit

 

Yeah, I know. It's just that Mr. Fastest is clearly involved way beyond his abilities here, and without people like you who are willing to help out, he'd be lost.

I suspect he won't thank you and the rest of the forum's true experts for spoon feeding him, but I will.

Thanks!!

 

I'm in, I will give it 4,573 miles.

 

I give it until mid-late march when temps start holding in the 40's to 50's.
Young pup will be back knowing just what he needs to do again.

And he still will not have done the basic maintenance that is required to keep the bike running properly.

Anyone wanna take odds on a part out come spring?

Ghost

 

I would like the side covers - as spares. Oh - and the signal lights too.

 

Yea see you guys are a bunch of jelly assholes. Your the reason why people hate forums. You guys can all go f*** yourselves. And your gay ass mint condition seca 500's f*** that thats a bitch bike.

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Just want to say Adios before your kicked off the site. You have a lot to learn young man. It's very obvious that you just not ready yet. Don't forget the brake upgrade, you'll want to be able to stop the worlds fastest XJ....

Good luck and be Safe...

 

Ok, I want to replace my bet to 3,450 miles.