What did you do to your Yamaha today?

Today. I worked... But then i got the starter on and got the seca started. It was a joyous moment but short lived one. It was only firing on 3 cylinders. It seems like one of the inner carbs isnt right. I opened the bowl screw no fuel came out.

 

Started her up this morning, sounds great.

 

I thought I made a mistake one time...... turned out I really didnt

 

My only mistake was thinking I made a mistake

 

I win

 

Spent my day being frustrated that number 3 cylinder isnt firing(not getting fuel) so i guess its time to take the carbs to church... Pray for me for i know not what i do.. This is going to be a learning experience, never done it before.

Yea as i walk through the valley of the shadow of carbs i will fear no tiny parts lord protect me from the crud and guide my carb cleaner let it spray true... Amen

 

Really not too hard. I was intimidated by it also. Don't rush, take pics and notes. Ask questions.
You got this.

 

I just put my Carburetors back on the bike the other day, it's easy once you get the hang of it just take your time and you will get it fixed. It is like most things a learning curve.

 

I will keep my carbs clean and ready. We will become part of each other. WE WILL…

 

Well i think i found a problem lol dont think that should be too pieces. I wonder if i can get it back in there

 

A knackered needle did it block the fuel flow off?

 

Sure did. No fuel to #3. Got it to set back in hope it stays

 

Yes Bmgalen it should not be in two pieces better getting a new one and check the float height after you fit it. I think the spring loaded pins on some aftermarket parts can be slightly longer or shorter so check the float height just to make sure it is within the specifications. If you were not getting fuel into that carburetor the top portion of the needle possibly stuck inside the jet. Once you do that open the drain screw of the float bowl after setting the fuel tap on the tank to prime if your bike has a vaccum pipe attached to the tank near the fuel line, just to make sure you are getting fuel to the carb. Then it will run on all four.

 

My advice is not to reuse that needle, even if you could glue it in place you would need to be sure the adhesive was not affected by Petrol. Not worth the hassle if you can get a new on cheap enough.

 

i think if he wonna to learn something is better that he glue it with some plastic glue cant be anything wrong.ok but must be needle in good condition.i think is good and nice filing when you do or fix something alone with help of your mind.i hope that you understand me ,im not soo good in english.

 

I understand you Andy555 but the reason I would not glue the needle back into it's housing is that if it fails and cuts the petrol off again it means another removal of the carburetor. And yes you are right it is very good when you can fix problems on bikes yourself. I always fix my bike it is the only way to learn how things work.

 

I started a conversation with chacal to find a new one. I might put this one back in till then. I dont have an airbox so it wasnt real hard to take off.

 

Yes that makes it easier. Going to contradict myself here but perhaps you could stick it with Araldite if it resists petrol?

 

aha ok ok,nice to hear,ehhehe

 

It is great to take a part off your bike and find the culprit that is causing the problems. Yes that is part of biking.

 

do you think that some sekund glue will not resist petrol,or some i dont know how you say in english glue for fixing gaskets.or plastic glue??

 

Andy I think Araldite would be most likely to resist petrol but the bike has no air box, must be pod filters so it will be easier to get the carburetors off again if the needle separates again. I would not use plastic glue on the needle and gasket cement is no use either. It is better to replace parts like the broken needle because it could break again far from home.

 

The viton tip just sits in place (light press fit, no adhesive). I've reused needles that have separated before. No bg deal, but buying new is better.

 

I didn't know that k-moe every day is a school day as my father used to say. That's good to know.

 

aha ,i didnt mean gasket cement i mean here we say hermetic is like ruber when gets hard.

k-moe nice to know ,good good

 

I hope it works fingers crossed.

 

I know what you meant now Andy your English is good.

 

As I am I the middle of rebuilding my xj700X I am curious as to what type of lubricant you used for the initial reassembly?
By the way your engine rebuild looks freakin amazing!

 

Well carbs are clean and back on.. Runs better than I've ever seen . Still not perfect but one step at a time.

 

Was a beautiful weekend here in Oregon, spent some time cleaning the top and bottom end of my engine. looking forward to receiving the parts this week to start the reassembly process. Hope everybody got out and rode their bikes.

 

Took my first ride of the year with the bike yesterday. Beautiful day for it. Sadly, it wasn't more than a half an hour of riding time, as I had too many things to finish before the end of the day.

 

pulled it out of the garage to find out someone unplugged my maintainer.... hoping either warranty is still good or it'll take a charge..

 

Dusting my bike off and going for a ride was "on the list" for this weekend.
Sadly it wasn't high enough up the list AND old Ma Nature decided that the weathermen were wrong about Sunday and she was going to be windy and wet. We did get all of our apple trees pruned, cut down some weed trees, the big tractor fired up and pulled some more junk out of the fields and most of the stove pipe cleaned out!

I wait.

 

Last weekend finally got Dakota back on the road (rear end grenaded when pinion nut backed off ) So finally changed oil in XJ , old oil still clear like honey , but it was last season oil. After sitting all winter just could not bear to think of riding with "old oil" lol this past Saturday rode around block a few times was still a little chilly 52 .

 

Got my wrist pins today yeah hah!
then my wife told me that was all. Sadly they were supposed to come with the replacement rings and exhaust gaskets.
Again frustrated with the company, when I was first informed that the wrist pins had to be made which I am thankful for I agreed to have all parts sent at one time being as I couldn't do anything with them anyways with out the wrist pins. Now I get to call them again to get this straightened out.
What I am having to remember is that this may be a large company and my order got lost in the shuffle. Trying to keep positive about it though.

 

Bunch of hooey. We have lots of them in stock. As well as the ring sets. And exhaust gaskets as far as the eye can see......

 

Got my carbs and shims from Hogfiddles! Got 3 of 4 shims corrected while waiting for the glue on my valve cover to dry. AND got my registration tag put on. What a headache!

 

Rebuilt my front forks. I've never opened forks before, and strongly suspect this was this bike's first time having it's forks rebuilt judging by what passed for oil inside them. Pretty sure I didn't break anything, either! Huzzah! Also swapped out the front wheel bearings, because I had a new set of sealed bearings kicking around.

 

Will be placing order later today I need more shims

 

Took my battery off the tender, checked levels (still good from when it was put on tender) dusted off the winter dust, checked tire pressure, put battery in, petcock to prime and enrichment wide open. Cranked, it was slow, paused, cranked again and she fired up! Idling at a nice purr with the enrichment wide open, blipped throttle and was treated with a nice rise and fall of rpm's, turned the enrichment down to about half, turned to get my riding gear on and she stopped.

Got my meter, battery was at 11.98, cranked and she dropped to 6.25. No riding today. Battery is 3 years old and obviously at its end of life. I bellowed a long loud moan*, 55F and sunny, poor me.


* well it was more like a string of cuss words.

 

Went to go for a ride around town. Didnt get far because of a run away idle. So now its parked again. Any idea of where i should start to fix this, could it be from float levels not set correctly?

 

Valves checked?

Taken the carbs to church recently?

Could be the fuel levels, have you checked them?

Synced the carbs?

 

Just cleaned the carbs this weekend. Pulled everything that i could remove from them and took notes. Did not have clear tubing so i didnt set the fuel levels. Going to do that tomorrow and probably check valve clearance this weekend. I have more reading to do on it i want to make sure i get the math right. As for sync i dont have a gauge im going to pester people too see if i can get my hands on one

 

Vaccum leak.

 

you can make a sync gauge for under 10$. could be a vacuum leak/carb joints at manifold or the throttle shaft seals.
How To: Make a 2 bottle synch tool

you can run an unlit propane torch around the joints to see if rpm goes up then at the throttle shaft seals to see if rpms go up.
then try carb cleaner if you get no results from propane.

How did you set your idle in the first place? this must be done when engine is warmed up completely then set idle to 1050 to 1200 rpm.

did you lube the throttle cable and is it run correctly cable could be sticking.

 

I dont think its the cable (new at the end of last season) but ill give it a lube and check, needs done anyway. If i turn the idle down it will come down a bit but still very high. Ill defiantly check for vacuum leaks, im beginning to second how good of a job i did with the carbs... I guess it wont kill me to have to get back in them.

 

Ill also poke around the forum and see if i can find how to make the sync gauge

 

this link
How To: Make a 2 bottle synch tool

 

Today is time to change head gasket,i hope that then i get engine in wright position.

 

A single vacuum gauge can be made to work , just a little harder about 20$ or less Autozone, Sears ,NAPA ....I have the 4 gauge set up ... Agree with Kmoe you may have a vacuum leak. You may need to replace butterfly seals ( This means "breaking the rack" to replace) if seals have not been done good chance this is where to look.