Not starting

So I just got an 82 xj750 for $500...it started but only poped and sputtered and died as soon as it was given any throttle... I thought a simple carb channing would do the trick... now it won't start at all.... this is the first bike carb(s) I have cleaned... my question is... is there any other things besides the carburetors that could be an issue? Or should I just have the carbs sent in to a professional?


Also this is my first time in a forum... so if I am asking something that has already been asked or doing something wronew please let me know..

 

no such thing as a simple cleaning. if its too cold that could be a problem.are you using the choke to get it started? do not hit the throttle

some light reading to start with
The Information Overload Hour

IN THE CHURCH OF CLEAN

THE SECRET LIFE OF CARBURETORS

Something New, Something Naked

if you want to get it right you have come to the correct place

free down load of service manuals you will need them
go to the first links listed site will be not in english but factory service manual and haynes manual will be
XJ750 manuals

 

Choke is on and I have tried with and without throttle... I have sparkand have gotten a backfire twice with flames... so I assume it is maybe flooding out?

 

try some starter fluid. how cold is it where the bike is stored?
if the choke (enrichment circuit pick up is plugged you will not get any gas for the motor using the choke.
the choke is not a real choke it is an enrichment circuit.

look at this thread
http://www.xjbikes.com/forums/threads/xj700-carb-bowl.82180/#post-498988

there is a tube that goes into hole in the wall of the carb bowl that is where the choke draws gas from

 

if you want someone to clean and fix your carbs we have a few people who do that at this site.

 

It's about 50 degrees in my shop.... just got it to fire after turning the fule off and using starting fluid.

 

What would it be looking at for cost to have that done?

 

I will let those who do it give you a quote.
Have you checked your oil level? you want to make sure your crank case is correct and not full of gas.
up on centerstand oil should be between lines on site glass..

can you tell us a little history of the bike?
my history is 10 to 14 years sitting out side bushes growing up and around it never heard it running.
I think you get the idea.

also is your battery fully charged if it drops below 9.5 volts when cranking bike is not going to start starter will still spin strong

also the pilot jet runs the bike until about 2k rpm that is when the main jets kick in

 

The guy I got it from said he had been riding it for about 5 years... said he parked it last July when he got a new bike that was bigger. Apparently it ran fine when he parked it. Then around the beginning of February he went to start it and it would only run with three choke on and die as soon as he gave it any gas. I used carb cleaner to clean the carbs the other night and ended up where I'm at now. I have had the bike less than a week and have not had much time to work on it yet.

 

Kevin,
Welcome to the camp. Read those links that XJ550H posted, it will enlighten you to what your future holds.

Spraying carb cleaner at your carbs will not make your bike reliable. Following through with a meticulous attention to detail will give you the sweetest ride on the block. Do not be intimidated by anything you read, people here have done it before and can talk you through it.

What you have is a very good bike that has been neglected by the PO, a little love, some time and a few $$$ and she will reward you in the power band range.

 

sounds very much like clogged pilot jets. it is a complete cleaning you want to do which is not hard . you big choice is if you want to break down the rack or not,
my bike was running when parked too

 

I think because I don't know much about bikes yet I may be ahead to let a professional do the work.... I want this to be a reliable bike and a main form of transportation. I still want to learn but I would rather it be on a bike that will be my daily rider. So another question.... would I be able to have a mechanic clean and synchroniz the carbs for under the $500 dollar range? Thankyou for all the help and advice so far... I am learning more about this bike every minute lol.

 

if you find one that was around working on xj bikes in the 80'S

contact member
hogfiddles
ask him about his carb services
click on his name above start a conversation

 

Ok... I was just wondering.... I have always Doon all the work on my car myself so I don't know the avrage cost of a mechanic.

 

If you do all the work on your car, you can do all of the work on your motorcycle.

 

+1.

Gary H.

 

Should i get a rebuild kit or should I just dissemble and clean everything. I assume they are the same as rebuilding a car carb. The main thing that makes me hesitate is the fact that there are four carburetors. I hear that they are hard to get back together if you disassemble them.

 

I found this kit on amazon...

4 Yamaha Xj 650 G H J K Maxim 1980 1981 1982 1983 Carb Rebuild Kits https://www.amazon.com/dp/B004MSJ8ZY/ref=cm_sw_r_other_awd_ij.YwbR6241AK

It looks like there should be more to a rebuild kit but like I said earlier I'm new to motorcycle carbs.

If this is not a good kit then can I get some advice on what to get?

 

Here are a few pictures I took the other day of the bike.

 

For the love of everything holy stop!

Ok, sit back and relax.
This site has everything you need, including access to the CORRECT parts and the best customer service ever.
Click on the XJ4Ever icon in the upper right hand corner of the web page, pick any of the threads, and click on the icon just to the left of the thread title.
A small window will pop up with "Chacal" at the top.
Click on the Start A Conversation link in the same small window.
Tell Chacal what you have and what you want to do.

From personal experience, trust and believe, you don't want or need to get parts from anywhere else.

Seriously:
http://www.xjbikes.com/forums/threads/chacal-parts.82733/

 

Good to know... thank you Stumplifter