Question about 1983 Yamaha XJ 650

2 Answers

Battery light on and firing on three cylinders

I just bought a 1983 Yamaha Seca 750 or xj750. The bike has been sitting for a year before I bought it. The battery had a little life in it but not enough to turn it over very fast. I power washed all the dust off and then parked it in my garage for 24 hours with trickle charge on it. I just put some fresh gas in it and it started fairly quick but seem slugish when reving it. I felt the exhaust pipes and three are hot and the one on the far left is cold. I also have a warning light on the instrument cluster that says the battery is not being charged. Any things that are common for these problems or am I in a search and check. I checked for spark and it does not spark. is there separate coils for each cylinder. I also checked fuses under seat all look good. any help is appreciated
thanks

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 8 Answers

First the bike was sitting because the owner left it sitting at storage unit and did not pay bill. New plugs and little running time for new gas to get through system took care of running on three cylinders bike now runs and starts perfect although I don't have the plates to be able to run it on the road yet. The battery holds a charge fine but I have a battery light on. I checked voltage at battery not running 12.27 then running idle 14.2 then at 2000 rpms or so 15.3 seems high to me so I bought a used regulator on ebay (cheap $10) put in and now idle 13.7 and 2000 rpms 14.5 but I still have a battery light on. Is the regulator still bad or should I be looking for something else?

Posted on Jun 11, 2009

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Contributor
  • 47 Answers

Ah the old 5G2 nice bike.

if sat around for a year the battery will be shot, so it will not take a charge or hold it, that may be why the warning light.

after a year idle the carb jets will gunge up,

might you have no spark because the battery is so flat?

a year laid up... why.? did it have a fault then? carb diaphragms don't like being laid up, nor carb slides, one may be stuck in the old petrol residue.

think I'd be tempted to try a new battery, and if not charging, the regulator probably packed up, beware though, a shot regulator can feed ac through to the battery rather than DC, and it will bust your new battery. loads of people fall for that one.

Posted on May 10, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My neutral light stays on even when in gear. It's a 1982 Yamaha xj750j maxim. I can't seem to locate the neutral switch to check it


Hi, Yardawg it may be the neutral switch or a grounded circuit sorry you can't find the first and best tool you ever bought for your Yamaha despair not, for a mere $9 you can download another one. For more information about your issue and free valuable downloads that you will need please visit the websites below. Good luck and have a nice day.
82 xj 750 thinks its always in neutral
1982 Yamaha xj750j maxim neutral light switch location Google Search https://www.tradebit.com/filedetail.php/6919269-download-now-yamaha-xj750-xj-750-seca
Yamaha XJ750 Maxim

Feb 27, 2016 | Yamaha Motorcycles

3 Answers

What other items need to be changed after 10 year dry storage on 1981 yamaha seca


I would be aware the fork oil seals can start leaking after it gets used, I bought a CB 750, owner said fork seals were good lol not even ridden it and the right one started weeing out oil, ME PERSONALLY WOULD TAKE IT FOR SHORT RUNS LOCALLY AND WAIT AND SEE the brakes on these were a bit odd, is it cable to master cyclinder, I have a 750 seca, nice bike right till the drunken heffer 3½ times over the limit stuffed me in the front on my side of the road. fork seals are easy to do

Apr 26, 2014 | 1981 Yamaha-1983 Xj550 Xj 550 Maxim Seca...

1 Answer

What is the firing order on xj 750 seca


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
firing order help me
1983 yamaha maxim firing order Club Chopper Forums
Yamaha XJ750 Owner Manual Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xj-owners-manuals

Dec 05, 2012 | Yamaha Motorcycles

1 Answer

1983 Yamaha xj750 oil capacity


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
How to Change the Oil on Yamaha Midnight Maxim 750 eHow
1982 Yamaha 750 Maxim Oil Change with middle gear drain plug location
Yamaha XJ750 Owner Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xj-owners-manuals

Mar 23, 2012 | 1983 Yamaha XS 400 L Maxim

1 Answer

Could you please show me a 1981 yamaha xj750 seca fusebox diagram or an electrical manaul? please.


Hi, 11545 for this scenario you will need your service/owners manual if you can not find the best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below and for more specific information or questions at no charge please feel free to contact me at xlch@mail.com. Good luck and have a wonderful day. 1981 yamaha xj750 seca fuse box diagram Google Search
HOW TO Install an aftermarket fuse box
Yamaha XJ750 Owner Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xj-owners-manuals

May 05, 2011 | 1982 Yamaha Xj750 Xj 750 Y140 Maxim Air...

1 Answer

Hi there i need a repair manual for a 1981 yamaha seca 750 or XJ 750 please.


http://www.repairmanualclub.com/motomanuals/
Take look here if you want a hard copy call the guys at C.C. Motorsports Corpus Christi Tx
They can hook you up with the goodies you need
They have a seca turbo in the shop really cool bikes
Mark

Feb 21, 2010 | 1983 Yamaha XJ 650

1 Answer

1983 Yamaha Seca 750 no spark


Check the battery should be 12V or more , Then check the coils the connections are under the gas tank make sure they are securely connected.
What kind of fuse box do you have? The glass fuses? Or did you replace the fuse box. If it is the glass fuses you need to replace with a new fuse box.
Check the kill switch and the side stand switch.
Check the coils too..

Oct 04, 2009 | 1983 Yamaha XJ 650

2 Answers

1982 XJ650 Seca wiring diagram


Autozone may have the manual for your specific bike.

Oct 01, 2009 | 1982 Yamaha XJ 650

1 Answer

1981 Yamaha XJ750 Seca Trouble Starting it


Battery conections need to be checked even the ground wire.

Sep 30, 2009 | 1981 Yamaha XJ 650

Not finding what you are looking for?
1983 Yamaha XJ 650 Logo

359 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers

Tony

Level 3 Expert

2600 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...