• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Bike not starting

  • Thread starter Thread starter GSQC
  • Start date Start date
G

GSQC

Guest
My problem is as simple as complicated for me , Bike was running 3 months ago , now that I tried ty start it again it won't.

Fully charged the battery and try to crank it with starter (it spinning but not firing), with the kick the same result cheked the wires one by one with a test light four are not giving any sign of life.

I arrived to the conclusion that electricity do not reach the coils and it's the reason that it has no spark on any of the four cylinders, do you have and idea what could be the reason?

sorry for the mistakes, my english is not that great.

Any help with be hugely appreciated!
 
Well it seems that you have diagnosed the reason it won't start i.e. no spark so now we have to back track a bit. I am not fully familar with the 1977 750s but it has a "points" ignition which controls the coils which send the spark. Since there is no spark, the breakdown is somewhere between the coils and points or before the points themselves.

First off, with any electrical problem it is a good practice to make sure your fuses are all ok so check them.

The battery is good and it will spin the starter so we won't worry about that.

It is very unlikely that the coils themselves have both given up the ghost at the same time so I'd forget about them for now.

What we need to concentrate on are the points themselves and the electricity getting to them from the battery.

Do you know when the points were last changed? They will wear out over time and need to be replaced to function correctly. You should take a look at them and referring to the manual verify if they are still viable. Often the point faces become "corroded' and need a clean up with sandpaper or a points file to function so you could try that.

There will be some testing information in the manual too to check that voltage is getting to the points and from them to the coils so you will want to check those as well.

I am thinking that it is the points so have a close look at those and let us know what you find.

Good luck with it.
Spyug
 
GSQC said:
...
.....
I arrived to the conclusion that electricity do not reach the coils and it's the reason that it has no spark on any of the four cylinders, do you have and idea what could be the reason?
..
Click to expand...

DO you have a voltmeter?

If you have a volt meter you could check to see if have voltage to the coils.

Your english is just as good as some of the others on here (and your spelling better than mine sometimes).

Tell us more what you find.

You are 17 years old?

Dave
 
Last edited:
Are you pulling in the clutch handle ? If it hasn't been disabled the bike wont start without pulling it in. Good luck
 
I'd check to see if the plugs are getting fire. To do this, just pull one of the plugs. Replace pulled plug to the ignition wire and lay it on the head. Do not hold it or thouch it. Hit the start button and look to see if the plug is shooting a spark.
 
I just turned 18 not long ago, as for the kill switch or clutch handle always cheked them before any attempt on starting the bike!

I have a test light , and I am suppose to buy a voltmeter this week so I can start runing the major cheks that bassCliff posted.

As for voltage to the coils they are maybe getting some voltage but too weak to reach any of the plugs

If the points are my problem can I change them to electronic ingintion ?
 
If the points are my problem can I change them to electronic ingintion ?
Click to expand...

I believe you can go with the Dynatek "S" ignition or Boyer Bransden has one too. Look up their websites and read over the info. Not cheap but a good reliable fix to the issue of points.

I hope you can sort it out without having to shell out the big bucks.

Good luck with it.
Spyug
 
You must log in or register to reply here.
Back
Top