• 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.

Running on cylinders 1 and 4 help!

O

odl777

Forum Mentor
I have just got done rebuilding my bike installed a dyna s 2.2 dyna coils and pods jets and exausts. Tuned the bike up and was running great for about a couple of tanks of gas. About 3 days leter i ran out of gas iwas trying to pop another wheely as i did earlier and bam she died. looked in tank and was empty. went and filled her up and took her for a ride, ran great and than would bogg down. So i cleaned the carbs, plugs, switched out coils petcock and all tubes and jets. Started up great again and hauled ass. 10 min later she was bogging down again and running on only 2 cylinders 1 and 4.
Waited a while and started up again and was still only on 2 cylinders two middle ones cold. HELP! whats wrong with Suzy could it be my dyna S
 
Swap out the coils. If the problem switches to 1&4, you found it. If not, it could possibly be voltage to one coil is lower than the other - may want to check that out first.
 
Last edited:
This is an electrical problem. Get that multi-meter and connection cleaner spray out!

And stop doing wheelies! I would NEVER do a wheelie...8-[
 
Have you checked the connections on the coil that's not firing? I don't know about the DYNA ignition but the stock coils are supposed to be 3 ohm.
 
I am going to have to go with your coils. You say that you have the 2.2 ohm coils on the bike now. With your bike being a 1979 I am pretty sure you are going to need 5 ohm coils, due to that fact that your bike is points rather than electronic ignition.

I think what is going on is this, the bike runs great for the length of time for it to overheat the coils (not enough ohm's), once that happens they shut down untill they cool off again.

Get some 5 ohm coils and I think it will solve your problem.

Hope this helps.
 
Oops, misread that part. Sorry about that. Beyond that, it could be possibly your ignitor overheating or something of that sort. Unfortunatly that is beyond my knowledge. Hopefully someone with a better understanding of that will chime in.

Sorry for not being much help in that area, I havent read up enough on that part to be giving advice.
 
Could my plugs of gone bad they were new when i ran out of gas. Maybe fouled so bad are unusable. Please HELP!
 
odl777 said:
I have 3 ohm coils on now with my dyna s i have installed what elese could it be. thanks
Click to expand...

Did you swap the coils? Did it make a difference?
 
Yeah i swapped the coils and it made a difference for about 15 minutes. than it cut out again. Could a loose connection cause this, because i run straight headers and vibrates a lil form this, possible wobbled something loose. Also why would this all happen after running out of gas or just maybe a quincadince. Thanks
 
odl777 said:
Yeah i swapped the coils and it made a difference for about 15 minutes. than it cut out again. Could a loose connection cause this, because i run straight headers and vibrates a lil form this, possible wobbled something loose. Also why would this all happen after running out of gas or just maybe a quincadince. Thanks
Click to expand...

Swapping the coils was not to fix the problem, but to diagnose it. Did the not-running cylinders change from 1&4 to 2&3?
 
Maybe you are slowly running out of fuel at high rpm. At idle, the fuel delivery catches up and the float bowl fills up and it runs OK. Run the petcock on prime and see if it helps. If not, then something in fuel delivery system from tank to float bowl is possibly plugged. Check/remove filters, clean the tank. Maybe you already did these things. If so, I'm stumped too.
 
would the carbs cause a problem for the cylinders not to fire or be cold. thanks for all the help so far i'll look into the carbs somemore.
 
odl777 said:
would the carbs cause a problem for the cylinders not to fire or be cold. thanks for all the help so far i'll look into the carbs somemore.
Click to expand...

It would be odd for two carbs to do this, especially two cylinders that fire off the same coil.
 
You must log in or register to reply here.

Similar threads

SamLack99
1982 GS570T - 1/4 Throttle Onwards Flat Spot
Replies
4
Views
129
SamLack99
SamLack99
SamLack99
1982-GS750T - Oh my Carbs!
Replies
9
Views
235
Rich82GS750TZ
Rich82GS750TZ
crazyramen
Need Help IDing a 4 into 1
Replies
6
Views
222
crazyramen
crazyramen
NateDogg83
Old Bike, new rider, same ol' problems - 1980 GS550E
Replies
17
Views
367
gtem
gtem
T
1979 GS750 running problems
Replies
8
Views
220
crazyramen
crazyramen
Back
Top