• 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.

Engine bogs at 5500 rpm

  • Thread starter Thread starter gstom
  • Start date Start date
G

gstom

Guest
My 81 gs1100e bogs at 5500 to 6000 rpm. Other than that it runs great. It starts well, idles nicely, and accelerates extremely fast until it hits 5500 and then it starts to bog and won't accelerate anymore. Once you shift and bring the rpms down it accelerates normally again, until it reaches 5500 or 6000 rpm. The bike has been heavily customized for racing. It has performance exhaust, 13to1 compression, mikuni carbs, and depending on who you talk to puts out 135 to 150 hp. I am running premium fuel, and have had the carbs professionally cleaned. The bike sat for 2 years before I bought it, and it ran great for the guy I bought it from. He used to race it and catwalk it all the time. Any ideas? Nothing has changed since he parked it, and I got it cleaned up and running.

picture.php
picture.php

album.php
 
Last edited:
gstom said:
My 81 gs1100e bogs at 5500 to 6000 rpm. Other than that it runs great. It starts well, idles nicely, and accelerates extremely fast until it hits 5500 and then it starts to bog and won't accelerate anymore. Once you shift and bring the rpms down it accelerates normally again, until it reaches 5500 or 6000 rpm. The bike has been heavily customized for racing. It has performance exhaust, 13to1 compression, mikuni carbs, and depending on who you talk to puts out 135 to 150 hp. I am running premium fuel, and have had the carbs professionally cleaned. The bike sat for 2 years before I bought it, and it ran great for the guy I bought it from. He used to race it and catwalk it all the time. Any ideas? Nothing has changed since he parked it, and I got it cleaned up and running.

album.php
Click to expand...

Sounds to me like fouled carbs......my outboard motor on the boat does the same thing after sitting all winter with fuel in the carbs. I run some Sea Foam through a couple tanks of gas and it cleanse them up from the inside out! Worth a try....
 
carbs

carbs

Just got the carbs professionally cleaned before I started running it. It was the first thing I did since it was sitting so long. That and an oil change.

picture.php
 
Last edited:
"professionally cleaned" by a motorcycle service station? They should have noticed the bogg down at 5500 rpm and NEVER should have let them leave in that condition then!

ANY reputable service department will test their work post service.......take it back to them and let them fix it!
 
Check your timing. I was just playing around with mine the other day and afterwards it did the same thing. It's completely normal until I hit about 5000 to 5500 RPM. My points are a bit worn, but I'm putting in a DYNA S on Saturday so I'm not too worried about it at this point. Plus it's supposed to be rainy until then anyway.
 
I had same problem on my 650... one of the earths to the frame had a bad conenction to the loom by the mounts at the front of the tank....

also make sure shes running on all 4... (just touch the header pipes)

another thing is the monkeys at the shop who did your carbs could have changed the jets thinking it was too rich... not knowing the extent of the modifications i would give them a call...

they could have also over oiled the air filter.

hope that helps.

Skid.
 
Last edited:
You must log in or register to reply here.
Back
Top