• 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.

81 750e idle probs when warm

  • Thread starter Thread starter MAdams450
  • Start date Start date
M

MAdams450

Guest
Hi all, my gs750e starts fine & runs good for about 5mi, then dies completely when the throttle is closed. It acts like it is starving for fuel. It won't restart for about 5min. Tried running it on prime w/same result. Good fuel flow to carbs on prime. Cleaned carbs, has good fuel flow to carbs when engine turns over with petcock on reserve or main setting. Has good spark when hot. Any ideas? I'm stumped. Thanks in advance for any feedback.
 
Did this problem come on suddenly? Make sure tank cap is venting (so fuel can flow to carbs). Check that idle stop screw/bracket has not loosened up.
 
I tried running with fuel cap loose. Idle bracket is fine. Really seems like fuel flow prob since it starts back up after 5min.
 
Going to pull the petcock and check that again. Carbs are definitely clean. New o rings in all carbs. Float height looks good. I don't have a synchronizer for the carbs, but don't think that's an issue since it runs good for a while.
 
It does sound like fuel delivery problem, but if petcock is flowing fuel OK, then it's internal to carbs. Next time it dies -with petcock in "on" or "res" spot-, can you check for fuel in one bowl ?

If you kept running (didn't have to close throttle) would it still die? or is it when you drop to idle?
 
It starts to bog pretty bad while on the gas. Last time it died, I quickly pulled the #4 drain screw and gas came out, but I don't know if it was a full float bowls worth.
 
Another interesting note-when the engine was about to die, I pulled the choke out and it almost started to run again. Thinking that extra bit of gas gave it a couple of extra seconds of run time before it starved out.
 
A good flowing petcock on PR would refill semi empty fuel bowls quicker than 5 min- definitely recheck petcock flow. You got spark when this problem arises, so it's got to be fuel related. The fuel enricher (aka "choke") draws from very bottom of fuel bowl,so yeah it might give it a slight burst even if bowl fuel level was real low.
 
You must log in or register to reply here.
Back
Top