Author Topic: Flooded Engine  (Read 2426 times)

0 Members and 1 Guest are viewing this topic.

unaspiring

  • Guest
Flooded Engine
« on: May 06, 2005, 03:12:17 PM »
I just purchased my first ever motorcyle, a 1981 CB650c and replaced the battery and rectifier and thought I'd be ready to ride but now the engine is flooded.

It sounds like it's almost there but not quite.  Do I need to replace the spark plugs before I'll have any chance of getting it back up and running, or is there something else I can do to get the gas out of there?

Offline kghost

  • Really Old Timer ...
  • *******
  • Posts: 6,855
  • www.facebook.com/RetroMecanicaAustralia
Re: Flooded Engine
« Reply #1 on: May 06, 2005, 03:33:54 PM »
Turn the Petcock off. Hold throttle wide open. Crank (or kick especially if the batterys weak)
Stranger in a strange land

MetalHead550

  • Guest
Re: Flooded Engine
« Reply #2 on: May 06, 2005, 05:07:55 PM »
So lets get that bad boy on the road huh!?  First we need more info about the bike.  How many miles, what kinda shape its in, was it well maintained, did it sit for a while berfore you  bought it, what kind of mechanical knowledge and skills you have ect.  Im gonna guess that since you had to buy a new battery this bike has sat a while and was mabey neglected a bit.  Whats the inside of the tank look like and how old is the gas?  What do your plugs look like?  Start with the simple things first.

Offline Gordon

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 12,114
  • 750K1, 550K2
Re: Flooded Engine
« Reply #3 on: May 06, 2005, 05:09:22 PM »
If the plugs are wet, they won't fire.  Take 'em out and dry them off, or put some new ones in if you have them.

unaspiring

  • Guest
Re: Flooded Engine
« Reply #4 on: May 06, 2005, 05:18:02 PM »
Thanks for the info guys. 

The bike has been well kept.  The battery was new, put in by the previous owner.  I left the charger on the wrong setting over night and destroyed the battery.  He had the carbs cleaned, new brakes put on, oil change, battery, new plugs, all that right before he sold it.  He thought that was it then had the bad rectifier and didn't want to mess with it anymore.  I bought the bike for $500 and found a rectifier on ebay for $60.

Yes, the plugs are wet with gas, so I'm going to change them out tomorrow and try that.

Thanks again.

MetalHead550

  • Guest
Re: Flooded Engine
« Reply #5 on: May 06, 2005, 06:06:16 PM »
Hey, that sounds like a good deal!  Got any pics of it?  What I was getting at was why it flooded to begin with.  If your plugs are new you dont need to replace them, though it is good to have another set on hand.  Just let em dry, put em back in and see if she'll fire up.  This may sound stupid but youre not holding the throttle open when you try to start it are you, cuz pulling your choke should also open the throttle enough to start it.

unaspiring

  • Guest
Re: Flooded Engine
« Reply #6 on: May 06, 2005, 06:30:49 PM »
haha, yeah, that's how i originally flooded it.  I don't do that anymore :)

as for pics, go to http://words.unaspiring.com/ and scroll down a bit.  you'll see thumbnails and just click on those for the full size photos.

MetalHead550

  • Guest
Re: Flooded Engine
« Reply #7 on: May 07, 2005, 07:02:12 AM »
Hell yeah! She's clean!  Good buy.  Some aftermarket exhaust probably "blues" a little easier but it looks like its running rich.  Is the stock air box and filter on it?

unaspiring

  • Guest
Re: Flooded Engine
« Reply #8 on: May 07, 2005, 11:38:54 AM »
I didn't want to go through the hassle of cleaning my spark plugs so I just ran up to meijer and bought new Champion plugs.

The plugs I put in are different than the ones I took out.  They were NGK and a little larger than the ones the Champion book told me to use.  Could that have caused it to run rich?  I know pretty much nothing about engines.  The air box is stock, but the air filter is newer, I didn't look to see what brand it was.

Anyway, it started up right away, didn't even have to use the choke.  I went out for my first ride on a motorcycle ever, incredible!  Can't wait to get my license next week.

But I did notice it won't go up past 55mph, do these bikes have a governor of some sort?  It's too coincidental to me that it backs off once the speedometer hits at exactly 55.

Offline cb650

  • Old Timer
  • ******
  • Posts: 3,864
Re: Flooded Engine
« Reply #9 on: May 07, 2005, 03:38:36 PM »
Take off the air filter cover.  I never had this prob but it seens that they get air starved. I always put in a stock type k&n or used unies.



                Terry
18 grand and 18 miles dont make you a biker