Please Help: Bike stalled!

B

Butterybunz

New Member
I just started riding last week and I bought a 1978 Suzuki GS750 that I am turning into a cafe racer. Today my friend asked me to go on a ride to the lake. It's very hot and humid today but its about a 30 minute ride so I didnt even think about the heat. About half way through the ride the bike started to lose a little power, then when I came to a stop I went to take off and it could barely take off then stalled. It wouldn't start to I pushed it into a parking lot. Please tell me it just overheated!

Thanks
 
Actually, you should hope it didn't over heat. Air cooled motors take an awful lot to shut down from heat.

Did you ever get it to start? I would guess a fuel issue. Either failed petcock, blocked tank vent, etc.
 
Yeah, definetly a fuel problem. Check inline filter? Choke snafu?

Will the motor turn over but just not fire?
 
we need more info. oh, and before you start "making it into a cafe racer" start by making it a perfectly running STOCK bike. then start screwing with shit.

words of advice from someone whos gone down that road.
 
Well the bike was supposedly a perfect stock bike when it passed all the inspections at Simply Sportbikes. I'm just doing cafe bars and a cafe seat is all.

We let it sit for an hour then tried to start it, it turned over and was firing a couple times but couldnt start. Used the choke and it started, would drive it about a mile or 2 and it would stall again after coming to a stop.

We put it on a trailer and brought it home. Today on a cooler day it started up fine, is running fine, I only took it around the block so far to stay close to home if it died and it had a little bit of hesitation under throttle. I looked and the oil is really low on it, but it just had an oil change.

I'm thinking about topping off the oil and going for a ride to see what happens. What type of oil should I use?
 
So it ran out of gas. Check the filler cap to be sure that teh tiny breather hole is not plugged. It's in there somewhere to allow air in as the gas is used up.

You may also have a partially blocked filter in the petcock. Could be rust particles or other debris reducing fuel flow. To check that you have to drain the tank and remove the petcock and clean it. But a quicker/simpler way to check that is to pull the fuel pipe off the carbs and insert it into a fuel drum and turn the petcock on and watch the fuel flow. Let it run for 5 or 10 minutes (outside - not near an open flame).

And watch it for all that time to see if the flow rate drops off
 
"perfectly running stocker" is rarely true. I don't care what the previous owner says, the bike is going to need a full tune up as soon as you get it. valves adjusted, timing adjusted, carbs synched and adjusted at minimum. most often needs a lot more work then that.
 
Cool, glad that's been taken care of. How much rust is in the tank? You may want to consider treatin it with some naval jelly if its taking over. Im kinda anal about rusty tanks haha cause there's no new tanks for our old bikes!. Good luck with it all!
 
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