This all started with the reserve switch on the fuel on postion ( arrow pointing down) and i rode it for atleast 20 miles like this

Ok i was just driving along and all of a sudden the bike started like "missing" and popping like it was running out of fuel,  well it finaly died so i costed to the side of the road.  

I turn the reserve switch to prime, wiat a few secs and try to start and vroom ( with a little choke) so i take off,  while im riding i switch the reserve switch forword to be on reserve, rode it  a little bit then switch it back to fuel on ( arrow down) after awhile it starts dieing again so i switch it back to prime quick.... i was getting irriatated and didnt want to ride to a friends house a half running bike so i turn around and run tests with the fuel reserve switch...

On prime it runs fine.....

On reserve i drove for 8 miles with no problems

On Fuel ON I drove for about maybe 1/8 mile or so then it started popping and dieing...

So im thinking the Non Reserve line from the tank is pinched.   Nope not pinched...

Im almost certin that the regular fuel line from the tank is the problem, but i dont know what it is,   can the lines get air in them or somthing blocking the hose preventing the fuel from flowing???

And you're sure you had a full tank?

This is exactly what should happen when you get down to the last gallon or so.  At this point, a glance inside the tank indicates that there's still lots of fuel.  But it's misleading....  You wouldn't be the first one to be fooled!

The fact that you rode in the ON position for 20 miles tells me that the ON hose (and petcock position) are OK.

See how much fuel you can pump in at the station and then let's revisit this.

yes  it looks to be at least half full and i drove like 15 miles on reserve....

The reserve part of the tank cant be that big


Im gonna go fill it and see what happens...

Quote from: jpwyes  it looks to be at least half full and i drove like 15 miles on reserve....

The reserve part of the tank cant be that big

Actually, it can!

See my last 2 posts in the thread gas problem.. for sure.  I went 47 miles on REServe that day.

ok maybe it was less than half full,   how big are these tanks....

Took 3.7 gal to fill it up

I though reserve was to get you another 5 or maybe 10 miles to the nearest gas station and that was it,  i didnt no reserve meant go for another 30miles and go to the one with the cheapest price....

Guess i was mistaken...


I gotta get my trip knob fixed....  then all my problems would be solved..

My cousin is gonna machine me stainless steel or aluminum trip knob, if he can do it, i gave him the broken off peice and he said he will try...

ohh yea after i fill up with my 3.7gals of gas at the station i switch the reserve switch to on, so i could see what happens, well i made it to my house which is maybe 2 miles from the gas station with no problems

If you have a 1989-2000, non-California model, the tank holds about 4.5 gallons.

Your bike is acting PERFECTLY!  

One more question, the perivious owner on my bike put a full exhaust system on my bike, but the rest of the bike is stock,  when i ever i let off i get this popping, backfiring sound  is this alright to drive like this...?

Ive read then when you do exhaust your suppose to do like a jet kit and filter too..

I was thinking of doing the jet kit thing and in the process clean up the carbs to make sure it ready for a while, i dont know when the last time the carbs where looked at.

Or should i just leave it alone and live with the popping, i think it sounds kinda retarded when i let off...

i just did the same thing....i was riding for about 120 miles since i filled the tank all the way and the bike died....then i switched to reserve and rode to the gas station and put in 11.5 liters  
i don't know how big my tank is but i'm guessing it's around 5 gallons (20 liters or so)....is that about right? ride on ON for half the tank and ride the other half on RES?

the popping/backfiring is common with full systems. no problems although I'd check if the carbs were rejetted. I assume they were but one never knows. Does the bike have stock or aftermarket air filter in stock airbox?

Quote from: pantablothe popping/backfiring is common with full systems. no problems although I'd check if the carbs were rejetted. I assume they were but one never knows. Does the bike have stock or aftermarket air filter in stock airbox?

stock paper filter in the airbox

rejet rejet rejet. full exhaust system? yeah, its exhale is fine, now it needs to inhale just as freely, use a drop in K&N filter or Pod filter and dump the airbox, hell, im thinking of building a small dry box for under the seat/tank where the airbox went.

Quote from: GRUi just did the same thing....i was riding for about 120 miles since i filled the tank all the way and the bike died....then i switched to reserve and rode to the gas station and put in 11.5 liters  
i don't know how big my tank is but i'm guessing it's around 5 gallons (20 liters or so)....is that about right? ride on ON for half the tank and ride the other half on RES?

I'm more familiar with liter figures, so I'll answer that one. The old tank is rated at 17 l. that's measuring the air space in an empty tank. You can actually fill in 15 l, after that fuel will rise in th short wide tube that's under the inlet and you can get in the last two liters only in a painstakingly slow procedure. (Have fuel rise in the tube to the brim, wait until it's drained into the tank against the air coming out through a thin hole in the wall of said tube, repeat ad infinitum.) Nobody in their right mind does this (and it's a good thing too, as much of that extra fuel would leak out if you let the bike sit in the sushine for some time and the fuel expands), so 15 l is the capacity of your tank. Of that about 4 l are reserve.

I usually run the bike until I hit reserve, then go fill her up (in no particualr hurry, since I know I'm good for at least another 70 km). I usually pump between 11 to 12 liters.

when I 1st got my bike I thought there was a problem also, its just that the reserve needs to be put on kinda early

Quote from: jpw

Quote from: pantablothe popping/backfiring is common with full systems. no problems although I'd check if the carbs were rejetted. I assume they were but one never knows. Does the bike have stock or aftermarket air filter in stock airbox?

stock paper filter in the airbox

Yea re jet, simple, just 40 pilots and 125 mains and 1 #2 washer under needle and 3 turns on mix screw.... all this if you dont have a jet kit in already. The needles wont have grooves if its stock. Paper in airbox is fine, just slosh it in gas and clean it... yes it will clean off in gas, dry it and put back in.
Cool.
Srinath.

Quote from: seshadri_srinath

Quote from: jpw

Quote from: pantablothe popping/backfiring is common with full systems. no problems although I'd check if the carbs were rejetted. I assume they were but one never knows. Does the bike have stock or aftermarket air filter in stock airbox?

stock paper filter in the airbox

Yea re jet, simple, just 40 pilots and 125 mains and 1 #2 washer under needle and 3 turns on mix screw.... all this if you dont have a jet kit in already. The needles wont have grooves if its stock. Paper in airbox is fine, just slosh it in gas and clean it... yes it will clean off in gas, dry it and put back in.
Cool.
Srinath.

Would i need bigger jets if i put a K&n in the airbox,  ill probably leave the airbox on cause the bike will get rode in the rain and i dont want water in the engine.

Yes wiht restrictor it probably will work with 125 and 127.5 wihtout restrictor.
Cool.
Srinath.

I have a K&N and just rejetted with 40's and 127.5's.  I haven't been able to ride much with all this rain, but my first ride after rejetting was SWEET!