| Author | Message | ||
     M2marc |
I went for a ride today. warmed it up for a couple minutes. went through the side streets for ten minutes nothing too aggressive or too fast just some shifting and some turns to shake the dust off. I'll admit its been over a month since ive ridden. just started it every week to keep the gas fresh in the carb. Everything worked great and she ran like a top for the first ten minutes. I then went on a road that has some twisties where I could open her up a little. I had to hold on for dear life because it was bucking and surging so bad. I tried a different gear and it did the same thing. Seems like anything over a quarter throttle.I re jetted a while back and ran fine, plugs are new, new carb gasket. My question is.... because it was running fine the last time i rode it and ran fine for the first 10 minutes. what could be the cause? | ||
| Midnight_rider |
Have you tried Seafoam ? | ||
| Buell_bert |
How close are you to an low tank? Did you try and switch it to reserve first? I had the same problem and it was because the tube was to high and I could not get what I thought was decent mileage before switching to reserve and I just pulled the petcock and cut off an inch or so from the tube. It looked like plenty of gas was in the tank but wasn't enough to cover the tube. | ||
| M2marc |
Tank is over half full. I tried switching to reserve and rode for a few miles and got the same thing. I have some sea foam. I guess I can try that. But if the jets were clogged would it have acted fine for the first 10 minutes? I noticed the rear spark plug wire boot was a little loose making the connection to the plug. I might try to crimp that a little. | ||
| M2marc |
Would an electrical problem cause these symptoms? and what would I check for? | ||
| Littlebuggles |
While you're working on it pull the fuel tank breather line off of the nipple and blow the line out. Sometimes you get condensation in there and it will keep the fuel from flowing freely. I'm not much help for electrical issues. | ||
| M2marc |
I blew on the breather hose both ways. No blockage or condensation. I added some seafoam, toped off the tank, crimped the plug boot connector. I will take for a ride later. | ||
| M2marc |
Topped off the tank and added 4 oz of seafoam. After about a 25 mile ride It seems a little better or maybe it was my imagination. still bucking and sputtering.Only this time it seemed to be more at half throttle and not as much as quarter throttle. I got almost all of the way home and about 1/2 mile from my house it just died on me. I coasted to the side of the road, scratched my head for a bit and kept trying to start it. nothing for a few minutes just kept cranking. turned over a couple of times but acted like the idle was set too low. Every time i gave it some gas it would die. I tried this with the main and the res. Finally it turned over and i got it home. Seems like its a fuel issue. How many miles do i have to run with the sea foam before I see an improvement? Could the gas be that bad in just a short time ? Was it that bad that it just died? and why only after a 25 mile trip ? | ||
| Jim2 |
It may be time for you to take off your carb, take it apart and clean/rebuilt it. You may have debris in your carb that Seafoam can't fix. I've had small grains of rock in my jets before that no gas treatment would have been able to dissolve! | ||
| M2marc |
I had it off a few months ago when I rejetted. But I guess a spec of sand can get in there at any time. | ||
| Bluzm2 |
Side stand switch? | ||
| M2marc |
Would the side stand switch cause the sputtering symptom? I know it might have caused the cutting out problem. Can I just bypass the switch by splicing the wires together at the switch ? | ||
| Buell_bert |
Just short them together so that's out of the mix. | ||
| M2marc |
im going to drain the tank, clean the filter, clean the jets and short the switch today. | ||
| M2marc |
drained and rinsed the tank, some gunk but all was kept back by the screen. cleaned the screen, cleaned the whole carb, jets, needle, and all of the passage ways, all looked prety clean from July's cleaning. Shorted the sidestand switch. Unfortunateley 8 beers into the project I'll have to wait until tomorrow for a test ride. While I was at it. there was not a single drop of spooge or oil in the catch can/drain tube. I did an oil and transmission change back in july so I know there is oil in the system. Do all bikes puke? or am I a lucky one. | ||
| Midnight_rider |
long as you didn't drop or spill any beers tomorrow will be a good day for a ride | ||
| Buell_bert |
This Sea Foam craze. In the 60's and 70's it was pour Marvel Mystery Oil in the gas tank and with oil changes, and in the 80's it was Teflon oil and gas additive. I can't remember the 90's fix it all. Nothing will fix a really plugged port, jet, fuel screen or filter than a good cleaning. I have seen carb cleaner work on cleaning the carb venturis and linkage sticking sometimes and the addition of a heavy dose of injector cleaner work on the EFI on occasion but that would be the exception. AW heck just my opinion anyway. It is the ride and not necessarily the destination. I guess it does not hurt to try the Sea Foam, I have some friends and family that swear by it. | ||
| Buell_bert |
Oh another thing if the wires to the coil were loose?? I also had a loose plug wire or bad connection and when I pulled the NEW plugs they did not look the same. Snugged connection and replaced fouled plug and it fixed that problem. Keep the rpms up. | ||
| M2marc |
Got everything back together added some gas. idled and revved great. went about 1/2 mile and started to sputter like it wasnt getting gas, switched to res and got the same thing. then it died coasted to the side of the road, tried for a few minuted to get it started. finally started and babied it back the 1/2 mile to my house. Started it again and idled and revved nicely, tried first, tried second while sitting still and stayed idling. I also checked the coil connections...they were fine. The only thing I can think of is maybe the diaphragm on the slide is buggered under the cap. It was a pain to get it to seat in the grooves and not quite sure if it seated correctley. seemed to be about a quarter inch too big. any thoughts ? | ||
| Cyclonecharlie |
Sounds like a perfect case of no tank vent. | ||
| M2marc |
The actual hose is clear. I can blow through it without a problem. When it is attached there is some restriction but I assume its normal. i can still blow through it. ?? | ||
| Buell_bert |
You can usually go quite a few miles before the tank vent causes any problems. Also just pull the cap and stick it in your pocket and if the bike runs fine then that is definitely your problem. Simple. | ||
| Buell_bert |
Hey another thing? Is your bowl vent plugged? | ||
| M2marc |
Is the bowl vent on the float bowl of the carb? Not sure exactly where that is. I cleaned the jets, passage ways, emulsion tube and everything else that could be cleaned. Any ideas about the vacume slide diaphragm ? | ||
| Cyclonecharlie |
On the front of your carb.(air filter side) you have three bolt holes and a vent hole. Make sure your gasket or backing plate is not covering up the vent. | ||
| M2marc |
As I took the air filter off i noticed that the bowl vent was not obstructed by the backing plate or by the gasket. Decided to take the carb apart again. cleaned all of the jets, passageways, vents etc., blew compressed air through it all afterwards. cleaned out the gas tank vent/valve. in the process of putting it all back together. is there a trick to getting the diaphragm to seat correctly? also noticed there was not a single drop of oil coming out of the crank case breather. is this normal that some bikes just dont puke? | ||
| Cyclonecharlie |
If you get gas or solvent on the diaphragm it will grow larger. wash it in soap and water and let it sit for a while and it will go back. | ||
| M2marc |
I was able to get the diaphragm back in by pulling up on the slide and then placing it in the groove and then place the cap on. Can you thing of why my bike may not be puking from the crank case vent ? Maybe I have not ridden it as much as I need to. | ||
| Buell_bert |
I have not had any problem with the oil coming out of either of my engines or my other engine I sold. I am just lucky I guess. Also does the slide and needle move freely when you rev it while running or not? And did you get the needle (#7) in the right way? | ||
| M2marc |
Yes the needle moves freely. If #7 is the jet needle then yes it is in the correct position under the spring seat. The needle jet on the other hand was a pain to get to seat all the way in, but I got it carefully (tapered side in first)to accept the jet needle. I had a 200 main and switched back to the stock 195. hope that makes a difference also. Got it all back together last night. I'll try another ride around the block today and see what happens. |
