[img]i/expressions/face-icon-small-frown.gif[/img]

Okay, I haven't ridin my bike (2002 - Grizz 660) for 3 - 4 months approximately. I went out yesterday to try and start the Yamaha to load on the truck. The bike start under the choke/idle/warmup, but when I'd take the choke off, to put in gear and ride, I'd loose power, backfire, and then it would quite. If I kept the bike in neutral or park, and closed the choke, it wouldn't idle, and if I gave it gas, it would die.

Again, the bike would idle under choke, and warmup, but it wouldn't idle without the choke on, even though I know it's warmed up! So, I tried to move the bike to level ground, and it still wouldn't run.

Previously, when the bike would run, it backfired alot at startup, and after that for awhile, until I road the bike for sometime!

The was serviced 1 year ago (recall), adding the extra vents, and exhaust gaurds, fumes deflectors, etc.

Any ideas what the problem is?

At $6K, you'd think the bike would work flawlessly! I wish I bought Honda! Sorry, but I'm extremely disappointed right now! The bike only has 169 hours on it!!!

 

Sounds like you might have some shellac in your carb. The choke is actually an enricher adding more fuel. So when you don't have it on, the bike cuts out. Try cleaning your carb. Also, make sure you have enough fuel in your tank. When you store your bike, try adding some stabilizer to make sure the octane stays good.

 

Pads,
How in the F*K did I get shellac in the carbs? Nothing against you, but I've never had it around shellac, or paint(s)? About the stabilizer, I was thinking about buying some of that. In fact, I think that may help. My tank is 3/4th full! Would you recommend cleaning the Carbs with an additive, or having the carbs removed, and cleaned? Any idea what that would cost to have carbs cleaned at a shop?

Thanks for your help,
Not happy in St. Louis, MO

 

First off, this isnt yamis fault or problem.
The gas in the float bowl was constantly evaporating thru the vent, and refilling while it was sitting. This is where the shellac came from. The carb's pilot jet is plugged. The float bowl is gonna need to be dropped, and the pilot jet cleaned out.
Next time turn the gas tank valve to off, and run the carb dry, before letting it sit, and it wont happen again.

 

The basic rule of thumb for storage is to either have the tank completely full or completely empty. Hondabuster is probably right about the pilot jet. I haven't been inside the 660's carb yet so I do not know if it is easy to get at. I wouldn't pay a shop to have them cleaned but I don't think an additive will do the trick though.

 

I haven't worked on a Grizz, but if it is made like most, there should be a small hose coming from the bottom of the float bowl on the carb. Right above where this hose goes in there is a little screw. If you loosen this screw, it lets the gas in the float bowl drain out the little hose. Drain an ounce or two of gas out and tighten screw back. This will usually drain out whatever is getting sucked into the jet. Do this, then try cranking. My bet would be you have a drop of water, as varnish won't ususally build up in this time frame, but water can condense.

 

Hondabuster,
I turned the gas tank valve to off, but didn't run the carb dry.

David,
I'll take a look, and see if there's a hose beneath the carb.

Thanks for the guidance! I called the shop, and they want approximately $150 to clean the carb! unbelievable!

 

Okay, I got the bike running lastnite! [img]i/expressions/face-icon-small-smile.gif[/img] [img]i/expressions/face-icon-small-smile.gif[/img]

Here's what I did, give me your best guess what the problem may have been?

1. I turned off the Gas Tank valve, and let the choke run dry. Then, I drained the gas out of the float pan, by unscrewing the plug drain. I restarted and it seemed a little better. But it still would cut out when I took it off the choke (ie wouldn't idle).

2. Again, I repeated the above process. But, after restarting, I kept it on the choke, revved it up, and then turned off the choke abruptly. Thus, causing a suction to occur. It seems to be working.

3. Eventually, after doing No. 2 several times, it started to rough idle in the "off choke" position, but accelerated/revved up fairly good!

4. Finally, after running it awhile it seemed to be back to its onself. I drained the gas, and refilled with Stab-il, and fresh gas. From know on I'm going to turn off the gas tank valve, and drain the gas from the float pan.

Any idea what it was? Bad gas, water, or some object/klogging of the carb?
After the fall, I may take the carb off to clean....any idea the best way to the the carb off? Should I take the tank off? Taking the tank off seems the best route to the carb, or float pan?

 

Normally at idle, with out the choke on, the only circit feeding the beast, is the pilot circuit. If you turn on the choke, which isnt really a choke, its an enrichener circuit (another jet, the starter jet is working). So if it doesnt run with the choke off, then it means that the pilot circuit is obstucted. It must not have been very cemented on the inside of the pilot jet, and it came loose, and now its working.
Whats even better, is to completely use up the gas, and let it sit. Use the little drain on the bottom of the carb, and a longer hose, and let the tank drain thru there, have the gas valve on res. That way you wont need to add stabil or any thing else. Next time you go ride, add fresh gas and go. But what you have planned will work too. Remember that it only helps to add stabil to good gas, once the gas has gone bad, nothing will bring it back.
When you take the float bowl off in the fall, look for crud in the float bowl. If you find any dirt specs, or grit, then you should add an inline fuel filter, to keep that stuff out of the carb.
If you get in the habit of always trunng the gas to off,when the motor isnt running, and if you drain the float bowl before any storage , you wont have a problem with it again.

 

Hondabuster, thanks for the guidance! Man, I'm glad its up and running again!!!![img]i/expressions/face-icon-small-smile.gif[/img]