Why does my Yamaha 650 run too rich?

If the left side is completely black, she’s running too rich, no air leaks on that side likely haha. A couple things affect how rich/lean the bike runs at idle, easiest thing to check/adjust first is the float level. New idle mixture screws can be purchased from mikesxs.com (look for parts for the 650, our shared carb is the BS34).

What happens when you give a Yamaha a choke?

Basically, she’ll start up fine and idle around 1500-2000 rpm (full choke) but upon going to 1/2 choke or giving her any throttle, she dies. I assume it’s due for a carb adjustment of some sort, but I need a point in the right direction. Thanks!

Why does the round slide on my Yamaha die?

The round slide seems pretty stout, but the diaphragm that controls its operation could get a tear in it and cause it not to operate right. There are lots of pinholes in the needle jet that clog up easily. The main jet is a pretty big hole that wouldn’t clog too easily, and mainly just limits the flow at full WOT.

What kind of motor does an 85 ATC 110 have?

I have an 85 ATC 110 that im having a problem with. Its got excellent compression and the carb has been completely cleaned out, also have new spark plug. Motor starts on one pull with no choke and runs excellent.

Is the warrior Idles fine when trying to accelerate?

The warrior idles fine. I’ve adjusted to air mix screw back and forth. It changes the idol but doesn’t seem to improve things when I try to rev it up. 2.25 turns seems to be the sweet spot, as far as idol. The needle is where zoom put it.

Why does my Yamaha Virago backfiring on deceleration?

In general, backfiring on deceleration (as opposed to acceleration) is generally caused by a lean condition in the pilot circuit. What happens is that the mixture leans out enough to where is fails to ignite consistenty.

How big is the engine in a virago?

Virago Specifications Engine oil With Filter Change 3.3 qts (3,100 cc) Without Filter Change 3.2 qts (3,000 cc) Engine Rebuild 3.8 qts (3,600 cc) Front Forks

Can a virago backfire on a commercial toilet?

I own a 1983 virago xv920k with which I have had the decel backfire problem. The mixture control valve works exactly like a flush valve for a commercial toilet! Intake manifold vacuum acts on a diaphragm which in turn actuates a plunger allowing air to be inducted into the front #2 cylinder.

Is the fuel octane on a virago 87 or 89?

*NOTE*Also, Fuel Octane is 87 not 89 – unleaded. Unless there are exceptions that are higher compression, but I believe the bulk of Virago’s are 87 Octane*

Why does my motorcycle engine stall when warm?

And the problem is often worse on a hot day. The dreaded stalling issue when the engine is warm is the most common idle problem and it is mostly related to the very lean air/fuel ratio on the modern fuel injected motorcycle engine. Why does my motorcycle stall at idle when the engine is warmed up and at operating temperature ? – Low compression.

When did the Yamaha XT600 race bike come out?

Yamaha USA was again selling the 550 in 1983, but also available was the TT600, a lightless race bike bored out yet again, to 95mm, or 595cc. For ’84 the factory detuned the TT a little, put lights on, and the XT600 went on the U.S. market.

Why does my yamahaxj600 stall in first gear?

This invariably happens with my YamahaXJ600. It can usually be solved by pulling the clutch in and giving the engine a couple of quick blips of the throttle This usually frees the plate before trying to select first. This post is not being displayed . why would a faulty side stand switch cause only one stall, that makes little to no sense.

How big is the gas tank on a Yamaha XT600?

On the asphalt, however, it required a major handful. A few of the very early XT600s came in with a front drum, but that was quickly dispensed with. Dry weight was a modest 300 pounds, with the gas tank holding an equally modest 2.3 gallons, good for a hundred miles at best.

What was the rev meter on a Yamaha XT600?

Kickstarting was not difficult, since a cable lifted one of the exhaust valves as the kickstarter was engaged. Even when cold, one or two kicks would suffice. Up on the dash the speedo went to 110 mph, and the bike could push the 100 mark. The rev-meter redlined at 7,000.

How to troubleshoot a 350 cubic engine backfiring?

First, check that the mixture screw (s) on the carburetor are adjusted properly. Most of the carburetors installed on the 350 use a single air/fuel mixture screw, while some carburetors use two.

Why is my V-twin motorcycle bogging on acceleration?

If your V-twin motorcycle has been running fine and starts bogging, it means there’s something wrong with the assembly or a component. Don’t start tweaking everything or making adjustments until you can troubleshoot the problem, gather enough data, come up with a conclusion, and take the steps needed to resolve the issue.

Can a Yamaha Road Star run without the carburetor?

This is what allows the engine to run when sitting still in neutral or with the clutch lever pulled in. If your carburetor is maladjusted however, this will not function correctly and the bike may die without the throttle open. Learn to adjust the idle of your Yamaha Road Star carburetor and ensure that your bike will always stay alive.

What’s the idle speed on a Yamaha bike?

The bike hasn’t been running to my knowledge for 4-5 months. Prior to my purchase the previous owner, a friend, said he cleaned the carbs. Basically, she’ll start up fine and idle around 1500-2000 rpm (full choke) but upon going to 1/2 choke or giving her any throttle, she dies.

Why is my power V Star 650 losing power?

Will see while running it tomorrow. I don’t think it’s anything to do with your ignition, but by the sounds of it you have gotten some **** blocking your main jets in the carby.

What should I do if my V Star 650 Idles?

Drain the bowls too. Put back a half a tank of fresh gas with B12 at the amount recommended for a FULL tank. It it starts acting different after a couple of test runs, finish filling the tank and ride it out. If it doesn’t help, you have lost very little.

What’s the best choke for a V Star 650?

Berrymans B12 Chemtool and Gumout are good ones……..and are usually available at auto parts stores and WalMart…….for about 1/3 the price of the “miracle snake oil” product. Yes, the choke works as it should. It is always required when starting the bike cold.

Why does my VStar 650 not change gears?

I have a vstar 650 its a 2007. When I pull the clutch in to change gears motor revs. The throttle does not seem to be sticking, bike is warmed up, just seems to take time for it to return to an idel when I rev it or as stated am in the process of shifting. Any help would be appreciated.

When does the choke come off a bike?

Within the first 20 or 30 seconds the choke should come off and the required fuel/air mixture is then supplied by the pilot circuit. Your pilot circuit is obviously not doing its job.

How many miles does a 1980 xs650sg have?

Picked up a 1980 XS650SG with 5100 miles from the original owner that had it in storage for 31 years. New tank, new fuel system and carbs have been cleaned and rebuilt recently with stock internals. No upgrades just bone stock carbs.

Within the first 20 or 30 seconds the choke should come off and the required fuel/air mixture is then supplied by the pilot circuit. Your pilot circuit is obviously not doing its job.

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