Sudden change in performance By learae (Read 3,106 times)

[Alleyoop]

If you took the FUEL RATIO SCREW out that is probably where the tiny washer belongs. Also you should see a tiny O-RING as well without the Rubber O-Ring it will suck in air from around the screw.
Alleyoop
Here is what the Fuel Ratio should have inside the hole and IN THAT ORDER:

[learae]

I figured out where the washer was from, the fuel ratio needle.

Does that go back in needle, spring, washer, o-ring, into carb?

[learae]

Oh perfect, thanks

[Alleyoop]

How is it coming any progress or success?
Alleyoop

[learae]

After figuring that the washer fell from there, I realized the spring was still in the hole with the o-ring and the o-ring is smushed. It must have been put together wrong in the past, and that might have been the origin of some of my problems.

So I am out of commission until I find that o-ring. The auto parts store didn't have anything small enough. There's a scooter shop not far from here, but of course, places like that are never on "project day" Sunday. I'll probably have some time to walk out there on Wednesday.

[Alleyoop]

Normally the shops will not have specific items for rebuilding something. You will most likely have to order a set:
Alleyoop
Here is where you can get the Fuel Ratio parts set just scroll down and you will see the set:
www.harley-performance.com/cv-performance-parts.html

[richardthescooter2]

Hey Alleyoop, I have a question, when taking carb off and giving a good cleaning, does that effect the fuel ratio settings?

[Alleyoop]

If you do not take the Fuel Ratio screw out the SETTING will be the same BUT it could change the mixture if something had a partial clog and it got cleared when cleaning. Also never say never but during cleaning something you used like a rag or something may have left a piece of crap and may result in a clog AFTER a cleaning(crap HAPPENS).
Alleyoop

[richardthescooter2]

I'm just thinking about cleaning the carb someday, it's never beed clean the right way since I goy scoot, only thing I did was adjust float and clean the inside. Is there a cleaner that would get to all those areas without taking carb off?

[learae]

They make cleaners that you put in your gas and run through the engine. I don't think they would do as good of a job as a manual cleaning. The carb is really easy to get out, and a little bit harder to wiggle back in.

While I have been waiting for the opportunity to hunt down an o-ring (I don't want to order a $12 kit if I can grab one at the scooter shop down the road) I have been working on the other scooter I got [free].

It has been sitting since 2009 [best guess] and the carb was terrible!! But, I did get it running OK before I took the carb out. I cleaned it hopefully well enough, then cleaned it again for good measure.

The throttle cable was messed up, and I got the replacement now. I started putting it in tonight but didn't finish. Before I put it in, the cable slid freely, but now that it's attached on both ends it feels like it's binding and won't slide smooth. I'm going to disconnect it from the handle and see if it is binding in there. Maybe tomorrow.

I'm going to set the valves on it, get it running good, and winterize it for the season. The oil and air filter on it are great, so it looks like whoever had it before took care of it to some extent before letting it sit.

A friend of mine heard I was fixing 2 scooters, and she offered to give me hers.. free. She says it doesn't run and should just be thrown away, but nobody would take it from her. I said, "Challenge accepted". It is another Roketa 150cc. I think I am going to go there to take the carb and battery out, bring them home to clean and charge, and hopefully drive it home

Soon I'm going to have a fleet

[richardthescooter2]

Learae, your right I know there is no easy way out, I need to take this carb off and clean it good. I do use sea foam and berrymens by times, I got my 250cc roketa in 2010, only had the carb off to adjust the float so its way overdue to be cleaned, glad you got a scoot free, I'm like you, I like a challenge, I enjoy working on my scoot and hope to have a little scooter shop in the future.

[Alleyoop]

Well you may get lucky and they may have old carbs laying around that they are willing to get the O-Ring out and give it you free or for a buck or two.
Alleyoop

[learae]

Just got back from the scooter shop. I got the o-ring and a new enricher casing (remember, a hole was stripped out of it) for $15. He didn't want to retap the hole for me, said it would take a long time. When I argued it would only take a minute (I've tapped my share of hundreds of holes) he said he had to find the drill first.

xD

[learae]

Got it all put together. I rechecked the noisy valve and reset it to 0.004" because it was somehow a lot looser than that. Oops.

I also replaced the oil. It hadn't been replaced in a while, but it was very clean.

Can you clarify for me, do you read the dipstick with it screwed in or with it just resting in the hole? I have read varying opinions.

I'm planning to replace the gear oil as well, but it was so cold and snowy over the weekend that I haven't had an opportunity. Once that is done I'll have a good baseline for the maintenance on the scooter, since I don't know what has been done before me.


It was clear and sunny yesterday so I got to ride to work. It was fun, but cold. Here are some new observations:


The idle screw has a huge effect on how well it runs. 1/4 turn in either direction and it definitely shows symptoms of being too rich or too lean. I think I am in a good place right now for this weather.

I can fire it up cold and drive away right away. I no longer need to wait for it to warm up, but it has more power once it's warmed up of course. I've been letting it warm up a minute or two as I put on my helmet and gloves, and then off I go. Don't have to wait 5-10 minutes anymore.

It idles higher once it's warm, but now it idles steady cold at around 1100 RPM and comes up to 1400-1500 RPM when warm. Before I cleaned the carb, it wouldn't ever idle that low.

I started it one time after a gas-station stop and it was idling at 2800 RPM. After I took off and stopped to leave the gas station parking lot, it was back down to normal.

It sounds different when I give it throttle. Before, when it was under load, the pitch would drop and it would make a grunting sound. Now it jumps right up to around 6000 RPM and doesn't rev any faster, even at WOT.

------

I also got the Roketa together and running. I fired it up for a while and rode it up and down the road a few times. It has an electrical gremlin keeping the brake light on, but that should be easy enough to find. Then I just need to put the body panels on. The plastic lenses all need polishing also, they're very yellowed from sitting outside for 3 years. I can't even read the speedometer through the lens.

[terrilee]

Dec 11, 2012 13:05:54 GMT -6 richardthescooter2 said:

I'm just thinking about cleaning the carb someday, it's never beed clean the right way since I goy scoot, only thing I did was adjust float and clean the inside. Is there a cleaner that would get to all those areas without taking carb off?

NOT TO HIJACK YOUR THREAD BUT.................
richard
i have never cleaned my carb and i have over 8000 miles on it
BUT
i run about 1oz of seafoam every other tank full
my tank is only .9 of a gal tho

i keep "Chrissy" in a tent garage. and was worried about it sweating in the summer
so i run seafoam all year long, not just when they add ethanol
and moisture in the winter.

but then again i have had so few probs with her
i guess i got the "gold scooter"
under the wrapper
lmsao