minnescoota.com Forum Index
Author Message
<  Classifieds  ~  Idle Jets
dmarquis
PostPosted: Thu Oct 13, 2005 9:32 pm  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

Hello All,

Anyone got a SI 48/160 or 55/160 idle jet that is will to part with it?

Dave
Back to top
View user's profile Send private message   Visit poster's website
jsyx
PostPosted: Fri Oct 14, 2005 4:59 pm  Reply with quote
Licensed


Joined: 03 May 2005
Posts: 307
Location: MPLS.

dude.
what the hell did you read on StellaSpeed???

_________________
-josh
B.O.Y./S.C.
Back to top
View user's profile Send private message  
dmarquis
PostPosted: Fri Oct 14, 2005 5:12 pm  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

I streached out my toaster spring. I read that I can get 5 mph higher topend....

No really. I just put a non-cat exhaust on (px-150) and I need a different idle jet. No one in town carries them. :-( I need a 48 or 55/160 idle...

Dave
Back to top
View user's profile Send private message   Visit poster's website
Derrick
PostPosted: Fri Oct 14, 2005 5:51 pm  Reply with quote
Licensed


Joined: 19 Jan 2005
Posts: 771

Sorry, I don't have those jets either.

You typically don't have to change your idle jet when you change your exhaust. It's usually the main jet you change. The idle jet ONLY effects the idle mixture and JUST off idle. It has very little effect on mid throttle and up. The idle jet does not effect top speed.

Where did you get this info?
Back to top
View user's profile Send private message  
dmarquis
PostPosted: Fri Oct 14, 2005 6:49 pm  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

Well.. the mysterious stella speed... I am having a bogging issue along with the air leak type high/racing idle when the engine is good and hot. People's opinion is that it is dieseling whne hot and at idle. The plug is really rich though. I will check in the the AM again to see what it looks like.

I am running a 160/BE3/102 main with the px-150 non-cat exhaust on a 2005 stella.

Dave
Back to top
View user's profile Send private message   Visit poster's website
dmarquis
PostPosted: Sat Oct 15, 2005 9:49 am  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

I think I fix the issue for now. I took the cylinder shroud off to exam the head for any tell-tell air leaks. I believe if there where any, I would see a oil drip ect. Didn't see any, the head and cylinger are clean. I then reassembled that part and then opened up the air box to check that out. Wehn I was in there last weekend I just end butted the air seal ends together. This time I over lapped them a bit, per a recommendation.

I cleaned both jets to make sure I don't have a blockage and the aircleaner. I reasemmbled the air bock and gave it a test.

Now the exchaust is smokey where as before it wasn't at all. I let it run for about 10 minutes and still smokey....

I will have to get out on a open road and do a chop to see what the plug looks like.

Dave
Back to top
View user's profile Send private message   Visit poster's website
Derrick
PostPosted: Sat Oct 15, 2005 11:47 am  Reply with quote
Licensed


Joined: 19 Jan 2005
Posts: 771

Here are a couple thoughts.

I have seen the oil injection arm get stiff when they get fully warmed up. They are too tight and the heat causes them to bind. This was a problem even back in the early P200 days. This causes the throttle slide to stick open only when HOT. The typical fix was to double up the slide return spring in the carb.

If you are fouling plugs and have a smokey exhaust you might be way rich at idle. With a clean plug, turn the idle mixture screw in (leaning it) until the engine will not "blip" clean. Then back it out until it will just "blip" cleanly. Then your idle mixture is set. You should be fine with the stock idle jet. I can't remember, what is the stock Stella idle jet?

You should not have a air leak unless you messed with the carb/air box base gaskets or cylinder base gasket.

It sounds like you have more then one issue.
Back to top
View user's profile Send private message  
dmarquis
PostPosted: Sat Oct 15, 2005 1:32 pm  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

Thanks Derrick for you help!

Well It seems to be back to normal without the racing / lean / air leak. I do think I am running rich though.

I did a chop with a brand new plug for 5 miles wide open.


And here is a new plug that I ran on the way home, at about 20 miles:


Set up:
I am running a 160/BE3/102 main with the px-150 non-cat exhaust on a 2005 stella.

Stock Stella:
140/E3/94 main stack. cat exhaust.

Dave
Back to top
View user's profile Send private message   Visit poster's website
Derrick
PostPosted: Sat Oct 15, 2005 3:53 pm  Reply with quote
Licensed


Joined: 19 Jan 2005
Posts: 771

The second picture looks like you left the choke on! WTF?

What is the stock IDLE jet? I have a chart that lists the richest to the leanest idle jets with air holes. (not the old style plugged ones - you don't need a chart for those!)

I have found that it is very difficult to do short distance plug chops with todays gas. The plug stays clean for many miles.

I still think your reving problem as tight/sticky oil injector. Have you verified it is NOT the oil injector? Remember it only happens when the engine is very hot. Most people think it is an air leak but it is not.

Stay away from Stella speed or most stuff you read online. I hear all kinds of crazy stuff on scooter boards. (Unless you like chasing your tail) I heard this from Stella speed - "New oil makes my scooter really LOUD!" John B. said it best - "Loud oil saves lives!"

Yikes!
Back to top
View user's profile Send private message  
dmarquis
PostPosted: Sat Oct 15, 2005 4:12 pm  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

Hi Derrick,

No choke isn't on. I think the air box lid wasn't on very well. The reving issue is gone now that I reseated the seal and cleaned the lid. There were oily lumps of dirty that probably caused the lid not to seal very well.

I have 2 return springs on the carb slide so I don't think that was the issue. When I checked the plug this morning is was white!

So for now it is black/rich looking. The engine runs great. I went for about a 40 mile run today and no race/reving found. I did notice that the exhaust is really gassy smelling though and that leads me to believe that the carb is rich.

Ya I know what you mean about some of the poeple like you mention. I think it turned out to be a lose exhaust clamp that made the engine loud about the same time the guy filled his oil tank.

Dave
Back to top
View user's profile Send private message   Visit poster's website
Jeff
PostPosted: Sun Oct 16, 2005 6:02 pm  Reply with quote
Licensed


Joined: 19 Jan 2005
Posts: 477
Location: Minneapolis

Is it the stock carb? If all else is stock 102 is probably too rich for just a not-cat pipe. 95-96 maybe better.

And ditto to what Derrick says about stella speed. That place is an echo chamber for bad information.
Back to top
View user's profile Send private message   Visit poster's website
dmarquis
PostPosted: Sun Oct 16, 2005 6:28 pm  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

Here is what my plug looks like after I did a 100 mile run today.



I tend to take everything with a grain of salt, so to speak.

What do you think? Too rich still?

Dave
Back to top
View user's profile Send private message   Visit poster's website
Derrick
PostPosted: Sun Oct 16, 2005 7:45 pm  Reply with quote
Licensed


Joined: 19 Jan 2005
Posts: 771

No! It looks good. Slightly lean if anything. IMHO.
Back to top
View user's profile Send private message  
dmarquis
PostPosted: Sun Oct 16, 2005 8:35 pm  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

Thanks! I will leave well enough alone.

Dave
Back to top
View user's profile Send private message   Visit poster's website
dmarquis
PostPosted: Sun Oct 16, 2005 8:37 pm  Reply with quote
Licensed


Joined: 28 Jun 2005
Posts: 812
Location: St. Paul MN USA

How do you read the plug? Is it from the spark bar?

Dave
Back to top
View user's profile Send private message   Visit poster's website
Display posts from previous:   
All times are GMT - 6 Hours

View next topic
View previous topic
Page 1 of 1
minnescoota.com Forum Index  ~  Classifieds

Post new topic   Reply to topic


 
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum




Powered by phpBB and NoseBleed v1.09