85 spree carb and 87 aero carb

Lunytune · Post by **Lunytune** » Wed Aug 19, 2009 2:40 pm

Kenny_McCormic wrote:I test with compressed air, way safer to handle.

Bear45-70 · Post by **Bear45-70** » Wed Aug 19, 2009 3:15 pm

Kenny_McCormic wrote:I test with compressed air, way safer to handle.

Just how do you see air flowing thut the passage?

mousewheels · Post by **mousewheels** » Wed Aug 19, 2009 3:29 pm

I test with compressed air, way safer to handle.

We could design a nice test for the pilot jet with air.

Take a calibrated volume container, pump it to a known pressure, connect to the pilot and measure time to leak to an endpoint pressure. That would detect a partially vs fully open jet.

Another use of the test is to answer a question I've had - did Keihin use different sizes of pilot jets in various models of carbs in the Spree/Elite/Aeros?

Kenny_McCormic · Post by **Kenny_McCormic** » Wed Aug 19, 2009 3:39 pm

I feel for flow on the other side/see bubbles or mist of cleaner. Carb clean has this nasty tendency to strip the oil out of your skin, among other things. I dont like to spray it around when I don't have to.

Bear45-70 · Post by **Bear45-70** » Wed Aug 19, 2009 3:56 pm

Kenny_McCormic wrote:I feel for flow on the other side/see bubbles or mist of cleaner. Carb clean has this nasty tendency to strip the oil out of your skin, among other things. I dont like to spray it around when I don't have to.

That is why WD-40 works so well for this test. Never deal with carb cleaner without wearing rubber gloves, well acutally they aren't rubber anymore. You are aware the air will flowthru a partially pugged passage when a liquid will not. It's this density stuff and surfaced tension.

Wheelman-111 · Post by **Wheelman-111** » Wed Aug 19, 2009 4:33 pm

Greetings:

MouseWheels poses the Q:

Another use of the test is to answer a question I've had - did Keihin use different sizes of pilot jets in various models of carbs in the Spree/Elite/Aeros?

No knowledge but speculation that idle speed demands don't vary enough between engines to justify the tooling. Different starting specs for setting the idle mixture screw suggest that the pilot jet is the same for all.

mousewheels · Post by **mousewheels** » Wed Aug 19, 2009 4:52 pm

Wheelman-111 wrote:Different starting specs for setting the idle mixture screw suggest that the pilot jet is the same for all.

Agreed, my opinion is the pilot jet is the same, it's an activity to motivate me or someone else to verify it.

Wheelman-111 · Post by **Wheelman-111** » Wed Aug 19, 2009 5:09 pm

Greetings:

Might be an easier way:
1. Block hole from the venturi side. Maybe just a pencil eraser or tiny monkey finger. Whichever one you have handy.

2. Hook up Mity-Vac pump to the standpipe.
3. Preset to a given vacuum (negative) pressure.
4. Release hole.
5. Time to return to atmospheric pressure.

Lunytune · Post by **Lunytune** » Wed Aug 19, 2009 5:44 pm

Carb clean has this nasty tendency to strip the oil out of your skin, among other things. I dont like to spray it around when I don't have to

Granted, there are some brands which burn like lighter fluid. I've been using "Gum Out" which is not as mean, but still does the job. I don't know that the other brand works any better.

tw39515 · Post by **tw39515** » Wed Aug 19, 2009 9:41 pm

well got he new used carb in today got it running have to use throttle to start it. idle screw still alomost all the way in to get it to idle. rode all over the golf course starting and stopping no problems. i get home shut it off and wont start until it cools off. got to get a compression test this weekend. inspected reed valves look ok. it just stumps me why idle needle in so far.

tw39515 · Post by **tw39515** » Fri Aug 21, 2009 6:47 pm

bump anyone?

mousewheels · Post by **mousewheels** » Fri Aug 21, 2009 7:13 pm

tw39515 wrote:today got it running have to use throttle to start it.

Holding open the throttle to get it to run means its rich when cold. Run the bystarter air checks, if when cold, the air valve portion is not open, it will be too rich. Also, I know your float and needle have gotten a good looking over, but a high bowl level is another cause for being rich. Have you checked the float height? Manual says 0.48". Maybe some p/o got a bad float (needle actuating ledge bent) or wrong needle in there?

reststop · Post by **reststop** » Mon Aug 31, 2009 7:54 am

I just bought a Spree with a lot of miles and did not run when I got it. Clean carb and got it running with many of the same symptoms. Would only start with idle screw almost all the way in then would sort of run for a while then die and wouldnt restart. Finally did a compression check and it was less than 50psi. Amazing it even ran. Pulled cylinder and it is badly scored and 1 ring is frozen. Going to install big bore kit.

rest

pudgey3 · Post by **pudgey3** » Wed Dec 09, 2009 11:14 pm

I also have carb issues and will try to clean one more time before I give up. I plan to carefully clean the primary jet pictured in the first photo. Can you tell me where gas should be exiting when the jet is clean. I have pushed liquid and air thru the openng but see nothing exiting
Thanks

Honda Spree and Elite 50 Forums

85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb

Re: 85 spree carb and 87 aero carb