Honda Spree and Elite 50 Forums

gliderbuff wrote:Put in new By Starter thinking that would take care of things. Nope... still the only way it wants to run now is to remove By Starter completely and plug the hole. Only will go 25 mph top otherwise it runs ok... Somebody help me if they know.. Seems this will inrich the mixture. pouring raw fuel via the jet in the carb bowl up the siphon tube and into the carb venturi. That being the case then air is creeping in somewhere that i have been unable to find thus far. Compression is 125 psi. Any suggestions?

Your first problem is you don't know carbs and your second is you don't know how the bystarter system works.

To enrichen (not inrich) the fuel and air mixture for cold starts, the bystarter draws fuel into the bystarter bowl FROM the float bowl, thru it's own special tube having nothing to do with any jet in the carb except the bystarter needle seat. From the bystarter bowl the fuel and air mixture is drawn into the intake, but only when the needle is retracted. So either you needle is not extending or not extending far enough.

Interesting post. But how is it you suppose that with the Bystarter out of the system the thing runs fairly well an with it installed it won't run at all. This will put more fuel into the engine as the needle in the Bystarter leans out the mixture once the engine warms. It is a Honda Spree... not sure I mad that clear. Just checked the service manual. Seems that there is an o ring missing that is at the base of the Auto Bystarter... that could have a lot to do what is going on there... Are you familiar with the Resistor that referenced on p. 4-5 of the shop manual?

gliderbuff wrote:Interesting post. But how is it you suppose that with the Bystarter out of the system the thing runs fairly well an with it installed it won't run at all. This will put more fuel into the engine as the needle in the Bystarter leans out the mixture once the engine warms. It is a Honda Spree... not sure I mad that clear. Just checked the service manual. Seems that there is an o ring missing that is at the base of the Auto Bystarter... that could have a lot to do what is going on there... Are you familiar with the Resistor that referenced on p. 4-5 of the shop manual?

Because the bystarter default position is fuel on, even with a missing o-ring it is gonna suck fuel into the intake. Oh and I've had my Spree since 1985.

You are right. the O ring isn't my problem... I am looking elsewhere. I think I have a fuel problem.. And I suspect some pretty basic suspects. First is the needle and seat of the float the float itself.... I see the specs on that in the manual.. Or the diaphragm in the fuel shut off is only partially working allowing enough fuel for the engine to run but passing to little fuel for the engine to run at higher loads and rpm. Will report back ....

whether the missing O-ring on the bystarter is your problem or not you should have one on there otherwise it can create a vacuum leak. My Spree was HARDDDDD to start with a broken and worn out o ring

Mystic wrote:whether the missing O-ring on the bystarter is your problem or not you should have one on there otherwise it can create a vacuum leak. My Spree was HARDDDDD to start with a broken and worn out o ring

You really have no clue about how a carb works, Much less they bystarter. The bystarter is a vacuum leak or it could not suck fuel into the engine. Oh and the bystarter needle only shuts off the fuel, not the air.

I hate to troubleshoot by exchanging parts but have a new carb coming my way and if that doesn't fix it i suspect the fuel shut off valve under the gas tank... I can create a vacuum and make the gas flow from the fuel line so i suspect a marginal needle and seat in the existing carb and think the new carb will fix things up.. Like my old friend used to say it is "just some little ole somthing" between this thing running great and not running well at all...