Honda Spree and Elite 50 Forums

Yes it's one thing on the list when getting a new-to-you scooter that's not running. Well, don't run it without an exhaust! It can cause serious damage to your piston and cylinder! You could carefully try pouring small amount drain-o to get it loosened up then use coat hanger and wear protective eye, face, hands and body gear. Use the wire from the small end only, as the larger end may be very weak or rusted badly so you don't want to poke any holes in it by accident. Rinse afterwards and let it dry before attempting to install and run it. Good luck on that! Glad you got it to fire! Be sure to check for leaking exhaust connection to cylinder before riding. You would be able to hear it if it's leaking when revving up.

Cook it on a bon fire. Some people use a BBQ but I tried it once...never would eat food out of that BBQ again.

Just let some purple zep degreaser sit in it for a while, then flushed it with a garden hose. Honestly, the pipe is in amazing condition! There was a dirt dobber nest in the end. That popped out and it’s clear! Slapped it back on and rode a happy 30mph around the neighborhood. Onto bigger and better problems now, like where the f do I get an electric starter for an sb50???

Just rebuild it

Slaserj wrote: Mon Aug 26, 2019 6:30 pm Well, it runs! And surprisingly, nobody here has posted the answer. I'm currently banging my head against the wall. Here it is: the exhaust was clogged.

I've run into that 3x IRL, once on a moped and twice on cars. It's the last thing that gets checked and should be higher on everyone's list I guess.

I've heard best results from starting a small campfire and cooking it out, but have never done it myself. All other solutions appear to be inferior. Just don't overcook it and melt it.

https://www.mopedarmy.com/wiki/Cleaning ... e_Campfire

God bless you Slaserj. Super glad I found this post!!

Have an '88 SA50 basketcase I'm trying to get going, and it has had me stumped! Hit all the usual suspects, carb, top end re-gasketed and re-sealed (had 80psi initially, but was not the only culprit) weepy stator crank seal replaced. 7psi leakdown held no problem, now 130psi compression, plenty. nice bright spark, and def getting fuel. but NO start!! the faintest puff, at any throttle setting, is all I was getting. Dam near was ready to throw in the towel on this one, after blowing 2-3 weekends messing with this thing already.

Went thru noiseguy's, fantastic wikispreedia write up of "getting a dead scooter back on the road"
https://hondaspree.net/wiki/index.php/G ... n_the_Road

The exhuast is #5 on the "The bike won't start, now what?" list, and since air WAS blowing thru it during leakdown test (before blocking off) I mistakenly took it to be good and a non-issue.. too soon junior !!

And then I came upon this thread. And the way you wrote about bugs potentially get into the exhaust and making a nest.. well, made me think of when i cracked open the CVT cover on this one, it was infested with mud dobbers and other crud, worse than any scooter I have ever seen prior!! what IF they also got into the exhaust as well?!? Swapped to a spare known good AF05e pipe last night, and wala SHE RUNS !!! so freakin stoked

so altho this is a 5 yr old post and you may not be around, god bless you for sharing your struggles and efforts on these forums. they have helped another!