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2 stroke carb cleaning
Topic Started: Feb 26 2013, 04:49 PM (1,008 Views)
jtmirolli
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OK, took the kids to the supercross race over the weekend and they are pumped about riding dirtbikes. Got a Suzuki 50 and Honda 80 that have been sitting in the garage for untouched for about 2 years. Ran fine when we put them up. The 50 will start but you go to give it gas and the engine dies out. Have not got the 80 to crank yet.

I assume that the gas has gunked up the carbs on both of them. Does anyone know of something that i can run through the one that starts to clean out the carb? I was going to squirt some carb cleaner in the 80 to see if I can get it to do anything. I was thinking of an external gas containor with some form of cleaner mixed in with some fresh gas to run through them to get some of the gunk out.

The local shop wants $140 per bike to get into the carbs, and i have 3 bikes that i want to get going again.

I know GG raves about SeaFoam :P but i was wondering if anyone had used other stuff that worked for them.

Thanks
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snowfish
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Basic GearHead

Sorry, no magic bullet for those small carbs. :shake Some of those jets are smaller than the size of a single strand of speaker wire unraveled. :O We're talking "frog hair" here, Mate. B-) Plus there's greenish, brownish, crispy tan, junk, dried to the bowl bottoms, needle, and seat. :smackface

Time to get a manual, or a buddy that's done it before, and dig in. :gamerz Total disassembley, soak carb housing in carb dip (I have used SeaFoam as a soak. Works good.), soak pilot jets, main jets, etc. in another can of dip, wait a day, remove part, spray carb cleaner through jets & carb body parts, blast with compressed air, and reassemble. :gamerz

If these really are 2 strokes, running even the one that runs, could have a partially clogged jet and cause a melt down. :die Not much better for a 4 stroke either. :shake Add an oil change, to the above, as a Must. :news

The best thing to run through the carb/EFI is pure gasoline. The best thing to run in the crankcase is pure oil. ^o)

A little Sea Foam, Techron, StaBil, etc is good for storage or a little preventative maintenance with moderation. Expecting all the VooDoo additives to fix stuff is just an illusion. :stoner

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Memphis metro


Just remove them from the engine and disassemble them and clean them and reassemble them and put them back on. What kind of bikes? Have any pictures of the carburators?
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snowfish
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Basic GearHead

You said "just". :smackface
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jtmirolli
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I can fiddle with other stuff but always been afaid of getting into carburators. That is the part that scares me. Botched up a 4 barrell on the car years ago so i try to stay away from the jets.

Got 3 different ones to get going again...
Suzuki JR50
Honda XR80
Suzuki RMX250
Edited by jtmirolli, Feb 26 2013, 08:29 PM.
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Stiffchezze
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Sir Metrologist

GOOD INFO SO FAR! :banana
The only thing for small 2-stroke carbs is to totally disassemble and clean. Don't be scarred, take you time and all will be well! :thumb
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BillHoo
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My Tomos Targa LX moped is two stroke. I had it sitting in the garage for 4 years with gas that old.

It wouldn't initially start.

I emptied the gas. Put fresh fuel in with a bit of seafoam. Sprayed carb cleaner in the carb.

Ensured the spark plugs were clean and poured a cap of seafoam in the spark plug well.

Then I pushed it around the yard 4 or 5 times to get the parts moving a bit. Lubricants start to circulate in the tight spots, etc.

Gave it about 10 cranks and it started up. No problems since then.
Edited by BillHoo, Feb 27 2013, 10:17 AM.
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Tinker1980
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It's not hard to clean a motorcycle carb. Get some stranded speaker wire, take the carb apart, and look through the jets. If they are blocked AT ALL you should run your single strand of wire through them. Then blow them out with some carb cleaner, then look through them again. Rinse and repeat until clean. If you do NOT do this, because it ran OK when you dumped some seafoam in it, then you will find that it's not getting enough fuel, and in the case of a two stroke, that means it's not getting enough oil... you will find yourself replacing rings as well as finally taking the carb apart and cleaning it properly.

Seriously, if you can keep a 20 year old Geo running, a little motorcycle carb is nothing at all.
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