Hey, first post here and it's another Honda joker 90cc Scooter question. First I love this Scooter and I really need to forget best way, cheapest way, best option to fix it. I want riding down the road, no problems and it just died idling down little hill. From then it just cranks and cranks. But wont start. It turns over n over till battery dies. Lol. So I had a guy look at it and he said. Need new engine you have no compression. He pulled of muffler and only35lbs of pressure instead of 90lbs as he said. Now it's a rare Scooter. Parts are hard to come by. Its a two stroke And it mixes oil with the gas by itself. It ran like a champ. The only problem it ever had was a hole in the muffler. And where it connects to the engine, I guess its the manafold gasket. Anyway sorry for being a noob but I cant find any answers on if I really need a new engine. I mean its a honda and with like 5000miles I think. Or if I have other options to tell this guy looking at it cause he's all I have right now to work on it. Maybe a bore kit? Or another reason it was won't start? Just cranks n cranks like it wants to start but doesn't. Checked gas, new plug, fuses good. Fuel filter is good. After my self diagnosis, which is limited I was going for carb adjustment /clean next or automatic choke . He checked engine compression and quickly said needs new engine no compression. He works on golf carts for a living. Am I screwed? How are can I get this thing called running again. Thx alot.
hello, compression question.
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You said that you coasted down long hills? When you shut off the throttle, you shut off the lube oil to the cylinder & rest of the engine. Besides your cylinder being bad, you’re crank may also be damaged.
Whenever you go down hills etc., it’s important that you keep stabbing the throttle some to keep the lube oil coming. A plus for oil injection, especially for people who don’t understand 2strokes.
Whenever you go down hills etc., it’s important that you keep stabbing the throttle some to keep the lube oil coming. A plus for oil injection, especially for people who don’t understand 2strokes.
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Also with oil injection, two things:
1. Always make sure you have just a tad more oil than fuel in your tanks -OR- always have MORE oil in the oil tank than required for the tank of fuel. Then you can top-off oil at every fill-up and you'll never run her oil-less.
2. Make sure you're using an oil that's for oil-injection. Some specifically are for injection, some for pre-mix, and some are okay for both types.
Hopefully you just stuck a ring and it did minimal damage. Won't know until you pop off the head and/or take a gander at the cyl through the exhaust and intake ports. A bore job will be $60-$90 depending on shop and what's required to prep it for bore (e.g. stud removal, etc). No idea about piston kit cost if this is a rare 90cc engine. Call Mike & Frank @ American Pickers! lol
If your crank & cases took a beating from whatever fell out of the top-end, you're potentially looking at a total loss -- either the whole thing is junk, or its simply cheaper to get a new-to-you engine than it would be to repair the damaged one.
1. Always make sure you have just a tad more oil than fuel in your tanks -OR- always have MORE oil in the oil tank than required for the tank of fuel. Then you can top-off oil at every fill-up and you'll never run her oil-less.
2. Make sure you're using an oil that's for oil-injection. Some specifically are for injection, some for pre-mix, and some are okay for both types.
Hopefully you just stuck a ring and it did minimal damage. Won't know until you pop off the head and/or take a gander at the cyl through the exhaust and intake ports. A bore job will be $60-$90 depending on shop and what's required to prep it for bore (e.g. stud removal, etc). No idea about piston kit cost if this is a rare 90cc engine. Call Mike & Frank @ American Pickers! lol
If your crank & cases took a beating from whatever fell out of the top-end, you're potentially looking at a total loss -- either the whole thing is junk, or its simply cheaper to get a new-to-you engine than it would be to repair the damaged one.
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Very good info indeed!
Thx guys. Yeah I ran it full throttle alot. Since it only did about 50mph. As I turned off main road I just drifted down a small hill. And the oil just had a tank that mixed itself I assume I always kept full. The silver bottle 2stroke oil from gas station is what I always used.. I forget the name. But yeah it's a rare Scooter for sure so any parts I hope I can find let alone someone to fix it. Lol. Thx for info guys. Any links or help on the Honda joker 90cc Scooter srx90 . Never sold in u. S. Let mean know. Thx.
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