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I have a gx390 and I have a header on it and decided to make a muffler by packing fiberglass mat into a tube with a hole for the exit. I have taken out the fiber glass because I packed too much and the engine would not stay running. But now I have idle issues as in it idles when on half choke...

Today my dad gave me this moped I know nothing about it. Not even sure if it runs. But it will be my next project

I was given a generator that has a 216cc Briggs with electric start and I wanted to know the best place to buy a new crankshaft for it that is not tapered.

I have a Briggs 900 on a doodle bug and I have a vibration when I am at low speeds but when I open it up it goes away. Not sure if needs to be tuned or what it could be. Any ideas would help

I am going to put a gx390 in my doodlebug and I wanted to know what is the best clutch for it. I will be using the stock tire size which I think is 8" and I am looking for a decent speed around 45 or 50 at least more is better but still keep some low end power. I will also be building up the...

Hello everyone I bought a doodle bug for me and my kids to Cruze around the neighborhood in. Not sure of the model I'll post pics of it tomorrow after work. I bought it for 150 it's red and has some minor rust and has the original grafics on it. The guy that had it befor me put a Briggs 900 on...

This is my first build and I'm not sure which would be best for me to use. It will be a gx390 11in tall tires and I will mostly be on pavement possibly drifting a few corners if it's possible with the setup. It will be a kenbar streaker frame and this project is going to take a longtime to...

On a craigslist add I found 2 doodle bugs in good condition for 300. Is this a good price? If it is I might pick them up.

I have a honda gx390 and I believe I have a fuel issue. The engine will not start or try to start. I have spark because I replaced the cdi coil also I have fuel in the bowl. Any ideas would be very helpful. I will try to get the carb cleaned out tomorrow to see if that will help.

What would cause a 4 stroke to not spark?

So this is going to be my build. I just now bought a frame and most of you have seen the motor I have too. It's coming together slowly but I'm low in money so it will be a slow process.

I have a clone engine and was wanting to know what it is a clone of. It says engine family 5cpes.389e05. Not sure if that says what it is a clone of if so please tell me. It's 337cc and honda gx 390 gas tank and recoil start fit perfect on it.

I would like to know what this thing with two wires is that is on the bottom of my carb? And does it need to be hooked up or do I need a different carb.

When I get my gokart frame I will have a pull start at first and I was wanting to know how to wire it so I can see how it or if it runs.

My name is Paden and I'm building a gokart and need lots of help. So far I have a 337 cc motor. And I'm picking up a frame this coming week end. I hope I can complete it