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  #1  
Old 12-20-2016, 06:10 PM
DarkWolf2k DarkWolf2k is offline
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Default Engine won't start.

80cc 100$ HT kit I'm guessing. Trying to help a friend get his started. Had a couple problems with it but nothing I couldn't figure out up to this point. Anyway. The thread on his back tire was bare so he ended up switching it for the front which was heavily warped. It ran good for a while (about 3 weeks) before the chain snapped from the tire being warped I guess? Got that fixed and now the engine will start and run for a couple of moments (a good 5-10 seconds or so) before cutting out with the fuel off. As soon as you turn on the fuel the engine won't start at all. I'm thinking it's flooded from him trying to start it though I have no idea. Any help is appreciated. Thanks.
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  #2  
Old 12-20-2016, 06:18 PM
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Agreen Agreen is offline
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Default Re: Engine won't start.

Does fuel dribble out the intake with the shutoff open?
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Old 12-20-2016, 11:45 PM
crassius crassius is offline
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Default Re: Engine won't start.

can't think of anything turning fuel on could do except make it over rich - I'd check float
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Old 12-22-2016, 02:29 AM
DarkWolf2k DarkWolf2k is offline
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Default Re: Engine won't start.

I tried it again earlier today and noticed it only wants to do it's "start" when it's been sitting for a while which is odd. I have some time off for the next few days so I should have time to work on it.

@Agreen What do you mean exactly? It's got a small fuel leak on the gasket on the carb bowl from adjusting the float level initially when we first assembled and started to get things going. That's a matter of a little time of readjusting the gasket. It never seemed to sit right from the get go. Also; where the carb meets the intake there is an air leak (the common? one that's been documented on this site.)

@crassius I haven't checked the float since I had to adjust it initially. I'll check it sometime in the next day or so since I have some time off.

Last edited by DarkWolf2k; 12-22-2016 at 02:33 AM.
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Old 12-22-2016, 06:26 AM
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Agreen Agreen is offline
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Default Re: Engine won't start.

Crassius and I were hinting at the same thing. If fuel runs out the air filter area with the shutoff open, it probably needs the float lowered a little.

If the intake leaks, wrap some electrical tape around it and try again. Electrical tape is stretchy and can make a temporary seal to test it out.
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Old 12-22-2016, 12:40 PM
crassius crassius is offline
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Default Re: Engine won't start.

if intake is steel, then you may have a bit of chrome sitting at the end that doesn't let the carb slide on all the way - file the intake a bit at 45degre angle right at the end, then be sure the carb goes smoothly all the way on
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Old 12-22-2016, 07:51 PM
StevenMain StevenMain is offline
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Default Re: Engine won't start.

It's the carb float height... bend the carb tab to shut the needle off sooner.. pull the plug out.. pedal your ass off for 1 minute. Put it back together and enjoy
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Old 12-23-2016, 04:40 PM
DarkWolf2k DarkWolf2k is offline
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Default Re: Engine won't start.

After thinking about the storm that hit a few days ago I decided to check all the maintenance and normal things. Pretty sure water came out of the carb drain. I let all of this flow out of the drain. No me gusta. Also where the electrical wires goes into the magneto casing let water into the magneto casing. I took off the other side where the flower nut is and all that to check for water there as well but there's only maybe a single drop so I don't think it's the gasket on that side. It seems to be transferring from the other side. Is there any way to push any possible water out of the engine? Just flooding it and running around without the spark plug in?




@Agreen There's a little bit of fuel residue on the air filter. Basically the needle should shut off fuel from flooding the engine but this isn't happening is what you're saying I'm guessing. I've got some electrical tape lying around so I could try doing that. I was thinking about some sort of rubber car tubing or something to go around the air leak that crassius was talking about filing down. I do have a metal file though. I'll try turning on fuel again and see if it comes out of the air filter.

@crassius It's a very small ways from being all the way on and I do believe it's steel. I'll check with the friend to see if this is something he'd be willing to consider.
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Old 12-23-2016, 04:43 PM
StevenMain StevenMain is offline
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Default Re: Engine won't start.

Alright or ignore me completely despite the fact that it could fix you in litterally under 5 minutes .
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Old 12-23-2016, 04:51 PM
DarkWolf2k DarkWolf2k is offline
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Default Re: Engine won't start.

@StevenMain Sorry, I meant to reply to you as well. There was water coming out of the drain on the carb which makes me not want to try it until it's been flooded with gas a bit again. I think I'll probably work on getting the gasket done on the carb then try what you were talking about, then letting it go with a little gas, then doing it again.

@Agreen I turned the fuel on and let it go for about a minute. No fuel out of the air filter at all. Or any leaks besides the carb bowl gasket that I can tell.
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