Mechanic??? ....bike keeps dying... - Sportbike Forum: Sportbike Motorcycle Forums
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post #1 of 15 (permalink) Old 06-07-2007, 10:06 AM Thread Starter
OPP
 
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Angry Mechanic??? ....bike keeps dying...

My 86’ Spree will start up, let me drive it for about 30-60 seconds and then it stalls out even if I'm at full throttle. I’ve tried a few things and will list them, but I’m hoping someone has experience with these darn things.

Before purchase:
Sat for 2 years
Gas tank had rust in it
Battery was dead
Former owner said a shop told him it need a new oil pump

After purchase:
I ignored what he said and still put in gas, added a battery charger, and the thing fired up. Satisfied that it had enough potential to run, I got a new oil pump and gas tank. Next, I pulled off the carb and cleaned out the bottom bowl and one jet…the only apparent one that could be unscrewed and cleaned. I removed the existing and very-very dirt air filter and the fun began….

The moped started up, but died after a few minutes. To restart the moped and run it for 30-60 seconds, I have to do the following routine to get it restarted
1.) Remove the spark plug and clean it. It usually has an oily
residue
2.) Remove the carb and drain the bowl.
3.) Charge the battery


So, at least at the start of each ride, the engine is getting fuel, it has great spark, and with no air filter, it is getting plenty of air.
My questions…
1.) If the battery is charged enough to start up and run the
moped, would that really be an issue with keeping it running ?
2.) Should anything else be done to the carb?
3.) Short of parting it out or selling it to Almightys for a dollar,
what should I do next?
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Last edited by OPP; 06-07-2007 at 10:11 AM.
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post #2 of 15 (permalink) Old 06-07-2007, 12:32 PM
 
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to much oil? adjustment for the oil pump?

Starved for gas? runs until float bowl dries up then dies...
fuel supply or vent for gas tank clooged causing vapor lock?

Why does the batt need charging between starts? new batt needed? or problem with charging system?


those are my initial thoughts not being there or knowing that much about it

mb.
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post #3 of 15 (permalink) Old 06-07-2007, 01:03 PM
 
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Clean out the gas tank and carb again. put on NEW fuel lines and should prolly work for you. Make sure to clean all the jets in the carb.
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post #4 of 15 (permalink) Old 06-07-2007, 02:46 PM
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too rich too much oil, or bad rings due to high mileage fowling out plug.

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post #5 of 15 (permalink) Old 06-07-2007, 03:08 PM
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Quote:
Originally posted by Duner
...fowling out plug.
I hate it when those chickens mess with my plugs.




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post #6 of 15 (permalink) Old 06-07-2007, 05:36 PM
 
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Do you have a good ground on the battery? I've seen bikes die completely because of a bad ground to the battery; the fuel pump won't engage, relays won't "click", and none of the electronics will turn on.
If the gas tank had rust in it, I don't see why your ground couldn't be corroded as well.
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post #7 of 15 (permalink) Old 06-08-2007, 12:55 AM
 
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Needs rings dude...Do a compression test, your about 50psi to low
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post #8 of 15 (permalink) Old 06-08-2007, 04:12 AM
 
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Needs a powershot of nos to lean it out and keep the plug firing or just sell it to me for a $1.
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post #9 of 15 (permalink) Old 06-08-2007, 05:17 AM
 
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Quote:
Originally posted by 2E1gixxer
Do you have a good ground on the battery? I've seen bikes die completely because of a bad ground to the battery; the fuel pump won't engage, relays won't "click", and none of the electronics will turn on.
If the gas tank had rust in it, I don't see why your ground couldn't be corroded as well.
Who is this guy?

I have a feeling this guy has absolutly know idea what he is talking about.

Disreguard what he said, go with bogger.
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post #10 of 15 (permalink) Old 06-08-2007, 06:23 AM
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Re: Mechanic??? ....bike keeps dying...

Quote:
Originally posted by OPP
So, at least at the start of each ride, the engine is getting fuel, it has great spark, and with no air filter, it is getting plenty of air.
Maybe too much air.

If you're not living on the edge, you're taking up too much space.

If its a penny for your thoughts and you are putting in your two cents, hey someone's making a penny.

It may be that your sole purpose in life is simply to serve as a warning to others.
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