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1984 NQ50 Ran when purchased but now doesn't.
Posted: Tue May 12, 2015 9:05 pm
by nickhammer
1984 Spree (no kick start)
Bought it running with weak battery & test drove it
Replaced battery
Test drove it down my street again, set tire pressure, test drove for 20 minutes. Did fine until pulling back into my driveway and it cut out on me (assuming I ran out of gas because the needle was dead empty) then filled a new tank with fresh gas and now wont start.
Replaced lines, rebuilt carb, new fuel filter, good spark, starter works, cleaned air filter, cleaned connections (no loose or broken wires), oil is coming from tank-line-pump properly, it's getting electrical power. When trying to start it seems like it wants to but it just doesn't turn over. I will add pictures and or video upon request.
Re: 1984 NQ50 Ran when purchased but now doesn't.
Posted: Wed May 13, 2015 1:29 pm
by motormike
Possibly the screen in the tank is plugged with rust and debris from running the fuel all the way down to empty.I didn't see you mention cleaning this screen.
Many other possibilities of debris clogging the system too.
Try running on auxillary bottle of gas to determine if it is the system before the carb, or is it the carb ?
Re: 1984 NQ50 Ran when purchased but now doesn't.
Posted: Wed May 13, 2015 2:08 pm
by patthesoundguy
Auxiliary fuel tank is a great idea there mike! Rules out lots of issues quickly. I say replace the spark plug as well. I've been burned by a bad plug a couple times. The plug would fire outside the cylinder but not when installed. Gap the plug to 0.025"
Re: 1984 NQ50 Ran when purchased but now doesn't.
Posted: Wed May 13, 2015 5:53 pm
by nickhammer
Many thanks guys! I will try this all and post an update. For some reason it wont let me post the video of me trying to start it so if anyone wants to see leave me your email and i'll send it over. It's been ages since i've had one and never had problems with my 86'
Re: 1984 NQ50 Ran when purchased but now doesn't.
Posted: Wed May 13, 2015 6:16 pm
by UltraFJ40
Hopefully it's just being problematic for you but only for a short time. A few months ago I was in a similar position as you and it was driving me crazy.
I took a breath, read these guys offerings, took another breath and re-tried everything again. In the end the little Spree is buzzing along just like it's supposed to.
Thanks again guys and good luck Nick. Stay patient my friend.
Re: 1984 NQ50 Ran when purchased but now doesn't.
Posted: Wed May 13, 2015 6:28 pm
by patthesoundguy
nickhammer wrote:Many thanks guys! I will try this all and post an update. For some reason it wont let me post the video of me trying to start it so if anyone wants to see leave me your email and i'll send it over. It's been ages since i've had one and never had problems with my 86'
You have to use a service like youtube or photo bucket to host the video and then paste the link in a post.
Re: 1984 NQ50 Ran when purchased but now doesn't.
Posted: Wed May 13, 2015 7:49 pm
by nickhammer
I cleaned the screen inside of the tank and put the petcock back in place with the lines, no fuel came out until I blew into the petcock and then it came rushing out but still didn't fire when I tried to start it after re installing the lines (reed looked pretty dry too after I inspected that area. I'm going to guess that my petcock is bad, luckily someone local has one for cheap.
VIDEO
https://www.youtube.com/watch?v=LeqQJY7 ... e=youtu.be
Re: 1984 NQ50 Ran when purchased but now doesn't.
Posted: Wed May 13, 2015 10:22 pm
by motormike
nickhammer wrote:I cleaned the screen inside of the tank and put the petcock back in place with the lines, no fuel came out until I
BLEW into the petcock and then it came rushing out but still didn't fire when I tried to start it after re installing the lines (reed looked pretty dry too after I inspected that area. I'm going to guess that my petcock is bad, luckily someone local has one for cheap.
You say fuel flowed when you BLEW into the hose...
it should only flow when you SUCK on the vacuum hose...
be very careful, but sounds like petcock may be faulty and not delivering fuel properly... 
VIDEO
https://www.youtube.com/watch?v=LeqQJY7 ... e=youtu.be
Re: 1984 NQ50 Ran when purchased but now doesn't.
Posted: Thu May 14, 2015 6:49 am
by nickhammer
Yes I blew INTO the petcock. To be honest I wasn't sure what was going to happen but I heard bubbles in the tank and then gas poured out when I stopped. I also assume some gunk might have came off the screen in the tank with the backwards flow that it's used to seeing.
Re: 1984 NQ50 Ran when purchased but now doesn't.
Posted: Wed May 27, 2015 6:16 pm
by nickhammer
New petcock is working correctly, cleaned the carb again. I poured a little gas in the cylinder and it bliped for a second and died (assuming because it used the fuel inside the cylinder I added) and is still doing the same thing. Any more input?
Re: 1984 NQ50 Ran when purchased but now doesn't.
Posted: Wed May 27, 2015 9:05 pm
by patthesoundguy
You need to open the float bowl drain screw then apply vacuum to the vacuum line and fuel should flow out of the carb drain if the petcock is setup correctly and all is right with the carb. Close the float bowl drain replace the vacuum line and crank the motor over with your fngers choking the air box inlet. It should start. It may not idle but should at least fire up if there is fuel in the bowl. Be sure to set the idle air screw to about 1&› turns or so out to get a base line.