Piagio Zip 50 running problems - SV650.org

Kenzie · 28-06-13, 06:44 PM

A colleague at work has a Zip 50 for running around town. He is having trouble getting it to run properly. When you open the throttle it will pull off ok but anything near 30mph it starts to bog down. It's had a new piston and rings plus gasket set. He has tried changing the carb and fiddling with the settings. Bad points: Air box has a small hole in it and the choke is missing it's o-rings. Do you think it's an air leak or carb set up issue? It has a good spark, is getting fuel. He has changed the jet as well. A new air box is on the way but we are running out of ideas.

***sorry wrong section, mods please move to bike talk and issues***

Biker Biggles · 28-06-13, 07:12 PM

They are restricted to 30 mph as standard.Has it been derestricted?

Kenzie · 28-06-13, 07:30 PM

Not too sure. I know it doesn't have the secondary airbox attached to the exhaust.

Biker Biggles · 28-06-13, 08:03 PM

I vaguely remember there is something in the transmission that caps the speed but Im not really sure.

28-06-13, 09:33 PM

I think itll be the restrictor, unless its a new issue...any 50 is usually restricted to 30mph from stock

Kenzie · 29-06-13, 07:11 AM

It's hard to explain what it does. When pulling off on a near full throttle, if you close it and reopen it the engine will bog to the point of stall. It also struggles going up hills as well.

yorkie_chris · 29-06-13, 07:19 AM

50 scooter struggling going up a hill, really?

Has he considered setting fire to it?

You know slide carbs can bog down if given a big handful anyway? Especially if a bit lean. I'd definitely sort the hole in the airbox and the choke O rings to make sure it isn't sucking air.

Kenzie · 29-06-13, 07:36 AM

So he needs to be gentle on the throttle basically? I had suggested lighting it up already.

29-06-13, 07:58 AM

Ive got a scooter that i bought to fix and sell on, and it too seems to bog down if you go to WOT from standing, think they need to be eased in. They are crap tho..

Dave20046 · 29-06-13, 10:50 AM

If it seems to lose momentum on full throttle it could be squared off rollers in the variable transmission, or that was a problem I found with my old scooter anyway

28-06-13, 06:44 PM	#1
Kenzie Member Join Date: Feb 2011 Location: Ipswich, Suffolk Posts: 820	Piagio Zip 50 running problems A colleague at work has a Zip 50 for running around town. He is having trouble getting it to run properly. When you open the throttle it will pull off ok but anything near 30mph it starts to bog down. It's had a new piston and rings plus gasket set. He has tried changing the carb and fiddling with the settings. Bad points: Air box has a small hole in it and the choke is missing it's o-rings. Do you think it's an air leak or carb set up issue? It has a good spark, is getting fuel. He has changed the jet as well. A new air box is on the way but we are running out of ideas. *sorry wrong section, mods please move to bike talk and issues* __________________ Flickr https://www.flickr.com/photos/39887875@N06/

28-06-13, 07:12 PM	#2
Biker Biggles Member Mega Poster Join Date: Jan 2005 Location: Barnet Herts Posts: 5,071	Re: Piagio Zip 50 running problems They are restricted to 30 mph as standard.Has it been derestricted? __________________ On a clear day we stand there and look further than the ordinary eye can see.

28-06-13, 07:30 PM	#3
Kenzie Member Join Date: Feb 2011 Location: Ipswich, Suffolk Posts: 820	Re: Piagio Zip 50 running problems Not too sure. I know it doesn't have the secondary airbox attached to the exhaust. __________________ Flickr https://www.flickr.com/photos/39887875@N06/

28-06-13, 08:03 PM	#4
Biker Biggles Member Mega Poster Join Date: Jan 2005 Location: Barnet Herts Posts: 5,071	Re: Piagio Zip 50 running problems I vaguely remember there is something in the transmission that caps the speed but Im not really sure. __________________ On a clear day we stand there and look further than the ordinary eye can see.

28-06-13, 09:33 PM	#5
stuR Guest Posts: n/a	Re: Piagio Zip 50 running problems I think itll be the restrictor, unless its a new issue...any 50 is usually restricted to 30mph from stock

29-06-13, 07:11 AM	#6
Kenzie Member Join Date: Feb 2011 Location: Ipswich, Suffolk Posts: 820	Re: Piagio Zip 50 running problems It's hard to explain what it does. When pulling off on a near full throttle, if you close it and reopen it the engine will bog to the point of stall. It also struggles going up hills as well. __________________ Flickr https://www.flickr.com/photos/39887875@N06/

29-06-13, 07:19 AM	#7
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Piagio Zip 50 running problems 50 scooter struggling going up a hill, really? Has he considered setting fire to it? You know slide carbs can bog down if given a big handful anyway? Especially if a bit lean. I'd definitely sort the hole in the airbox and the choke O rings to make sure it isn't sucking air. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

29-06-13, 07:36 AM	#8
Kenzie Member Join Date: Feb 2011 Location: Ipswich, Suffolk Posts: 820	Re: Piagio Zip 50 running problems So he needs to be gentle on the throttle basically? I had suggested lighting it up already. __________________ Flickr https://www.flickr.com/photos/39887875@N06/ Last edited by Kenzie; 29-06-13 at 07:38 AM.

29-06-13, 07:58 AM	#9
stuR Guest Posts: n/a	Re: Piagio Zip 50 running problems Ive got a scooter that i bought to fix and sell on, and it too seems to bog down if you go to WOT from standing, think they need to be eased in. They are crap tho..

29-06-13, 10:50 AM	#10
Dave20046 Member Mega Poster Join Date: Jul 2008 Location: Sheffield Posts: 10,274	Re: Piagio Zip 50 running problems If it seems to lose momentum on full throttle it could be squared off rollers in the variable transmission, or that was a problem I found with my old scooter anyway __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Hello and running problems.	bigcookie	SV Talk, Tuning & Tweaking	7	03-05-11 06:07 PM
Running Problems	FlyinCustard	SV Talk, Tuning & Tweaking	28	24-10-09 04:36 PM
running problems maybe?	kwak zzr	SV Talk, Tuning & Tweaking	14	16-06-07 10:47 PM
Running problems	watto	SV Talk, Tuning & Tweaking	4	10-11-06 11:54 AM
Running Problems	Marshall	SV Talk, Tuning & Tweaking	22	09-10-06 09:27 PM