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Artureeh
L Plate Warrior



Joined: 28 Apr 2019
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PostPosted: 11:07 - 28 Apr 2019    Post subject: PGO Big Max Reply with quote
Hi, new member here, my name is Arthur.

I got a problem with my scooter, PGO Big Max 2008.
The scooter is great, but when i get on the road and have my throttle open, for the first 5 minutes it runs well, but after that it bogs and dies.
I let of the Throttle and for a while it is boggy, when i let it sit for a little bit, it turns normal.
Can any of you help me? Thanks.
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jaffa90
World Chat Champion



Joined: 06 Apr 2016
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PostPosted: 11:37 - 28 Apr 2019    Post subject: Reply with quote
Sounds like a slow fuel supply, is the tank cap covered with anything and does the fuel tap have a vacuum pipe as well as the fuel pipe ?
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Artureeh
L Plate Warrior



Joined: 28 Apr 2019
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PostPosted: 12:30 - 28 Apr 2019    Post subject: Reply with quote
jaffa90 wrote:
Sounds like a slow fuel supply, is the tank cap covered with anything and does the fuel tap have a vacuum pipe as well as the fuel pipe ?

Thanks for replying, there is only one pipe from the fuel tap, that goes to the carburator, and a filter is spliced into the pipe. Here is a photo, so it would be easier to undestand. https://files.fm/down.php?i=f4ftvbhj&view
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jaffa90
World Chat Champion



Joined: 06 Apr 2016
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PostPosted: 17:09 - 28 Apr 2019    Post subject: Reply with quote
I can see a plastic fuel pipe to a tap and a rubber pipe from the tap to an inline filter fitted the wrong way round.
Does fuel pee out of the pipe going into the carb?
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Artureeh
L Plate Warrior



Joined: 28 Apr 2019
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PostPosted: 19:13 - 28 Apr 2019    Post subject: Reply with quote
jaffa90 wrote:
I can see a plastic fuel pipe to a tap and a rubber pipe from the tap to an inline filter fitted the wrong way round.
Does fuel pee out of the pipe going into the carb?

Does the filter being upside down interfere with the fuel flow? I warmed up the bike a little bit, took of the seat, revved it a little bit, no leaks from the carburetor. Here is a video of me doing that, Video
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Easy-X
Super Spammer



Joined: 08 Mar 2019
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PostPosted: 19:24 - 28 Apr 2019    Post subject: Reply with quote
5mins and then dies...

The fuel is gravity fed from the tank (i.e. no pump) so as fuel drains out air needs to get in...

If you've left the bike for a while the pressure in the tank has probably had time to equalise. Ride off and you'll be gradually create a vacuum in there which will slow up the fuel supply.

A quick test would be to leave the fuel cap off (maybe jam a rag in there in case you hit a bump) and see if it does the same thing.
____________________
Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter
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Robby
Dirty Old Man



Joined: 16 May 2002
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PostPosted: 19:33 - 28 Apr 2019    Post subject: Reply with quote
Does it behave better when the tank is full?

Its odd to see a scooter with no fuel pump. Could be that it used to have one, which has failed and been removed, leaving a gravity feed. Fine when the tank is full, not when its almost empty.
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jaffa90
World Chat Champion



Joined: 06 Apr 2016
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PostPosted: 19:52 - 28 Apr 2019    Post subject: Reply with quote
Artureeh wrote:
jaffa90 wrote:
I can see a plastic fuel pipe to a tap and a rubber pipe from the tap to an inline filter fitted the wrong way round.
Does fuel pee out of the pipe going into the carb?

Does the filter being upside down interfere with the fuel flow? I warmed up the bike a little bit, took of the seat, revved it a little bit, no leaks from the carburetor. Here is a video of me doing that, Video


I mean remove the fuel pipe from the carb and check the fuel flow into a clean container without smoking and cold engine.

Last edited by jaffa90 on 21:04 - 28 Apr 2019; edited 1 time in total
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Easy-X
Super Spammer



Joined: 08 Mar 2019
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PostPosted: 21:04 - 28 Apr 2019    Post subject: Reply with quote
Robby wrote:
Does it behave better when the tank is full?

Its odd to see a scooter with no fuel pump. Could be that it used to have one, which has failed and been removed, leaving a gravity feed. Fine when the tank is full, not when its almost empty.


Just been working on a scooter today... gravity fed, no pump.
____________________
Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter
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Artureeh
L Plate Warrior



Joined: 28 Apr 2019
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PostPosted: 17:52 - 01 May 2019    Post subject: Reply with quote
HardlyDavidson wrote:
5mins and then dies...

The fuel is gravity fed from the tank (i.e. no pump) so as fuel drains out air needs to get in...

If you've left the bike for a while the pressure in the tank has probably had time to equalise. Ride off and you'll be gradually create a vacuum in there which will slow up the fuel supply.

A quick test would be to leave the fuel cap off (maybe jam a rag in there in case you hit a bump) and see if it does the same thing.

I took off the fuel pipe, the gas was poring out kinda slow, i took the pipe off of the fuel cock and it is poring nicely. Now i put a new pipe from the tank to the carburator and it works fine now. Thanks for all of your suggestions. Thumbs Up
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- Arthur
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Easy-X
Super Spammer



Joined: 08 Mar 2019
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PostPosted: 18:40 - 01 May 2019    Post subject: Reply with quote
Nice! If you could take the time to add "- FIXED" to the subject line of the original post it helps out ppl looking at similar problems in the future Thumbs Up
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter
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Old Thread Alert!

The last post was made 6 years, 279 days ago. Instead of replying here, would creating a new thread be more useful?
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