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My Speedfight has no power, can barely go over 30?!

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bass2k8
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Joined: 13 Feb 2011
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PostPosted: 18:18 - 25 Mar 2011    Post subject: My Speedfight has no power, can barely go over 30?! Reply with quote
I have a Peugeot Speedfight 2 100 Prost, 01 plate. Basically, this has been a problem I have had before. I fixed it roughly 2 weeks ago by cleaning the air filter and it seemed to run fine, but when i tested it out it was kinda cold during the night.

Today riding to college it was running perfectly fine, if not better! When I arrived at college I noticed I had about 1 or 2 bars of petrol (out of 16 bars) so decided to go to get some petrol after college.

As I was riding to the petrol station I noticed it had hardly any power and I assumed this was because I didnt have much petrol in the tank, so I filled it full of petrol and the problem still occured. Then checked my oil level and it needed some oil so i filled that up and the problem still exists.

Do you think it could just be the heat causing this problem? Because it was quite a hot day today?

Basically this is the problem. When I turn the throttle about the 1/4 of the way it runs kinda normal, but if I turn it even more I get absolutely no power. It struggles to accelerate past 20/30 but once I get up to around 35 it accelerates up to 50/60 pretty normally.

I have made sure that the fuel tap tubes are correctly fitted so there not loose, and made sure that there is no bends in them. If I'm right, the fuel line is the top tube, and the vaccum is the bottom tube of the fuel tap?

Do you think Its really the air filter causing this problem, because I've only just recently cleaned it so it should be that dirty!!
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The Artist
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Joined: 06 Jan 2008
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PostPosted: 18:22 - 25 Mar 2011    Post subject: Reply with quote
Sounds like letting the fuel run low as let crap from the tank get sucked into the carb.

It will probably need a clean. Crap will either be in the carb or a filter beforehand.
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bass2k8
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Joined: 13 Feb 2011
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PostPosted: 18:27 - 25 Mar 2011    Post subject: Reply with quote
The Artist wrote:
Sounds like letting the fuel run low as let crap from the tank get sucked into the carb.

It will probably need a clean. Crap will either be in the carb or a filter beforehand.


Hmm that does make sense... how stupid of me letting it get that low....

My carb got cleaned just over a month ago, so there shouldnt really be any crap in there :S

Before I begin to clean the carb... I would like to know if there is any other reasons why it could do this. I have no idea how to clean the carb so I would rather prevent doing it haha, I do have a haynes manual though, but I dont wanna mess it up any more.
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The Artist
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PostPosted: 18:29 - 25 Mar 2011    Post subject: Reply with quote
By clean I mean make sure there is no crap in the fuel filter, pipes and jets inside the carb.

All you need to do is wash it out with petrol and make sure all passages are clear.
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bass2k8
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PostPosted: 18:29 - 25 Mar 2011    Post subject: Reply with quote
I have to say, I really love this forums. Theres such a good community here and you guys reply so quick!! Smile
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bass2k8
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PostPosted: 18:32 - 25 Mar 2011    Post subject: Reply with quote
I will have a read of the haynes manual and see if I feel confident in doing it. I will report back in a few moments Smile
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bass2k8
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PostPosted: 21:49 - 26 Mar 2011    Post subject: Reply with quote
I had a go at cleaning out my carb and now it doesn't start. started a new topic here: https://www.bikechatforums.com/viewtopic.php?t=217176
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Old Thread Alert!

The last post was made 13 years, 33 days ago. Instead of replying here, would creating a new thread be more useful?
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