codge Scooter Rider
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Number of posts : 16 Location : Southampton UK Points : 4791 Registration date : 2011-08-24
![Fuel Pressure Regulator Empty](https://2img.net/i/empty.gif) | Subject: Fuel Pressure Regulator Wed Nov 22, 2017 10:39 am | |
| Hi All Still trying to fix my non running Swing. Reading some of the previous posts about things to check, I got around to the FPR. I read that if the diaphram has hole(s) in it, then a new one is required. After removing it from the fuel rail, I cant even see the diaphram. The FPR does not come apart. All I can see is a thimble like piece with two machined slots in it. Other than that there is nothing to see. Can anyone tell me how they have seen a faulty perforated diaphram. Many thanks, Codge |
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The Bern Silver Wing Expert
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![The Bern](https://2img.net/u/3413/63/00/33/avatars/3758-23.gif)
Number of posts : 897 Location : Telford, UK Points : 4556 Registration date : 2014-11-20
![Fuel Pressure Regulator Empty](https://2img.net/i/empty.gif) | Subject: Re: Fuel Pressure Regulator Wed Nov 22, 2017 12:04 pm | |
| Hi bud, FPR is a non serviceable componant, but very simple in it's operation, basically, it uses vacuam to hold a diaphragm (which is normally closed) open, perferations in the diaphragm will obviously allow the vacuam to escape, thus the malfunction. Ideally you would use this ... https://tinyurl.com/ya9f3z79 ... or similar to test how well it holds vacuam, for a rough guide you could just suck on the pipe
Last edited by The Bern on Wed Nov 22, 2017 12:13 pm; edited 2 times in total (Reason for editing : Shortened hyperlink with tinyurl) |
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The Bern Silver Wing Expert
![Silver Wing Expert Silver Wing Expert](https://2img.net/i/itest/ranks/stars/stars16.gif)
![The Bern](https://2img.net/u/3413/63/00/33/avatars/3758-23.gif)
Number of posts : 897 Location : Telford, UK Points : 4556 Registration date : 2014-11-20
![Fuel Pressure Regulator Empty](https://2img.net/i/empty.gif) | Subject: Re: Fuel Pressure Regulator Wed Nov 22, 2017 12:11 pm | |
| Also it might be an idea to check that the vacuam pipe is in good order, as a cracked/perished pipe will not operate the FPR correctly |
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codge Scooter Rider
![Scooter Rider Scooter Rider](https://2img.net/i/itest/ranks/stars/stars17.gif)
Number of posts : 16 Location : Southampton UK Points : 4791 Registration date : 2011-08-24
![Fuel Pressure Regulator Empty](https://2img.net/i/empty.gif) | Subject: FPR Wed Nov 22, 2017 4:55 pm | |
| Hi The Bern I will do a bit of vacuum pipe sucking tomorrow, and give the pipes a good check over. I was told by a Honda mechanic that the FPR will be defective if the vacuum side of it has fuel in the pipe. It should be dry. Mine was dry when I checked earlier today. However, I will look at them again. My suspicion is still the petrol pump or the filter, but its so invasive I am leaving that to last. Thanks anyway. |
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Siataukreg Super Scooter Rider
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Number of posts : 221 Age : 70 Location : uk saddleworth Points : 3957 Registration date : 2014-08-24
![Fuel Pressure Regulator Empty](https://2img.net/i/empty.gif) | Subject: Re: Fuel Pressure Regulator Fri Nov 24, 2017 7:46 pm | |
| - codge wrote:
- Hi The Bern
I will do a bit of vacuum pipe sucking tomorrow, and give the pipes a good check over. I was told by a Honda mechanic that the FPR will be defective if the vacuum side of it has fuel in the pipe. It should be dry. Mine was dry when I checked earlier today. However, I will look at them again. My suspicion is still the petrol pump or the filter, but its so invasive I am leaving that to last. Thanks anyway. If you need any of those parts i have them having broken up three scoots get back to me |
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