OEM Fuel Pressure Regulator modification

[Philb]

After fitting a fuel pressure gauge I’m getting a fuel pressure reading of less than 30psi (static) and it’s not moving if I rev the throttle so I suspect that my FPR is not playing nicely.
(I have an aftermarket pump fitted… not sure what make as it came with the bike & there’s no ID on it…. It looks like a Walbro…. All hoses are new & in good condition.

Does anyone have photos or a ‘how to’ on modifying an OEM FPR for manual adjustment?
I have tried searching the forum but some of the photo links are dead as they were from way back…

Thanks in advance,

Phil

[Swiftandswank]

Keep in mind that the fpr is boost dependent, so just reving the engine is not likely going to change fuel pressure much.

[Philb]

It’s not achieving anything like what the manual says.

[Philb]

Okay…

Anyone got any decent photos of a none OEM fuel pressure regulator fitted to their bike?

TIA,

Phil

[racink]

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I have had that for years ...

[riturbo]

Okay…

Anyone got any decent photos of a none OEM fuel pressure regulator fitted to their bike?

TIA,

Phil

Theres a few on george w build thread .

viewtopic.php?t=14650&start=270

[rangeroy]

Is it a ebay pressure gauge or reputable company one?

[Philb]

I’ve ordered a Malpassi FPR…

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I’ll put some photos up once I’ve got it fitted & working.
I’ll probably paint it black to ‘blend in’.

[Philb]

Fitted the Malpassi fuel regulator under the tank where there is plenty of room.
I decided not to mount it under the injector body as it was too tight a fit, adjustment would be difficult & it looked shite tbh.
I used two P-Clips to attach the regulator to the frame and rerouted the fuel pipes & vacuum pipe.
Adjustment of the regulator is easy enough as you just lift the tank slightly to adjust the regulator.

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