Bike was working but not getting enough fuel pressure so I replaced the fuel pump. After I put everything back together the fuel pump comes on but I'm not getting any fuel to the fuel rail.... please help!!!
That sounds like a clogged main filter. The pump motor may have been fine (they're fairly robust). The bike will run but will bog down at elevated RPMs and throttle. You diagnose it with a flow test.
"comes on but I'm not getting any fuel to the fuel rail"
That sounds like either a kinked fuel line or a missing/damaged rubber bushing between the pump motor outlet and the main filter, which is probably what John was referring to. The bushing can be damaged if things are put together without any lubrication. A pressure test is more appropriate but, in view of your first symptom, you really ought to do the flow test too. Since you had things apart, I'm assuming that the strainer is OK.
As a few people already said sounds like a clogged fuel filter. It is possible for a pump to go partially bad and the pump runs but is no longer capable of making pressure but not likely. After cleaning your filter you could run a pressure and volume test.
When I took the old fuel pump off I blew through the main filter so I don’t think it’s clogged up. When I take the fuel line off gas comes out of the fuel line but no pressure at all. Think it could be the regulator.
In the very beginning the bike would not turn over 9 or 10 thousand rpms. After a couple weeks it got to where it wouldn’t get over 7k rpm. I took the pump apart to clean the “sock” filter and when I put it back together no difference. After a day or so it got to where it would only turn 5 pr 6 thousand rpm. Then I took it apart cleaned the whole assembly again and ordered a fuel pump off eBay. I put it all back together and the fuel pump will come on or whine but I’m not getting fuel pressure. I just ordered a new pressure regulator because the old one looks haggard. I’m wondering if the fuel pressure regulator is stuck open thus causing the bike to have no pressure. The o-rings were a little old looking so I bought new o-rings also. So basically new o rings new pump cleaned everything up and blew through the high pressure filter “ the black filter”. Like I literally put my lips up to it and blew through it. Now it want get pressure. The pressure regulator will be here tomorrow so I’m gonna try that. Any other suggestions??
Suzuki normally bundles the regulator with the main filter so if you bought one, that sounds like aftermarket. Because of the price of the main filter, you really ought to be performing the above recommended tests before replacing parts. The pressure test would pick up whether the regulator was faulty. Strainers/socks can get crappy, in which case they need to be cleaned or replaced. But the sort of problems that you're having are more commonly with the main filter.
I'm willing to bet the o-ring that connects the regulator to the unit is not sitting right. In my repair manual they specifically states do not remove regulator. Depending on year of bike the regulator can slip off & leave you stranded.
To answer your question you can test the regulator but attaching a gauge to it & add pressure with a compressor. Regulator should open up at the designated pressure.
My regulator kind of just sits on top of the pump there is no o ring there. The pump came with 2 hose clamps and a piece of fuel line which I put on and it’s tight. The O-Ring on the regulator is on the back and it goes into the main filter. Then there is one on the bottom of the main filter where it fits onto the assembly base. Both o rings are new. How do I go about testing pressure and volume? I don’t have the tools to do it with but I will go get them.
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