Replacement fuel pump

Discussion in 'EFI/carb' started by husqdeeznutz, Jul 2, 2017.

  1. husqdeeznutz Husqvarna
    AA Class

    Location:
    CALI
    I'm trying to troubleshoot a fuel problem and I've pulled the whole fuel system out of the bike and watched the injector. It barely shoots any fuel out. I tested the pump with a guage in only got 30 psi when the pump primed. I saw a thread post this ebay pump:
    http://www.ebay.com/itm/New-Intank-...Parts_Accessories&hash=item2a1c1916a0&vxp=mtr

    I also saw the California Cycleworks pump mentioned. I was probably going to grab a regulator as well while I'm at it. Do you guys recommend the eBay one or the California Cycleworks? The bike is an 09 smr510
  2. Trenchcoat85 Husqvarna
    Pro Class

    Location:
    Northern NorCal
    Husqvarna Motorcycle:
    '14 TE 310R
    Other Motorcycles:
    '85 shovel, '75 DT400, '97 XR400
    alright, I'll jump in.

    if there is no restriction on the end of the fuel pump outlet, the fuel will just flow out without spraying- like a garden hose. And you should see a nice fine spray pattern out of the injector when it's actuated. Clean it with carb cleaner if not, and see if things improve.

    A pressure reading of 30lbs is pretty low, which might be the fuel pump; but it also has a pretty good chance of being the internal fuel line, filter, pre-filter, or regulator. take them out and inspect and test.

    If you're gonna replace the fuel pump on a whim, try one of the cheaper ($20) pumps maybe. Lotsa people have reported good results with California Cycleworks kits, but that's a $100 gamble. You should test your components first.

    what kind/year of bike are we talking about? what problem are you trying to solve (bike doesn't run or what)?

    good luck.
  3. husqdeeznutz Husqvarna
    AA Class

    Location:
    CALI
    Thanks for the reply and information. The bike is a 2009 SM510R and yeah doesn't run. I have spark but no fuel. I changed the filter and I did not see any leaks in the line when I tested the pump in a milk jug full of gas. I'm pretty sure the injector is messed up because I saw someone run the same test as me with even lower pump psi and it still had a decent spray. I did clean it with carb cleaner so I'm just going to replace it. It would be kind of hard for me to test the regulator. I suppose I could connect the pump directly to the fuel gauge and see if it is above 43psi. How are the ebay pumps longevity I don't want to get stranded and pumps aren't that fun to change.
  4. Trenchcoat85 Husqvarna
    Pro Class

    Location:
    Northern NorCal
    Husqvarna Motorcycle:
    '14 TE 310R
    Other Motorcycles:
    '85 shovel, '75 DT400, '97 XR400
    is this after the bike had been sitting a while or something? or is the injector clogged with particulates or chunks of a seal maybe?

    pump pressure test: if you can pressure test the pump, add the regulator to the circuit and test again. The numbers I believe you should see: 50+psi from the pump no flow; add the regulator in and I think it should read 43psi. Rereading your post- sounds like you figured this out.

    pump longevity: no idea- but for $20 it's worth a gamble. I would bet that 90% of all electric fuel pumps are made in China.

    I agree your problem sounds like the injector.

    if you wanna confirm it's a fuel system problem, spray starting fluid into the intake and start it up. It should light right up if so.
  5. Trenchcoat85 Husqvarna
    Pro Class

    Location:
    Northern NorCal
    Husqvarna Motorcycle:
    '14 TE 310R
    Other Motorcycles:
    '85 shovel, '75 DT400, '97 XR400
    hey nutz- how did things work out and what did you find was the problem?
  6. husqdeeznutz Husqvarna
    AA Class

    Location:
    CALI
    Hey sorry for the delay in the update haha. I wound up replacing the injector and the pump as well as the fuel filter. Used the Kawasaki OEM Part: 49033-0010 Injection Nozzle and the toyota fuel pump mentioned in other threads: ACD1300-TOY
    I got pretty weak fuel pressure and the injector spray pattern was bad. I guess that's what I get for letting the bike sit!
    Trenchcoat85 likes this.
  7. funmachines Husqvarna
    AA Class

    Location:
    Bay Area
    Husqvarna Motorcycle:
    2012 TE310
    Other Motorcycles:
    Husa FE570, Beta trials, CDale 440
    Something to keep in mind is the ethanol in gas can cause lots of issues if it sits too long. It can get gel-like. I use Stabil marine fuel stabilizer for any gas I buy for bikes and mix it into the fuel jugs. Motorcycle fuel injectors have tiny orifices and don't tolerate any blockage. Can block up small fuel filters too.