bunch of bad chineese pumps

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  • crosbyman

    Canada Member - 2 Years
    Replies: 2229
    Topics: 233
    #243739

    just FYI… tried to get a nice 10hp Evinrude going this week (modified it last winter for a pump on a plate) everything looked dandy …good compression .. started on a second pull with choke

    died after a 10 second run with a short RPM increase.

    no reason to do so yet it did several tries later I pull the carb and checked it out . perfect

    silly thing started to run while hand pumping it

    I loaded the carb with fuel got it going and pulled the fuel line to the carb….and no fuel was getting pumped out to replenish the carb 🙁

    put in a new square pump… same thing

    both pumps look fine except they leak air if I do a directional flow test OUT to IN and I could hardly get any of no air IN to OUT

    I had noticed this last winter when I checked my 5 new arrivals at $6.99 CDN each !!!

    conclusion… 99% certain I got a bad bunch of pumps and will be modifying with a nice round B&S pump with a pulse nipple on the cover plate instead . At least I know th B&S pump passes the directional blow test

    opened both up looks perfect….they have metallic check valves that seem to work yet they leak air … almost like the layer gaskets aren’T doing their job of sealing the various sections.

    i’ll try to fin d my purchase history and feedback to the seller. 🙁

    IMG_0105

    Joining AOMCI has priviledges 🙂

    • This topic was modified 1 month, 3 weeks ago by crosbyman.
    • This topic was modified 1 month, 3 weeks ago by Mumbles.
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    James Calamon

    US Member - 1 Year
    Replies: 9
    Topics: 6
    #243744

    Where did you purchase your bad pumps.


    billw

    US Member - 2 Years
    Replies: 1573
    Topics: 46
    #243746

    Sorry, joe…you no like pump long time?

    All that matters to them is that they are slowly, methodically, putting every factory in this country (and Canada) out of business. And we fall for it, every single time.

    Long live American manufacturing!

    2 users thanked author for this post.

    crosbyman

    Canada Member - 2 Years
    Replies: 2229
    Topics: 233
    #243751

    ordered the pumps from AMAZON feb 21 5x$6.99 One member suggested they leaked but would probably seal up when BOLTED solid which added 2 more bolts on the corners

    but I had no fuel pumped out.

    ok at $7 each not a big loss but I wrote the seller to express my opinion maybe he will come around and send 5 pumps from his good stock …

    In any event I’ll go B&S which passes the blow test 100% and mounts just as well

    all I need is the extra nipple /hose to the bypass cover..available on a 10hp done it before on a 7.5hp see picture…using the modified air pulse nipple behind the carb.

    7.5-Hp-Dec-2013-019

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    • This reply was modified 1 month, 3 weeks ago by crosbyman.
    • This reply was modified 1 month, 2 weeks ago by Mumbles.
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    seakaye12

    US Member - 2 Years
    Replies: 677
    Topics: 96
    #243777

    For one thing…..there are TWO versions of that style pump. (The black one in the post above this one)

    There is another version that uses screws to hold the thing together.

    I would definitely suggest that you use the screw version.

    I have a couple of the un-screw models…..and they pop apart within a few minutes of running.

    Interestingly …..the “Genuine” Briggs pumps sold for $40 at mower shops have the Briggs logo on them and are the Un-Screwed version. Not good!

    Chuck

    Fuel-Pump3

    • This reply was modified 1 month, 2 weeks ago by seakaye12.
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    outboardnut

    US Member - 2 Years
    Replies: 786
    Topics: 345
    #243786

    Can a person use a Briggs pump on a 1958 big twin 35 hp?


    crosbyman

    Canada Member - 2 Years
    Replies: 2229
    Topics: 233
    #243789

    thanks for heads up on the pumps I’ll look into it I noticed one of them actually said MIKUNI printed in the back … they may not be all junk but certainly look-a likes.

    the one I installed did not seem to break apart (no feed back on the owner of the sold motor)

    Joining AOMCI has priviledges 🙂


    Mumbles

    Canada Member - 2 Years
    Replies: 5121
    Topics: 274
    #243796

    So Crosby, was it just the one pump which was bad or did you try all of them? Reason I’m asking is because I’ve installed three of them now on 6 and 9.9 horse motors without any problems, yet.


    crosbyman

    Canada Member - 2 Years
    Replies: 2229
    Topics: 233
    #243797

    well initially they all failed the blow test which I identified to the seller back in March 21 at $6.99 I told seller I was keeping them assured that I could work out the leak bugs .

    I opened a few and found noting wrong in the check valves and bolted everything up till I tried to run my 10hp d

    I tried a second brand new pump and same problem ( blow test failed and no fuel) . I inspected my conversion job on the bypass cover and all OK I had even sealed the aluminum mounting plate on the polished bypass cover.

    seller wrote back thanking me for my feedback which they would send to the manufacturer….:-( no offer of replacement or refund . I wrote back asking….for such

    I did not mount all 5 pumps expecting no change in performance

    see intial message to seller back in March ..
    .
    first.. I am keeping my purchased items. 🙂
    just curious…. Normally fuel pump pass fuel from IN to OUT to test these pump good test is to blow air IN to OUT then recheck if the pump can…. or allows air to flow in the reverse direction OUT to IN your pumps pass air OUT to IN but they should not allow this. any reason why ??
    I can fix this anyway 🙂

    Joining AOMCI has priviledges 🙂

    • This reply was modified 1 month, 2 weeks ago by crosbyman.

    fleetwin

    US Member - 2 Years
    Replies: 4030
    Topics: 41
    #243799

    Sorry, joe…you no like pump long time?

    All that matters to them is that they are slowly, methodically, putting every factory in this country (and Canada) out of business. And we fall for it, every single time.

    I’m with you Bill….That price is just too good to be true…. I suppose the original fault is with OMC/BRP for charging so much for these things which just invited the chinese invasion


    bruceter

    Canada Member - 2 Years
    Replies: 21
    Topics: 4
    #243827

    I have bought these pumps on Amazon and yes they do not work , prime the carb and motor runs for a minute then quits if I keep squeezing the primer the motor will keep running


    crosbyman

    Canada Member - 2 Years
    Replies: 2229
    Topics: 233
    #243840

    well here is what I will try just for the sake of it. since they leak air from multiple sources I will inject water in the OUT nipple and try to visualize where how why they pass air backwards. Obviously a sealing issue

    maybe I can fix them time permitting.

    Could be just those metallic check valves not being seated deep enough . All other component & gaskets are squeezed and sealed by the 4 bolts when mounted. check valves must be the weak point

    latest mail from the reseller today confirmed the manufacturer will not respect his warranty (past due) even as I explained that testing water pumps on frozen lakes in Canada was a problem … in March

    one more reputation down the drain for 35$ worth ….. of bad pumps

    Joining AOMCI has priviledges 🙂

    • This reply was modified 1 month, 2 weeks ago by crosbyman.

    Mumbles

    Canada Member - 2 Years
    Replies: 5121
    Topics: 274
    #243843

    I still have a few of these pumps on the shelf so I think I’ll dissect one soon to try and figure out what the issue is with them. It could be something simple.


    crosbyman

    Canada Member - 2 Years
    Replies: 2229
    Topics: 233
    #243844

    how is the blow test on yours ..? physically I found nothing wrong but air flows see PM out seemingly from everywhere incl. the mounting holes.

    actual air flow IN to OUT is next to impossible using my mouth …could be just check valves again. all my stuff is at the cottage…not accessible for now

    there are lots of sellers ..did u get the $6.99 version

    check PM

    Joining AOMCI has priviledges 🙂

    • This reply was modified 1 month, 2 weeks ago by crosbyman.
    • This reply was modified 1 month, 2 weeks ago by crosbyman.

    David Bartlett

    US Member - 2 Years
    Replies: 517
    Topics: 22
    #243861

    Sorry, joe…you no like pump long time?

    All that matters to them is that they are slowly, methodically, putting every factory in this country (and Canada) out of business. And we fall for it, every single time.

    Bill,

    That is funny! Those Chinesium pumps are JUNK!

    David Bartlett
    Pine Tree Boating Club Chapter

    "I don't fully understand everything I know!"

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