Fuel Pump removal??? - Polaris Riders
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post #1 of 5 (permalink) Old 07-18-2006, 05:00 PM Thread Starter
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Fuel Pump removal???

I know there was an older thread on this topic..but only a few responses....so here goes..

Has anyone has negative results from removing their fuel pump??

I am running an edelbrock and run out of top end (can't even seem to hit the rev limiter flat out on pavement??)...could this be the issue or just that the Edy is a little small??? (jetting is correct)

2004 Aniversary Edition, '06 Outlaw motor w/ HS 600 12.5:1, NC P&P, 3+2 angle valve job, NC mid-cams, big bore edelbrock w/ twist, cfm aluminum airbox w/ dual k&n filters, overev CDI, Rath stainless header, Nicholas Drag Pipe powdercoated matte black, NC MX clutch, PWR radiator, 450R MC conversion, Fox Floats front, Elka rear, 14,15 or 16/37 gears, 22in mud tires, Busa Battery, HPD stem with Renthal bars, Vapor, Rath alum. heels, PRM front bumper, Full Alum. skids, Cooler rack
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post #2 of 5 (permalink) Old 07-18-2006, 05:27 PM
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Hum is your twist throttle adjusted right??? when I had first put the fcr on bike i had used a twist throttle im not sure how the edelbrock is made but the fcr has a bunch of places to hook the cable if you dont set it right it wont open the carb all the way. I have my pump off and i find it runns a lot better with out it.

03 Pred fmf factory 4,big gun rev box, 12.5 to 1 weisco piston, web cams, some portwork,41mm FCR,no air box,13/40 sprockets. (SOLD )

04 yfz450, +3 hotrods stroker, 480 athena Kit, drag ported, Anadized factory 4, rev box, no airbox, 13/40 sprockes, Hot cams, +4 swing arm, running on methonal(use to be wifes bike )

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post #3 of 5 (permalink) Old 07-18-2006, 05:59 PM
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I know a few people took off their pumps with the fcr carb and said that they actually got a performance increase. Some also said that you might have to richen up your main, and be carefull that the fuel level doesnt get too low.

Has anybody tried this on the stock carb?

04 TLD Preddy: Twin Air Clamp On, Big Gun Full Exhaust(horrible), Shaved Fenders, 5hp sticker removal, Maxxis RAZRs (the real ones), Pro Taper Contours, Trailtech Bar Clamps, Pro Armor Nerfs w/ heelguards

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post #4 of 5 (permalink) Old 07-18-2006, 07:01 PM
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Here's my 2cents...why take the pump off? Is it a weight savings deal? Are you looking to gain the vacuum lost to operate the pump? When I removed mine I had issues any time my tank got lower than half way...I took it off for weight and just to clean things up, but I have to run about 8lbs more gas in my fuel tank to keep the thing from running crappy. Maybe I'm nuts but that doesn't sound like a good weight savings plan so I put it back on and she's run fine since. I'm sure I could have messed with it to make it work, but to heck with it...its a runner
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post #5 of 5 (permalink) Old 04-18-2017, 07:54 PM
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For me it has nothing to do with weight my Predator bogs down three-quarters of the way through every single gear and the immediate fix was the fuel pump we put a new one on it ran great for a few hard rides and today the bogging came back. bogs and Pops throughout every gear but I'm able to get through it, when I pin the throttle . will taking off the fuel pump fix this problem if I'm just by passing it completely. Shes got all new everything basically including carb . Local shops wont touch it complaining they ( predators ) have too many problems.
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