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Discussion Starter · #1 ·
Hello my SV has been having a problem for a while now. When I accelerate and get into 8k+ its starts to lack power and starts sputtering. Ive just put a new exhaust on and problems did start around then. Not sure if its related because from all my reading a slip on for an SV needs no re-tuning. I put in a new fuel pump and sock filter, new plugs, checked airbox, did clutch mantra, adjusted my throttle. I admittedly have a small leak out my radiator but the engine stays cool 100% of my riding while this issue has been going on. The bike is ridable but it backfires and sputters. Anyone have an idea on what i should do?
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I love to keep pointing to dirty fuel filters, as that sounds just like my experience with a super dirty high pressure filter. The "sock" is not so much a filter as a screen, in my mind. Expensive to replace filter, so try exhausting simpler, cheaper things for now.
 

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Hello my SV has been having a problem for a while now. When I accelerate and get into 8k+ its starts to lack power and starts sputtering. Ive just put a new exhaust on and problems did start around then. Not sure if its related because from all my reading a slip on for an SV needs no re-tuning. I put in a new fuel pump and sock filter, new plugs, checked airbox, did clutch mantra, adjusted my throttle. I admittedly have a small leak out my radiator but the engine stays cool 100% of my riding while this issue has been going on. The bike is ridable but it backfires and sputters. Anyone have an idea on what i should do?
I keep coming back to fuel pumps...

Is it an aftermarket or OEM pump? From what I've seen on numerous forums, aftermarket pumps are problematic. They produce adequate flow, but inadequate pressure.

How long has the pump been in?
 

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Discussion Starter · #5 ·
I love to keep pointing to dirty fuel filters, as that sounds just like my experience with a super dirty high pressure filter. The "sock" is not so much a filter as a screen, in my mind. Expensive to replace filter, so try exhausting simpler, cheaper things for now.
Alright, whats exhausting simpler? And yes im just hesitant to buy the filter, so expensive馃
 

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Discussion Starter · #6 ·
I keep coming back to fuel pumps...

Is it an aftermarket or OEM pump? From what I've seen on numerous forums, aftermarket pumps are problematic. They produce adequate flow, but inadequate pressure.

How long has the pump been in?
Aftermarket pump, my old pump seemed fine, but i was uneducated on the assembly and threw in one. Its been about 2-3 weeks with the new pump. Im thinking about putting the stock one back in...
 

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In stock mapped form, my '09 was really lean with a slip on and K&N air filter. Main problem showing in the mid range, but noticeably lean all across the board (including top end).
I'd say if you have any fuel flow/pressure issues, the already lean A/F will get to the point where the bike will be so lean on top that it won't run. As others have stated, look in the fuel pump area..
 

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Discussion Starter · #11 ·
Been debating on doing the external fuel filter mod, do you guys have any experience with it? Ive never done any fuel line type things so im hesitant. Also the high pressure filter is 280$? Any way i could find one cheaper or is that my only option. Ebay has them all with the whole pump assembly.
 

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Been debating on doing the external fuel filter mod, do you guys have any experience with it? Ive never done any fuel line type things so im hesitant. Also the high pressure filter is 280$? Any way i could find one cheaper or is that my only option. Ebay has them all with the whole pump assembly.
I've done it. It's relatively easy to do. Use the 8mm fuel injection rated hose and fuel injection rated hose clamps.
 

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Discussion Starter · #13 ·
Ive put in a new complete pump and I've been riding for a few weeks now. Its back from the dead! it pullsss!!
I do have a rather boggy sounding start and I feel like its a need now to warm the bike up after a cold start, which I should be doing anyway, probably will change the plugs again. My SV is back though!! Ima post a picture soon of it after I get it sorted!
 

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Look up the VStrom external fuel filter modification. It can be done to our sv650鈥榮 also.
Fix first. Mod later.
 

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Now that your bike is fixed I can ask what I really want to know: what adhesive did you use on your StompGrips?? That thing looks perfect. I've tried 3M, Gorilla, the original SG stuff that never worked for me. It's held on with Super77 now but it doesn't look anywhere near as clear as yours. I'm jealous.
 

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That mod is an inexpensive fix To his issue!
Funny that you say that. A few years ago I installed a $2 see-through fuel filter between the tank and the fuel pump on my Gen1 and forgot about it. Yesterday I was doing some maintenance and inspected it. It was full of dirt and crap that otherwise would have gone straight into the carbs. Yikes!
 
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Funny that you say that. A few years ago I installed a $2 see-through fuel filter between the tank and the fuel pump on my Gen1 and forgot about it. Yesterday I was doing some maintenance and inspected it. It was full of dirt and crap that otherwise would have gone straight into the carbs. Yikes!
Hmm, which brings us back to "fix first, mod later"
A second filter is just that: a second filter. If you need it to clean dirty fuel that's fine, but the issue is the dirty fuel. A second filter is a band-aid, not a fix.
 

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Hmm, which brings us back to "fix first, mod later"
A second filter is just that: a second filter. If you need it to clean dirty fuel that's fine, but the issue is the dirty fuel. A second filter is a band-aid, not a fix.
Correct. I forgot to point out that I installed that little external fuel filter on my bike because the internal one (more a flimsy screen than an actual filter) had pretty much dissolved.
 

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Take it a step further by filtering the fuel before it enters the tank. It doesn鈥檛 seem practical, but it鈥檚 reasonable once you find the path. Ideas include: fill up a jug you keep at home and use a screened funnel or some other device; keep a filter with your bike so you can use it when at the pump. I like these better than adding failure points and complexity to the little bit of room available under the tank.
 
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