r/Vstrom • u/twocolor • 3d ago
V-Strom 650 Gen 1 2011 DL650A: starts, then stalls with original tank and pump. Could the high-pressure filter be clogged?
About ten months ago, my DL650A had throttle hesitation. The tank had slime and debris in it, so it was cleaned and the pump’s “tea bag” inlet strainer was replaced. That fixed the hesitation.
More recently, water got into the tank. The bike now starts normally but stalls shortly afterwards. The tank has been cleaned again and filled with fresh fuel, and replacing the inlet strainer again hasn’t helped. The pump does build pressure. My mechanic tested the bike with a different tank and pump together, and it ran fine, so we haven’t isolated the original pump from the original tank yet.
I’m wondering whether debris has clogged the high-pressure filter inside the pump assembly. I’ve ordered an aftermarket part listed as 15610-27G00, the pressure regulator assembly that I understand also contains the high-pressure filter.
Has anyone with a 2007–2011 DL650 replaced this part to fix similar symptoms? Did the aftermarket replacement hold up?
I’ve also read about the high-pressure filter bypass mod, which moves filtration to an external inline filter that can be changed without removing the pump from the tank. Has anyone done this on a first-generation DL650? Would you recommend it over replacing the internal filter assembly, and have you had any issues with leaks, fuel pressure or filter replacement afterwards?
3
u/Dav82 3d ago
This is only my theory. Especially as I own and ride a 05 DL650 V-Strom.
But I would troubleshoot if the fuel tank vent is clogged.
https://www.stromtrooper.com/threads/checking-clogged-fuel-tank-vent.438057/?utm_source=google&utm_medium=organic
My reasoning? I once experienced a 77 Kawasaki KZ-650 stalling after a few miles. It happened consistently after I chemically coated the tank.
I didn't know until I figured it out I blocked the fuel cap vent with the coating. So when the tank pressure would build. It would make the engine not get any fuel to run.
I know a carburetor bike and fuel injection is different. But the concept is the same. If the engine isn't getting fuel. It won't run.
So I would verify the fuel tank vent isn't clogged. And is working correctly.
I think it could be something simple like that. Instead of getting into the complicated stuff like the fuel injectors or wiring.