2008 V strom 650 running on front cylinder only - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 47 Old 12-16-2018, 06:41 PM Thread Starter
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2008 V strom 650 running on front cylinder only

I bought my 2nd v strom 650 , 2008 model with 33,000 miles showing that is running only on the front cylinder. (The price reflected the condition previous owner bought a new sports bike GSXR 650 and moved on while I have a habit of buying bikes that need a little love This makes # 38 in the 5 years)

I just got it yesterday so Ive not gotten too far. Here is what I found so far. 175 psi on both cylinders.

1. Have spark on both cylinders and swapped the coils just to be sure. The front continued to run with the coil swap and the rear is not.

2. The rear plugs where black and looked gas covered so I swapped plugs front to back and the front continued to fire while the back is not.

3. Now Im thinking perhaps the fuel injector for the rear cylinder might be stuck open somehow flowing way to much gas to fire.

Anyone here run across this in the past and fixed it. (Ill sort it out but thought Id see if anyone on this forum has already been through this one?)
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post #2 of 47 Old 12-16-2018, 09:39 PM
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Your theory sounds plausible to me.

Did the previous owner give you any background? I assume this happened as a result of sitting. Or was it a sudden onset perhaps due to the owner attempting to do something beyond his skill set, like checking valve clearance, or something like that?

DL1000K6 Two wheels good; four wheels bad.
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post #3 of 47 Old 12-16-2018, 11:50 PM
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It sounds like gunk in the fuel system as a result of lack of use. It may be possible to remove and soak the injector, or you may need a new one part# 15710-27G00 https://www.suzukipartshouse.com/oem...e-body-fitting

Check that fuel flows to the injector while the injector is disconnected. To prove the injector is jammed open you could swap injectors.

2010 Weestrom; 2017 Kawasaki Versys-X300; 1988 Suzuki GSXR1100
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post #4 of 47 Old 12-17-2018, 12:50 AM Thread Starter
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Yes, I think the injector swap is my next move. I'll post the results when I have them.
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post #5 of 47 Old 12-17-2018, 12:59 AM
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They are identical. Swapping them should be no problem.

2010 Weestrom; 2017 Kawasaki Versys-X300; 1988 Suzuki GSXR1100
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post #6 of 47 Old 12-17-2018, 03:29 AM
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Perhaps also check the valve gap plus valve timing marks. Cam gear one tooth out, could cause a similar symptom.
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post #7 of 47 Old 12-17-2018, 10:18 AM Thread Starter
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I'll try the injector swap first - then no matter how that turns out I will follow up with a valve check. I've bought the shim kit and as good luck would have it the same kit also fits my Honda St1100's.

However, it looks like it may be after the holidays before I get back to the V Strom issues. But I will update this thread as things progress.
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post #8 of 47 Old 12-17-2018, 10:24 AM Thread Starter
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Any thoughts on best place to buy a V Strom factory repair book?

I'm in the market for one.
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post #9 of 47 Old 12-17-2018, 10:18 PM
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At this time we can only recommend https://www.genuinesuzukimanuals.com/ for a genuine service manual.
Clymer also produce their version. We presently have a site policy of deleting any comment on any pirated copies.

2010 Weestrom; 2017 Kawasaki Versys-X300; 1988 Suzuki GSXR1100
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post #10 of 47 Old 12-18-2018, 12:23 AM Thread Starter
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Yes, I agree OEM on the manual is the way to go. Thanks for the link.
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