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By kram2112
ran like a beast. sat for a couple of years. New cheap petcock, tank wash and cheap carb. bogs half throttle. 300.00 factory carb and the same. moved the needle no help. all new vent lines and battery. wouldn't think yhe timing should change.
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By DonB
Fuel Injected, 2015 AC XR550XT ATV (renamed the Alterra from 2016 on). 1300 miles.
I had written an earlier post concerning part of the problem, but a new one has arisen...
2 PROBLEMS:
Engine sputters & fails when throttle applied (even from idle and while in Neutral), and, now... Fuel pressure reads @ "0" despite clear line and operational fuel pump. Unit originally suffered fire in muffler - presumably due to engine driveability problem & resulting unburnt fuel... fuel pump ultimately died when starting repairs. Installed a new fuel pump as dealer advised it was the problem. Have now been chasing a proper fix for several months, as, while it generally starts fine, the engine will not take any sort of throttle - even from idle. Instead, it immediately starts to miss, backfire & die. From the beginning, the dealer claimed that a new genuine AC fuel pump was all that was needed. However, the replacement, non-AC fuel pump runs at 42 psi & works fine). NEW ISSUE: Unexpectedly, the first replacement pump stopped registering any fuel pressure (per in-line pressure gauge). This despite confirming both: (a) pump clearly pumping & (b) fuel line - all the way to the fuel injector - clear & delivering fuel. Tried a 2nd replacement pump which, initially, registered pressure (engine performance issues remained). But, when I tried to start it today, no fuel pressure again (and, therefore, apparently no fuel to injector). Again confirmed pump working and fuel line to injector clear & delivering fuel. Engine continues to start easily with starter fluid but, of course, stalls once fluid has burned off. While cleaning/replacing the fuel injector seems the next logical step, it strikes me that, were the injector plugged, I should still be seeing a psi reading on the installed, in-line gauge I've been using (not zero)!
Any ideas before I surrender this to the dealer and a B-I-G bill?
thanx, db
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By Ben1206
I have a Timberwolf that ran great for along time, it started to have starting problems I cleaned the carburetor and changed the spark plug. It starts but bogs down in third gear and going up hill. I put a new carb in same issue. I’ve messed with the fuel air mixture same issue. I’m at a loss any help would be much appreciated.
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By ttu
So just acquired this 2002 Suzuki Vinson LT-A500F and am in the beginning process of getting it to run. I found two small screw size holes in the top of the tank, it would appear someone was not careful screwing something down to the plastic cover and accidently damaged the tank. My preface is to replace the tank but I am not finding any available, so can anyone give me any advise on this. If I do not find a suitable one at a reasonable price I will look at possible doing a epoxy type repair on this one.
Next is the fuel gauge, its missing and is creating another hole in the tank. I found this ONE which looks like it on ebay but the seller does not include any dimensions to verify. So any advise on this will be greatly appreciated as well.
I did see the post on changing the fuel petcock with the Yamaha on/off valve which I have ordered already.
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By DPDISXR4Ti
I hadn't driven my Kodiak for a two months, and since it was low on fuel, the first thing I did was filled it up to maybe 7/8 full. Getting ready to start it, I rotated the fuel selector switch to "on" and within seconds I smelled and saw fuel dripping onto the floor. I quickly turned it off and the fuel gradually stopped - I can repeat this.
The fuel is flowing from the hose that is connected to the bottom of the carb, and routes around to the left side toward the wheel well. Any idea what's going on here? It ran fine the last time I had it out.
Thanks...
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