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2010 700 Grizzly hard to start runs for only a second.

kickstartbuddy

By kickstartbuddy
in Yamaha ATV Forum

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kickstartbuddy Newbie

kickstartbuddy

Posted
Posted

I was thinking its bad gas but it wont run for longer period even using starting fluid, so I'm thinking fuel starved. Injector? I heard the fuel filter is built into the fuel pump, which sounds like a terrible idea. I have read a few reviews saying its a common symptom of a plugged injector. I have my air intake box off and beneath it is the injector I think. But what do I need to remove to get to it? I dont want to just start pulling stuff off the top of the motor. 

Couldnt locate a you tube vid that actually shows an injector removal.

Any help out there. 

  • 1 month later...
russj_20 Apprentice

russj_20

Posted
Posted

You should first verify compression. Valve lash is common for a hard to start situation especially a tight intake valve.  It also may be dropping spark? Could have an airboot leaking and leaning it out to the point that it doesnt want to run. If you can, test fuel pressure. The injector is probably the last component I would check after verifying these first. In a shop, the typical tests would go about in the order of: 

1. compression/leakdown 2. spark 3. fuel pressure. One of these would usually point to the system to dig into further

 

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