grinding noise when trying to start? - Yamaha Grizzly ATV Forum
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post #1 of 17 Old 10-04-2010, 05:29 PM Thread Starter
 
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grinding noise when trying to start?

My griz has been sitting for a while, and we decided to start riding a few days ago. Well, it cranked up, but wouldnt run at all, and would shut off if I disengaged the choke.

Now a few days later, I went to try and star her up, and I get a weird sound, almost like grinding, or buzzing.. hard to describe. It won't turn over at all.
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post #2 of 17 Old 10-04-2010, 05:56 PM
 
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Battery?
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post #3 of 17 Old 10-04-2010, 08:04 PM Thread Starter
 
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hmm, the headlights stay on if I turn them on, so i didn't suspect it would be the battery.
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post #4 of 17 Old 10-05-2010, 06:53 AM
 
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Check the terminals on the starter for corrosion. Same for the battery.
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post #5 of 17 Old 10-05-2010, 07:09 AM
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I don`t know what the problem is but my griz(700) makes a noise when I start it kind of sounds like a dry bearing after it starts the noise will come and go. I suspect the one way starter clutch bearing.

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post #6 of 17 Old 10-05-2010, 10:21 AM Thread Starter
 
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Quote:
Originally Posted by shawnboy View Post
Check the terminals on the starter for corrosion. Same for the battery.
Let me take a few pics and post a video.

Here ya go:

Last edited by F34R; 10-05-2010 at 10:32 AM.
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post #7 of 17 Old 10-06-2010, 06:34 AM Thread Starter
 
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anyone have any other suggestions?
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post #8 of 17 Old 10-06-2010, 07:01 AM
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starter relay maybe??? have you tried bypassing the relay and going straight to the starter?

Signature edited by GEARSLAYER in respect for the great late Mike Mayho known to us as Mad Mike. Mike's no longer with us people.

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post #9 of 17 Old 10-06-2010, 07:38 AM
 
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That does sound mechanical doesn't it?

Wiped out drive gear on the starter? Ring gear on the flywheel?

I am more knowledgeable with autos and just getting into atv mechanics so you'll have to excuse my terminollogy.
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post #10 of 17 Old 10-06-2010, 01:44 PM Thread Starter
 
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Thanks for the replies. How do I bypass the relay and go straight to the starter? lol

You'll have to excuse my ignorance. I literally don't have much mechanical knowledge.
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post #11 of 17 Old 10-06-2010, 02:10 PM
 
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Using jumper cables hook them up to the battery. Then ground the negative to the frame anywhere. You'll see a cable attached to a bolt on the starter, touch the positive there and starter will turn if it's good.

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post #12 of 17 Old 10-10-2010, 07:33 PM Thread Starter
 
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thanks for the info again.

Here's an update.


It has fuel, fuel is on...
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post #13 of 17 Old 10-13-2010, 06:42 AM Thread Starter
 
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any suggestions on where I should go from here?
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post #14 of 17 Old 10-13-2010, 06:57 AM
 
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Well, since it's burned more than one of us....is the kill switch ON? :-)

After checking that, I'd pull the spark plug and have a look at it. If the tip is wet and oily than it's possibly just flooded. Take a lighter and dry the plug.

Try it again.

When the plug is out you can check and make sure it's firing (If you want)
- Fit the plug into the end of the plug wire. Hold the ground area of the plug (the threads, or the hex area where the socket fits on) against one of the engine cooling fins (or something that you know is grounded).
Crank the engine for a second or two, watching for spark jumping between the center electrode and the ground tab.
If you've never done this before, use pliers with insulated handles to hold the plug boot. If you're a better path to ground than whatever you have it grounded against, it WILL go through you to get to ground. Won't hurt you, but you'll feel it for sure.

After you try starting it again, check the plug again.
It it's dry, you're not getting fuel. If it's wet, there's likely no spark.
(Rule of thumb....)

From your first statement about it not running unless it's choked, and since you said it sat quite a bit, I'm going to guess your carb is gummed up and it's running really lean. (what year? does it have a carb? I dunno..)

After you verify spark, you'll have a direction to go anyway.

((Edit)) Good idea to check for gas in the oil if it was flooded. Oil's cheap...if it's got gas in it, it should be changed.
If the plug is fouled and not firing, or just simply not firing, when you try to start it, fuel is being pulled into the combustion chamber. If it's not burned, most of it goes down the cylinder walls, past the rings and into the engine oil.

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Last edited by gcfishguy; 10-13-2010 at 07:02 AM.
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post #15 of 17 Old 10-13-2010, 08:19 AM
 
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Can't say why it won't start but the sound of it sounds totally normal to me
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