700 wont start / stay running - Yamaha Rhino Forum - Rhino Forums.net
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post #1 of 7 (permalink) Old 09-07-2012, 05:57 PM Thread Starter
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700 wont start / stay running

Took my 08 700 out this past weekend and it ran great. Decided to take it out for a quick ride around the neighborhood today. Got to the end of the street and it sputtered then died. I was able to get it to start and was fine for awhile. Took it out about an hour later and it died again then I parked it on the side of the house. When I went to put in the garage it would not start. Just turned over but would not start. every once in a while it would fire up for a split second then die. It acts as if it is out of gas. Checked the gas and it was well over half but I added some to be safe. It finally started but was idling really high and then died. It finally started and I ran it around the block a few times. everything was great. parked it in the garage and left it for about 10 minutes. Went back out to start it and right back to the same starting problems. Turns over over and every once in a while it will fire as if it is going to start but goes back to turning over and over.

Any body out there have any ideas before I put it on the trailer and take it to the dealer. Luckly, I bought a 2 year extended warranty when I bought it 5 months ago.
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post #2 of 7 (permalink) Old 09-07-2012, 06:27 PM
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Here is how warranty works-- the failure has to be a factory part.

You could possibly have bad gas (mixed wth water) in your Rhino that is causing all your problems. I would drain the carb, drain the gas tank and start over again with fresh gas. If that doesn't cure your problem, take it to the dealer and tell them what you already have done to fix it.

If you do all this there is a lower chance that they are going to charge you despite the warrranty.

--Geoff
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post #3 of 7 (permalink) Old 09-08-2012, 05:20 AM
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It is most likly your iac valve, I have repaired quite a few with that problem.yamaha dosent sell the valve by itself you have to buy the whole throttle body, not easy to swollow that one. But the Suzuki 750 king quad uses the same thottle body and you can buy the iac valve from them.

05 Stroked 720cc. 09 700 ... Sheave,OD Sliders.http://youtu.be/4vM2BLqDKVshttps://youtu.be/hVR0R-wSxKY
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post #4 of 7 (permalink) Old 09-09-2012, 05:09 PM Thread Starter
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Well, I changed out the spark plug and it ran great again. The old plug did not look bad. I pulled the old plug and grounded it on the engine case to check for spark. It seemed to have a weak spark. Anyway, like I stated with a new plug it runs great.

I did pull the ics valve off the side of the throttle body and cleaned it along with the area it sits in. This was before I changed the plug and it did not fix the problem.
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post #5 of 7 (permalink) Old 09-09-2012, 05:20 PM
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Nothing better than changing the spark plug and runs like new agian. Glad to here.

stuntmans phone. tapatalk

05 Stroked 720cc. 09 700 ... Sheave,OD Sliders.http://youtu.be/4vM2BLqDKVshttps://youtu.be/hVR0R-wSxKY
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post #6 of 7 (permalink) Old 09-15-2012, 05:16 PM Thread Starter
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Well, everything was working great until today.

The problem came back today. I tried to change the spark plug like last time but it did not fix the problem. I unpluged the MSD box and put it back to factory but still no luck. I then pulled the hose off the throttle body and sprayed some starting fluid and it would fire up for a split second then die. Pulled the fuel line off the fuel rail and hit the key. Fuel pumps ( primes ) and when you hit the key fuel would flow. Any ideas?

Finally it got pushed onto the trailer and back to the dealer.
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post #7 of 7 (permalink) Old 09-15-2012, 05:31 PM
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On top of the throttle cable housing is a 10mm nut with small flat head screw, loosen nut and turn in screw until it fires off and adjust your idle. Your IAC valve is inop.

Rhino Trail Phone. tapatalk

05 Stroked 720cc. 09 700 ... Sheave,OD Sliders.http://youtu.be/4vM2BLqDKVshttps://youtu.be/hVR0R-wSxKY
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