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Wont start, bad fuel pump?

This is a discussion on Wont start, bad fuel pump? within the Engine forums, part of the Technical category; My 06 Rhino 660 was sitting in a garage for a 2-3 months, and the carb wasnt drained before that. When I tried starting it, ...


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Old 06-30-2013, 04:31 PM
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Wont start, bad fuel pump?

My 06 Rhino 660 was sitting in a garage for a 2-3 months, and the carb wasnt drained before that. When I tried starting it, it just wouldnt fire and I couldnt smell gas or anything from the exhaust. It has a Hunterworks CDI that makes it hard to start when cold, but it still would have started by now.
The first thing I did was put new gas in it and drained the carb, but there was no gas that came from the floatbowl drain. Could this mean the fuel pump isnt sending any gas to the carb when it's turning over?
I know it's likely the pilot jet is clogged, but I've had Rhinos start after a couple months of sitting quite a few times.
So what should I do first? Fuel pump or carb clean?
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Old 06-30-2013, 06:21 PM
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Take off the lower hose that goes to the rollover valve ( black round deal mounted to the fuel pump bracket with hose going in the bottom and top) & blow into that hose to build up some pressure in the tank ( fuel cap on )
plug the hose with thumb to hold the pressure in the tank and crank it over.

Give that a try to see if it starts
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Old 06-30-2013, 07:36 PM
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I would it could be the fuel pump, or maybe the fuel filter? You could try to series the fuel pump to check the state of the motor.
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Old 07-01-2013, 11:15 AM
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Put some gas in the carb and see if it starts, if so then it's the fuel pump. My guess is the fuel pump anyway, I had the same issue with my '06 when I let it sit for a year. I put in a new high flow fuel pump and also a primer bulb for the carb and it's been perfect. I recommend everyone put a primer bulb in line. It cost me like $12 and it works in seconds. No more dry starting trying to crank after it sat for awhile, just squeeze that little primer bulb behind the passenger seat and you're ready to crank her up.
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Old 07-01-2013, 07:16 PM
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Quote: Originally Posted by NorthCountyRhino View Post
My 06 Rhino 660 was sitting in a garage for a 2-3 months, and the carb wasnt drained before that. When I tried starting it, it just wouldnt fire and I couldnt smell gas or anything from the exhaust. It has a Hunterworks CDI that makes it hard to start when cold, but it still would have started by now.
The first thing I did was put new gas in it and drained the carb, but there was no gas that came from the floatbowl drain. Could this mean the fuel pump isnt sending any gas to the carb when it's turning over?
I know it's likely the pilot jet is clogged, but I've had Rhinos start after a couple months of sitting quite a few times.
So what should I do first? Fuel pump or carb clean?
Your pump might be fine, but you gotta fire it off to get it to pump.

I have taken the boot off front and used carb cleaner to spray in carb to start it, keep spraying to keep it running and with it running the pump will start pumping quickly.

The CDI can't fire gas that is not there, so it can't help that starting issue.

Todd
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Old 07-02-2013, 02:46 PM
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these things are a pain to start if they have been sitting for several months. did you get it started with the suggestions? get a marine grade primer bulb and install it in between the tank and the fuel filter, works like a charm. ive added the primer bulb, run a new fuel filter, and added a mikuni high flow fuel pump when the stocker died, easy starts now!!!!!
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Old 07-02-2013, 10:18 PM
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Thanks, I put gas in the carb and it started immediately
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Old 07-04-2013, 09:32 AM
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I have a 2004 Rhino 660 I bought new, from day one it was a little hard to start. As time went on it slowly became harder to start after sitting for a while. I though it was because of and not being used. I came to the conclusion the fuel pump was defective from the factory. Right now my Rhino has only 540 miles on it and not really been abused. I put a fuel pump on it from a 18hp Briggs and Stratton that was on my lawn mower. It has a plastic housing and fits like it was made for it, time will tell if it is beefy enough to last. For $30 it is cheap enough to have a spare in case of a failure on a long remote rides. It sucks to get towed.

Last edited by teefbee; 07-04-2013 at 04:39 PM.
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Old 07-04-2013, 09:50 AM
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Quote: Originally Posted by teefbee View Post
I have a 2002 Rhino 660 I bought new, from day one it was a little hard to start. As time went on it slowly became harder to start after sitting for a while. I though it was because of and not being used. I came to the conclusion the fuel pump was defective from the factory. Right now my Rhino has only 540 miles on it and not really been abused. I put a fuel pump on it from a 18hp Briggs and Stratton that was on my lawn mower. It has a plastic housing and fits like it was made for it, time will tell if it is beefy enough to last. For $30 it is cheap enough to have a spare in case of a failure on a long remote rides. It sucks to get towed.
They didn't start making rhino's until 2004.
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Old 07-04-2013, 09:57 AM
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Quote: Originally Posted by teefbee View Post
I have a 2002 Rhino 660 I bought new, from day one it was a little hard to start. As time went on it slowly became harder to start after sitting for a while. I though it was because of and not being used. I came to the conclusion the fuel pump was defective from the factory. Right now my Rhino has only 540 miles on it and not really been abused. I put a fuel pump on it from a 18hp Briggs and Stratton that was on my lawn mower. It has a plastic housing and fits like it was made for it, time will tell if it is beefy enough to last. For $30 it is cheap enough to have a spare in case of a failure on a long remote rides. It sucks to get towed.
probably not defective from the factory, if it doesnt get used, the diaphram dries up and the pump will go bad. you can pick up the mikuni high flow fuel pump for around $50, probably better then the one for the mower.
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Old 07-04-2013, 04:37 PM
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My mistake I also have a 2002 Raptor, my Rhino is a 2004.
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