2007 rancher wont start - Honda ATV Forum
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post #1 of 18 (permalink) Old 03-24-2019, 01:51 PM Thread Starter
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2007 rancher wont start

Working on a friends 07 420 rancher. It has set for along time. We have cleaned the tank replaced fuel pump fuel injector and fuel filter. Im getting fire with the a new plug and getting a good spray out of the injector. It will hit it just wont keep running if it does start. When i replaced the fuel pump we cleaned the canister and filled it half way with gas so it wouldnt have to work so hard on pumping full of fuel. I have never worked on a fuel injected bike before. So any suggestions or help is appreciated! Im learning about these things!
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post #2 of 18 (permalink) Old 03-24-2019, 01:59 PM
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is the fuel pump running all the time ?, if my memory is any good ? ( thats says a lot !..lol ) these models have a fuel pump relay to kick the pump on and off. plenty of fuel in the tank ?, petcock set to right position ?, fuel lines from pump to injector hooked up right ?. there is also a sensor in the air box I think ?, it works with the throttle body if I remember right ?.

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post #3 of 18 (permalink) Old 03-24-2019, 02:43 PM Thread Starter
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Plenty of gas,new pitcock i have tried it on reserve and on nothing changes. I turn the key on it hums then turns off as usual.its getting fuel to the injector. Had it out but pluged up and it shot a good fan of gas. Didnt notice a sensor in the sir box but ill look.
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post #4 of 18 (permalink) Old 03-24-2019, 02:59 PM Thread Starter
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Does have a sensor in the air box. Im waiting on a air flter. But i did notice it would try and start better with the box closed up! Would not having the filter on it affect it running? I think its a fuel issue because it will on starting fluid whic i hat using!
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post #5 of 18 (permalink) Old 03-24-2019, 04:12 PM
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The sensor in the airbox must be plugged in or it won't start. Try replacing the spark plug with a new NGK as well. If you put a Champion plug in it it will fail right away, they're junk.


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post #6 of 18 (permalink) Old 03-24-2019, 05:01 PM Thread Starter
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Sensor is plugged in. It has a ngk plug which is brand new.

Last edited by Benji1213; 03-24-2019 at 05:24 PM.
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post #7 of 18 (permalink) Old 03-24-2019, 05:35 PM
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put the air filter back in, close lid, see how it does ?.

'89 trx350D foreman 4x4...'85 vf700c magna, '03 trx450fm foreman 4x4 , 2015 Yamaha waverunner fx cruiser ho, '08 vt750c2 shadow spirit
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post #8 of 18 (permalink) Old 03-24-2019, 06:38 PM Thread Starter
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He is supposed to bring me the air filter. All I have is screen part. The element was rotten.
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post #9 of 18 (permalink) Old 03-25-2019, 09:45 AM Thread Starter
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Air filter is on. It wants to run it just won't! Acts like it's starving for fuel.
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post #10 of 18 (permalink) Old 03-25-2019, 11:21 AM Thread Starter
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Filter in. Tries to start still no go. Acts like it's starving for fuel.
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