Louis 14 Posted August 4, 2020 Hey guys, I'm having an issue. My 07 honda rancher trx420fm 4x4 will turn over but not start. It is getting fuel and spark but won't run. I tried a little ether and itll run for just a second but that's it. Any ideas? Share this post Link to post Share on other sites
jeepwm69 7,719 Posted August 4, 2020 If it fired with ether you're not getting fuel, or rather not getting ENOUGH fuel. Run a jumper wire from battery + to the red coil wire. See if it starts. That bypasses a lot of the sensors in crap on the 420's 2 Share this post Link to post Share on other sites
Louis 14 Posted August 4, 2020 I actually just tried that right before posting and it still wouldn't run. I have another fuel injector ordered but I soaked the old one and plugged it back in but before I installed it I tried starting it and fuel sprays out good Share this post Link to post Share on other sites
jeepwm69 7,719 Posted August 5, 2020 16 hours ago, Louis said: I actually just tried that right before posting and it still wouldn't run. I have another fuel injector ordered but I soaked the old one and plugged it back in but before I installed it I tried starting it and fuel sprays out good Sounds like a fuel problem for sure then. How long has it been since you changed the fuel filter? Share this post Link to post Share on other sites
Louis 14 Posted August 5, 2020 (edited) Not long at all. It has brand new fuel pump and filter but it isn't OEM. You think that's the problem? Maybe it isnt giving it enough pressure? Thing is, it is getting fuel so you think it would atleast try to run at first Edited August 5, 2020 by Louis Share this post Link to post Share on other sites
jeepwm69 7,719 Posted August 5, 2020 Yeah I would swap an OEM pump on there. I don't use any china parts on these newer machines. They're finicky about parts. I buy used OEM before I buy new aftermarket. 1 Share this post Link to post Share on other sites
Louis 14 Posted August 5, 2020 Ok gotcha, do you have any other ideas before doing that? Share this post Link to post Share on other sites
shadetree 5,969 Posted August 5, 2020 if it hits off starting fluid ?, but not off the reg fuel ?, then this is a fuel delivery issue. 420's are bad about the fuel pumps going out. just because you see some fuel coming out of the injector ?..DOES NOT MEAN IT HAS ENOUGH FUEL PRESSURE !. 2 Share this post Link to post Share on other sites
Louis 14 Posted August 5, 2020 I was thinking that also but wasn't sure because it is getting fuel and I was thinking it would atleast try to run. I'll replace that and go from there Share this post Link to post Share on other sites
shadetree 5,969 Posted August 5, 2020 7 minutes ago, Louis said: I was thinking that also but wasn't sure because it is getting fuel and I was thinking it would atleast try to run. I'll replace that and go from there i'll bet ya a dollar, once you replace the fuel pump, maybe clean or replace the injector ?, it will fire right up..bet ???..lol. 1 Share this post Link to post Share on other sites
shadetree 5,969 Posted August 5, 2020 and for the record ?, those pumps have a fuel filter in the inside bottom of them, they clog up alot. 1 Share this post Link to post Share on other sites
hfd59 3 Posted August 18, 2020 I have a 2012 420 that would crank but no start. Replaced the fuel pump and filter with Honda parts and still won't start. Has compression, spark, fuel to the injector, fuel spraying from injector when tested out of the machine. Am I looking for a relay or something else that's causing this. thanks Share this post Link to post Share on other sites
shadetree 5,969 Posted August 18, 2020 16 minutes ago, hfd59 said: I have a 2012 420 that would crank but no start. Replaced the fuel pump and filter with Honda parts and still won't start. Has compression, spark, fuel to the injector, fuel spraying from injector when tested out of the machine. Am I looking for a relay or something else that's causing this. thanks please start your own thread in the utility section. Share this post Link to post Share on other sites
Misterclean 420 Posted September 8, 2020 (edited) Does anyone know what the solution was? I have two 420's and want to know. Edited September 8, 2020 by Misterclean 1 Share this post Link to post Share on other sites
_Wilson_™ 6,591 Posted September 12, 2020 On September 8, 2020 at 2:04 PM, Misterclean said: Does anyone know what the solution was? I have two 420's and want to know. id like to know an update on this myself. Share this post Link to post Share on other sites
Louis 14 Posted September 21, 2020 On 9/12/2020 at 11:12 AM, _Wilson_™ said: id like to know an update on this myself. Hi, sorry just now saw this. I ended up replacing the ecu and the fuel pump with an OEM replacement. FYI, never try using an aftermarket fuel pump. They do not supply enough pressure for it to run. Hope this helps 1 Share this post Link to post Share on other sites
Louis 14 Posted September 21, 2020 On 8/5/2020 at 11:30 AM, shadetree said: i'll bet ya a dollar, once you replace the fuel pump, maybe clean or replace the injector ?, it will fire right up..bet ???..lol. Hi shadetree, just wanted to give an update. I did replace the fuel pump with a new OEM and it fired right up. Thank you very much for all the help and support 6 Share this post Link to post Share on other sites
_Wilson_™ 6,591 Posted September 21, 2020 i was curious .... because @Misterclean had commented about a couple 420's ... and was also asking .. the thought of the filter in the pump was what i was thinking .. glad she's back up and running, and thank you for the update! 1 Share this post Link to post Share on other sites
shadetree 5,969 Posted October 9, 2020 On 9/21/2020 at 9:34 AM, Louis said: Hi shadetree, just wanted to give an update. I did replace the fuel pump with a new OEM and it fired right up. Thank you very much for all the help and support ty for the update, now where's my dollar ??..rofl. 1 Share this post Link to post Share on other sites
James 0 Posted January 12, 2021 I have a 2007 Honda rancher and I let it sit for about a week or two. I wanted to go ride one day and it would turn over but not fully start. I have replaced the fuel pump with a new oem one and I have replaced the throttle body and everything that goes onto the throttle body and it still has the same problem. Any thoughts? Share this post Link to post Share on other sites
jeepwm69 7,719 Posted January 12, 2021 Welcome to the board. Try shooting a shot of gas/ starting fluid in the intake while cranking, to see if you have a fuel delivery problem or if you lack spark. Any issues with it running before now? Share this post Link to post Share on other sites
James 0 Posted January 12, 2021 It will run off of starting fluid but nothing else. I have never had any issues with it. I bought it offline and I had it running for a long while until it just stopped. The dude I bought it from told me it had a few problems with water on the electrical but I haven’t had a problem with the atv itself until now Share this post Link to post Share on other sites
jeepwm69 7,719 Posted January 12, 2021 Put a jumper wire from battery + to red/ black wire on the coil. Will it run then? Share this post Link to post Share on other sites
James 0 Posted January 12, 2021 It will still not run and I have noticed that no lights on the gauge cluster are on. Like the neutral light and it also doesn’t register for reverse. Share this post Link to post Share on other sites
Fishfiles 20,147 Posted January 12, 2021 7 minutes ago, James said: It will still not run and I have noticed that no lights on the gauge cluster are on. Like the neutral light and it also doesn’t register for reverse. Hi James , you should have started a thread of your own , you still can , I am sure we can swop these couple of post to the new thread --- first thing I would do is check the fuses for power with a test light , then I would check electrical connection plugs for corrosion at the pins and sockets and check wiring for damaged spots from mice or melting 2 Share this post Link to post Share on other sites