Flame out / cutting off - Club700XX - Honda TRX700XX Forum
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post #1 of 28 Old 11-21-2019, 03:57 PM Thread Starter
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Flame out / cutting off

I don't really get to ride my 700 as much, but when I do it randomly will shut off. Not while moving but when I come to a stop (like waiting on the group to cross something or if I stop to go over something slowly). It doesn't happen all the time but it will happen 3-4 times during say a 4 hour ride.
It usually starts right back up and is fine for a while.
On a few occasions I will start it right back it up and it will "poof" out, not backfire but just go poof. LOL.
Its all stock except DMC slip on and a DMC programmer and K&N filter.
I checked the valves and they were spot on.
Also, its always had the issue of from a cold start it will start up idle for about 5 seconds and shut off, start it again and it will idle for about 10 seconds then shuts off. 3rd time it stays running. This is every time I start it since I've owned it.
Any advice? I thought at one point it might be something with the engine stop switch, but its too random.
Do these have a fuel filter? Again I doubt this to be the problem since it would happen more often if the filter was dirty.
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post #2 of 28 Old 11-22-2019, 10:00 AM

 
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Do you have the service manual? Yes there's a fuel filter in the pump.

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#1 2008 Honda Trx700xx HMF Performance Exhaust, PCV, Stroked 710cc, 10.5:1 Wiseco Piston, Frt Elka Stage 4's, Fox Podium X rear's, EHS Lid, L8ton 11/16" sway bar, DG 6 Pack Rack, PRM Desert II Bumper & Front Skids.
#2 2008 Trx700xx AMR Reaper, Ehs Big 3, P/P head, Xcalibur Cam, Hard Welded Rockers, +1 In/Ex Valves, +3 Throttle body, 11:1 CP Piston, Elka Stage 3 Legacy Shocks, L8ton 11/16th Sway Bar, PRM Front Skids, Desert II Bumper & Rear Utility Rack.


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post #3 of 28 Old 11-23-2019, 03:59 PM Thread Starter
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Yes I have a service manual.
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post #4 of 28 Old 02-20-2020, 06:01 AM
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I have never had my 700 to die after starting cold. However I have had it stall or flame out when decelerating to slow down for a large puddle or cross a log etc. This is the one thing that I hate about my 700xx. I really wish I could find the source of the problem and resolve it. I thought about taking it to EHS to see if they could find the problem but he seams to be more interested in tuning in his performance parts. That is not what I want. I want my stock quad to run properly.

2017 Honda TRX500 Rubicon
2013 Husaberg FE350
2008 Honda TRX700XX
1995 Honda TRX 300EX
2001 Honda TRX 90
1986 Honda TRX 70
1985 ATC 250 SX
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post #5 of 28 Old 03-08-2020, 07:34 AM
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As I understand it honda updated the fuel filter kit. The updated kit has the filter mounting to the side rather than In the bottom. The theory is that the original setup will plug up with sediment possibly leading to a lean running condition. My 700 runs hot and stalls often. It does this so much that I rarely even want to ride it. I am going to get the new filter kit and see if this corrects the issues that I have experienced. If so I will probably really enjoy this atv.
When I figure out if this solves the stalling/heating issues I will start a thread discussing my findings.
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2017 Honda TRX500 Rubicon
2013 Husaberg FE350
2008 Honda TRX700XX
1995 Honda TRX 300EX
2001 Honda TRX 90
1986 Honda TRX 70
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post #6 of 28 Old 03-13-2020, 08:26 AM
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Good Morning Guys,
Ok here's 2 cents worth, Fuel issues are always possible, Fenmore I have almost the same set up as you do, DMC pipe & muffler, FMF fuel controller & Volocity Air Intake is how I got the Quad.
The same exact cold start 3 times & run fine, stall out sometimes on coast down or stop, & didn't run like the raped ape that it is or runs now, so what are the #'s your programmer have for fuel enhancement??
After investigation Dobeck Performance is who made my FMF controller, I contacted them (nice people) & we have a Stage 1 set up with are up grades he suggested reprogramming it to: 2, 3, 2.5, 5, 4, 4 .
The only time it stalls is if I blip the throttle before I stop!!!
2 cents.
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post #7 of 28 Old 03-13-2020, 09:27 PM
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I changed the fuel filter today using the updated kit from honda. I tried my best to make the quad engine stall but it never did. It was running cooler as well. It did not back fire or stall with the limited space that I have at home to test it. When I get a chance I will take it some where with more available riding and report back. I did run it down the street fairly fast and chopped the throttle which usually (before I changed the filter) causes it to backfire and/or stall. See the photos. The round filter is the original style from honda back in 2008/9 which sits in the bottom of the fuel bowl under the pump. The square filter mounts on the side of the fuel pump housing.
Attached Images
File Type: jpg plugged filterIMG_2287.jpg (91.1 KB, 14 views)
File Type: jpg new filterIMG_2292.jpg (87.9 KB, 16 views)
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2017 Honda TRX500 Rubicon
2013 Husaberg FE350
2008 Honda TRX700XX
1995 Honda TRX 300EX
2001 Honda TRX 90
1986 Honda TRX 70
1985 ATC 250 SX
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post #8 of 28 Old 03-13-2020, 09:46 PM
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I recently purchased the upgraded fuel filter. Have to ride to see how it works. The 700 is new to me, coming from a 400ex. Hopefully I’ll like it.
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post #9 of 28 Old 03-16-2020, 05:53 AM
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Listen to this guy as he describes the lean running condition that leads to over heating and the other issues associated with running too lean, back firing, flame out etc.

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2017 Honda TRX500 Rubicon
2013 Husaberg FE350
2008 Honda TRX700XX
1995 Honda TRX 300EX
2001 Honda TRX 90
1986 Honda TRX 70
1985 ATC 250 SX
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post #10 of 28 Old 03-16-2020, 12:20 PM
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Nice find Footy!!
Thanks
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