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May 14th, 2018, 10:41 AM   #41
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Joined: Feb 2018
From: Oakland, CA

Posts: 30
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I Ride: 2009 FE570, 2007 DR650
backfire and stall problem...

Hi all. Been slowly tracking down all the tiny issues and getting to know this bike. I have a 300 mile dirt ride coming up this weekend. Yesterday I had it stall about 5 times in 5 hours. Mostly just getting off the throttle in 2nd gear. Maybe a bit of engine breaking down a hill too although not in all cases. Almost every time it would immediately start back up and it always ran great except those moments. Plenty of power. Felt great. It would backfire slightly just before it died. I would love to fix the problem obviously but I'm mostly wondering if I should ride it the 300 miles of dirt coming up. Does this sound like something that will cause permanent damage or just be a pain in my ass a couple times a day?
Help!! I don't want to ride my old DR after 6 months of dialing this rocketship in!
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May 14th, 2018, 10:51 AM   #42
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From: San Francisco CA. USA

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I Ride: 7 Husabergs two FE570S,FS570 FE390/450,07 FE650,05 FE550,2 Husqvarna's 86 WR400,87 510,09 Buell
Fuel pump is the first thing I think of. Reasons bad pump,fuel gets hot from exhaust pipe. Other might be TPI could need adjustment.
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Last edited by Rainerio; May 14th, 2018 at 10:56 AM.
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May 14th, 2018, 11:05 AM   #43
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From: Oakland, CA

Posts: 30
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I Ride: 2009 FE570, 2007 DR650
Throttle sensor was what I was thinking too from a small bit of research. Fuel pump is a good point. I wonder if I can tough out 300 miles of taking a pause now and again when it stops or if it will just get worse and strand me.
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May 14th, 2018, 11:47 AM   #44
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I Ride: 7 Husabergs two FE570S,FS570 FE390/450,07 FE650,05 FE550,2 Husqvarna's 86 WR400,87 510,09 Buell
When mine went just a pop and done wouldn’t run again. Coasted for 3 miles and pushed for 500 yards before my friends found My. Maybe if the riding you do is with a lot of airflow that might help? Like Fire roads not 1st gear single tracks.
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Last edited by Rainerio; May 14th, 2018 at 11:49 AM.
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May 17th, 2018, 08:49 PM   #45
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Joined: Feb 2018
From: Oakland, CA

Posts: 30
Thanks: 10

I Ride: 2009 FE570, 2007 DR650
Found that the screw on the positive terminal of the battery had rattled out and the connection was super sketchy. Am I safe in assuming that's the issue? I imagine it was connected most of the time but on downhills it would vibrate, disconnect and kill the bike. If this is the fix I am seriously stoked. This weekend will be completely saved. Hoping that's the case!
Thanks from tourist and Rainerio
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May 18th, 2018, 12:40 AM   #46
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I Ride: 1 Berg, 1 Zook
I’m fairly sure that could cover it!!
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May 18th, 2018, 02:30 AM   #47
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I Ride: 7 Husabergs two FE570S,FS570 FE390/450,07 FE650,05 FE550,2 Husqvarna's 86 WR400,87 510,09 Buell
Great find
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May 18th, 2018, 05:57 AM   #48
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From: Europe

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I Ride: '12 Husaberg FE 450
Mine also had some very corroded battery terminals. After cleaning, adjusting tps, new fuel filter, starts better. Sometime it's easy! Could very well be the fix!
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July 16th, 2018, 02:45 PM   #49
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Joined: Feb 2018
From: Oakland, CA

Posts: 30
Thanks: 10

I Ride: 2009 FE570, 2007 DR650
Another update...

I know I've asked this question before on here but just in case I'll try one more time. Most of the bolts on the two plastic tanks (stock and subframe) are stripping out the plastic from the PO over-torquing everything. I've tried the JBWeld ClearWeld I used to fix the leaky subframe tank to fill a hole but it's too soft after it cures to get any real torque on it. Any ideas?

Because...
Long story, but after solving the last problem I had with the positive battery connection coming loose, the bike ran great and fired up reliably. So I rode the hell out of it for a day and a half of my 300 mile dirt weekend. I had a ton of fun, and other than realizing my suspension was a bit oversprung (it felt good to me but by the end of the first day I realized my helmet was bouncing off my head and giving me quite the headache) the bike was amazing. I had been riding in fairly slow technical conditions and the 570 is a lot in that context but flying down fire roads and doing more 3rd/4th gear stuff is perfect for this thing (makes me want to get a throttle tamer or a 390). Anyway, halfway through the second day the thing started to die again but in a completely different way. It would just go dead not even attempt to start again until it cooled down. Typical for what I've read about the fuel pump issues. So I quit for the day and trucked it back (after 5 hours in a casino waiting for my buddy to get back to camp and come rescue me).
SO, in replacing the fuel pump (from CA Cycleworks) I ran into two problems. The PO with the heavy hands and no sense of doing anything with any thought or care had not only stripped out the screws on the pressure regulator at the top of the tank, but had also rammed a screw that was a quarter inch too long in there, poking another hole in the damn tank. What a dumbass. So that whole story just to ask the question again, I need to fix the hole (presumably ClearWeld will do that as it has in other instances so far) AND fix the threads (which ClearWeld is not doing very well), AND the shroud bolts are all stripped too, so what should I use?

(I also replaced the fuel filter in the tank and covered the bottom in the heat resistant tape stuff I've read about on here. Now this thing fires up on the first try every damn time. Super happy. And it runs so great. I just can't fill it up past those screws holding the regulator in.)

Looking forward to your advice!

Last edited by 2ndGen; July 18th, 2018 at 11:27 AM.
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