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July 11th, 2014, 04:28 PM   #41
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Originally Posted by Ruger View Post
Buy the California Cycle Works fuel pump and you will solve your problem forever.
I just had to replace my CA cyclework fuel pump due to it no longer pumping enough pressure. I now have my 4th, (yes, count them 1,2,3,4) pump installed in my 2010 570. 2 KTM pumps, 1 CA cycleworks pump and now another KTM pump.
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July 28th, 2014, 04:30 AM   #42
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Was having a problem running from cold. Thought I would post the information if it can help others.

Started a ride and from the house I could feel a slight hesitation when coming on to the gas which is not normal. After a half hour riding she started to backfire on decel, which she never does. I should say my bike is an 09 FE570 mapped set to wild with FMF powerbomb and FMF 4.1 can. So I shut her off when meeting up with a friend, she started no problem and we set off. The hesitation was still present and the backfiring got progressively worse.

5 minutes afterwards crossed a 25 foot long puddle on the back wheel but front came down halfway through and soaked the bike and myself really good, hot day so no prob for me but the bike stalled on the other side of the puddle. Had a hard time starting after, finally got it going but needed to keep revs up for it not to stall. The idle was weak an not at all confidence inspiring.

Arrived at destination and shut bike off for 45min-1 hour. She started after a couple tries but again had to keep the revs high. Headed for home to figure out problem. On the way back using the street the bike would bog under acceleration and be jerky and constant throttle. The back firing was really bad by now.

We started by testing the battery and it was losing charge, so new battery... New battery in, big would turn over alot better but would not start. Changed the spark plug for a new one and inspected connectors wires and grounds. Fixed a couple of chaffed wires which have been grounding when wet, unsure. Bike still wouldn't start. Proceeded to take out gas and put fresh gas in with some seafoam cleaner. After 5-10 minutes of letting that sit, still no go.

So off comes the tank. Checked all wires and connections again. Good pressure in the fuel line. No pressure build up in gas tank by the way. Opened gas tank to check fuel filters. Main filter is dark colour, filter beneath pump is clean. Put 12V to pump, it's turning and pumping well. Blew and sucked from other side off filter, one way valve working and mouth full of gas. Checked again good flow from pump at other side of pressure regulator.

At this point put everything back to try starting again. Hit the started button, idles likes an FE570 should. Let her idle 15-20 minutes with new gas and seafoam. Gave her some throttle, no hesitation from idle and no backfiring. but

So though I can pin point what the exact fix was or if it will last this is my experience with an ill 570 so far.

I was ready to order CA pump and fuel filter kit but am holding off for now.
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November 1st, 2014, 12:08 PM   #43
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Great post , this has helped me diagnose my fault
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November 1st, 2014, 12:09 PM   #44
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November 1st, 2014, 12:10 PM   #45
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Here's the fuel filter and the pump on my 390, I've changed the filter but after reading this I'll have to take apart for upgrading fuel pump lol
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November 3rd, 2014, 05:04 AM   #46
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The rest of the story.

My issues were not gone for good. I even had to scrap a rally after limping back on the first stage.

But to bring you up to date by this time I had installed new fuel filters and a CA pump...

I thought the filter was an issue because when I took it out it was filthy with fine black particles which I cycled out of the pump as well. Went with that for a while but not long. So after reading about the many bad pumps I got one and installed it. The bike then ran fine for 2 runs of mixed riding from some fast fire roads to muddy abandoned trails and everything in between. I would even say it ran stronger than before.

So now confident, I head off to the inaugural Fundy Adventure Rally with 2 teammates. We rode down on the the Friday afternoon without issue. The Saturday morning welcomed us with thick fog. So we set out and halfway done the first 80km leg those oh so familiar symptoms start up again. Heart sinks.... So I limp back to base and park it for the weekend and ride in the sweep truck to help out.

So I'm thinking the only thing left to do is change the injector...

Funny, one of the rally participants happens to work for Bosch and says you my friend need an $8 dollar injector but you will pay $170 for it. So funny. So I bit the bullet and got and installed new injector. While I was replacing the injector I discovered the "securing tab" on the map sensor coupler (81241085044 MAP SENSOR CPL.) was broken off. So there was nothing holding it in place. It would explain my intermittent issues with water. Anyway so I used zip ties to secure it in place, it's not moving any time soon...

So the result is the bike has been working fantastic ever since. I suppose it should the majority of the fueling system has been upgraded to new... It may be that I changed all those other things when a couple zip ties were all I needed. But at least I've a fresh fuel system and spare parts! Glass half full.

That's it for now. I hope the problem does not resurface because I will then be at a loss. I'll write back if anything comes up again. Hopefully not.
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Last edited by CDNBERG; November 3rd, 2014 at 05:09 AM.
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November 3rd, 2014, 06:39 AM   #47
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Thanks for that! Solid info.

I'm so annoyed at that injector markup nonsense that I'll pay your new Bosch friend $340 if he tells me how I can get the injector for $8!
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February 21st, 2015, 08:51 PM   #48
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fuel issue

Hi guys new to forum having problems with my 570 not restating when hot doesn't stop or run rough but when you stop it it want restart. Got home run it same thing pulled air cleaner out sprayed carby cleaner down the throttle body then runs again, any ideas would be appreciated.
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February 28th, 2015, 10:38 AM   #49
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I can't believe that either , another great post. Mine still playing up after the fuel pump and filters .
Going Spain in May so I'm gonna have a look at map sensor coupling thanks
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February 28th, 2015, 10:40 AM   #50
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Cdnberg have you got pics of the component at fault please
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