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Fuel Fuel Delivery

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  • 2 Post By TomTom
  • 1 Post By jon andersson
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January 26th, 2017, 08:17 AM   #1
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Joined: Nov 2012
From: Sweden

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I Ride: HB 570 FE
570 injector malfunction woes.

So Ive been having some trouble with my bike for a while. I managed to track the problem to the injector because as soon as I took the injector out it ran good for like ten minutes and then back to mrs grumpy, second time it was out I had it professionally cleaned, but same result, ran ok for ten minutes.

Symptoms would be it takes a dozen revolutions for it to start warm (anything but stone cold), bogs on low revs and engine sound slightly cracked up (lean condition). I hooked the lambda up and it would start at ok AFR but in a minute or so it would gradually go leaner and leaner. So its not clogged it just wont deliver fuel as it should.

Today I fitted a brand new injector and now it runs well all the time *sigh of releif*
Just a heads up.

Edit: I also replaced the male fuel connector with the equivalent KTM part (77707010000) that has a filter in the connector, this part fits the OEM female.
Im going to fit a golan filter eventually, this was the quick fix and I like the idea that the filter is easily accessible.
Thanks from jon andersson and tourist

Last edited by TomTom; January 26th, 2017 at 08:25 AM.
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January 26th, 2017, 06:54 PM   #2
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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
Try cleaning the old one your self. To see if it's right check the spray pattern on a piece of cardboard. Should be a nice round pattern. You have hook it up to hose on your bike. You may or may out learn something.
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January 27th, 2017, 01:18 AM   #3
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I Ride: Two FE570 -12
Sometimes they just break. Nothing else to do but to buy a new one.
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January 27th, 2017, 09:58 AM   #4
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I Ride: HB 570 FE
Totally works now! Rode it today and yesterday with no issues. Good starting cold or warm and a different post code of umpf

Last edited by TomTom; January 29th, 2017 at 06:00 AM.
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570, injector, malfunction, woes

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