Author Topic: bike running rough  (Read 614 times)

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Offline Ianmc

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Re: bike running rough
« Reply #20 on: January 11, 2019, 19:09:38 »
Back to basics again.Did you check the tank breather ?
Ian Mc.

Offline claw

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Re: bike running rough
« Reply #21 on: January 11, 2019, 19:29:25 »
I had it running today with the fuel cap open and it made no difference. I will check the vent anyway to be sure its not blocked, thanks. Just to be sure is the tank breather also the over flow?

Offline Ianmc

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Re: bike running rough
« Reply #22 on: January 11, 2019, 23:50:27 »
Did you run on the road with the cap open ? If you have a spare key you could run the bike until it starts playing up then open the cap to see if it makes any difference.Running the engine stationary will not recreate the fault.
Ian Mc.

Offline claw

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Re: bike running rough
« Reply #23 on: January 12, 2019, 10:27:01 »
Will give it a try thanks

Offline kwackboy

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Re: bike running rough
« Reply #24 on: January 12, 2019, 11:34:52 »
With the new external fuel filter in place I then reverted to my original bypass (as in the picture) and the bike runs great again.

Correct me if I'm not reading this right but is this not your answer ?
Leave the bypass and have a permanent external filter..?
From what you are saying it sounds like the high pressure filter is the problem .
Also if your bike ran good with the bypass your fuel cap will be fine . 
kawasaki GTR 1400 2010, Honda CB500F 2015

Offline wurzel

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Re: bike running rough
« Reply #25 on: January 12, 2019, 11:56:34 »
That is how it came across to me too, it sounds like you have cracked the issue.

Offline claw

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Re: bike running rough
« Reply #26 on: January 12, 2019, 21:10:24 »
Quotes removed

Thanks for the replies. I agree with what you say but I am concerned about a couple of things.

1:  That there would be no pressure regulator ( I don't really know the importance of it? I spoke with a bloke today and he thinks it would not be a concern, but I don't know. I understand what its for but don't know what issues would arise in the future without it, if any? Where would excess fuel under pressure go?

2:If I leave as in the picture then I would be without the fuel gauge, but I could keep it in the tank with another modification?

Thanks for the replies.

Offline kwackboy

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Re: bike running rough
« Reply #27 on: January 12, 2019, 21:46:43 »
Blimey , of course how stupid of me , yes.
I didn't even think about the regulator or the gauge ,many apologies.  :dl_smiley_banghead: :shy:

You need the pressure regulator to maintain the correct amount of fuel that the injectors need otherwise your bike could run lean or rich.

Because of what tests you have done I'm still of the opinion your high pressure fuel filter maybe the issue but they are super expensive to replace.
The best cost effective solution would be to try and buy a whole second hand fuel pump unit and give that a try.

 

kawasaki GTR 1400 2010, Honda CB500F 2015

Offline claw

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Re: bike running rough
« Reply #28 on: January 12, 2019, 22:51:50 »
I have done the bypass as in the picture. The only thing I can see which could be an issue is the O ring around the outlet fuel line and the rubber bush at the top of the fuel pump. If they were dodgy then fuel under pressure could be escaping back into the tank thus loosing pressure along the way to the new external fuel filter. I have opened the fuel cap to listen for any suspicious noises but can't hear any. Any thoughts on this? A lot of other people have done this mod with no issues till now.

Offline Ianmc

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Re: bike running rough
« Reply #29 on: January 12, 2019, 23:33:54 »
Is the unit totally sealed or could the HP filter be removed and cleaned,then refitted.
Ian Mc.

Offline claw

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Re: bike running rough
« Reply #30 on: January 13, 2019, 10:49:22 »
The filter can't be cleaned and is totally sealed so has to be replaced.

Offline Gert

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Re: bike running rough
« Reply #31 on: January 14, 2019, 08:01:30 »
I remember reading of some who have had success in cleaning the high pressure filter, by running it in reverse for a few minutes.
A few threads to read as reference:

https://www.stromtrooper.com/dl650a-2012-2016/417599-she-needed-drink.html, (She needed a drink!)

https://www.stromtrooper.com/v-strom-service-maintenance-questions-discussions/319330-does-sound-like-bad-fuel-pump-idk.html, (Does this sound like a bad fuel pump or... idk?)

https://www.stromtrooper.com/DL650-dl650a-2004-2011/360914-fuel-pump-gremlins.html, (Fuel Pump Gremlins?)