Subject	So there is so little flow that the fuel drains out of the
Posted by	not4resaleZ on January 20, 2017 at 10:07 AM
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In Reply To	yep i run them on the supply side. Signal gets choppy on the posted by Dane (Houston) on January 17, 2017 at 08:08 PM
Message	return line and air from the tank fills up the line and messes with the sensor? (a good reason to not run a larger return line, and to use a fuel pump controller) Having to run the fuel line uphill after the sensor to keep the sensor in fuel seems like a poor solution. Putting the sensor in the supply line may restrict flow, and if it's between the fuel rail and the regulator it could affect how well the fuel regulator controls pressure in the fuel rail.
Follow Ups	Flex fuel sensor issues - Zvil (FL) 11:43:03 01/17/17 What's your fuel pump setup? Single Walbro 485? - MixManMash 16:00:49 01/17/17 Stock fuel line and filter, 1 walbro 485 - Zvil (FL) 16:38:43 01/17/17 12s seem lean for running ethanol (E85). I think I - MixManMash 19:27:57 01/17/17 I agree that I need another fuel pump - Zvil (FL) 19:47:59 01/17/17 12:1 is fine if it's 35% ethanol. - MixManMash 21:42:48 01/17/17 But isn't that the beauty of a flex fuel sensor? - Zvil (FL) 07:18:25 01/18/17 Sure. (n/m) - MixManMash 07:44:42 01/18/17 yep i run them on the supply side. Signal gets choppy on the - Dane (Houston) 20:08:20 01/17/17 the reason it's on the return is that's what haltech recomme (n/m) - Zvil (FL) 05:49:30 01/18/17 It's recommended to go in the return line because it's a - dogpile 06:39:26 01/18/17 Roger that, just hoping to save someone else the - Zvil (FL) 07:01:36 01/18/17 Is this a common issue you've noticed ? - Stanky 09:58:50 01/18/17 Did you log differential fuelpressure by any chance? - kickerzx 15:12:49 01/18/17 I tried running a fuel pressure sensor in the past - Zvil (FL) 17:08:02 01/18/17 Get a new sensor here... - kickerzx 07:30:25 01/19/17 Oh. Forgot to mention. - kickerzx 07:39:47 01/19/17 I would question the accuracy of the fuel sensor - Zvil (FL) 10:23:03 01/19/17 No the sensor is solid. No question about it... - kickerzx 12:16:57 01/19/17 500hp for everyone! - Zvil (FL) 10:57:27 01/19/17 On e85 you might reach mbt before you knock - kickerzx 12:21:33 01/19/17 you're right but we were on e35 on the dyno (n/m) - Zvil (FL) 12:49:54 01/19/17 So there is so little flow that the fuel drains out of the - not4resaleZ 10:07:18 01/20/17 I bet you putting the sensor in the supply line doesn't - MixManMash 13:33:53 01/20/17 From what I've been told and what I've read - Adam675 14:10:45 01/20/17 Oh wow. That's interesting. (n/m) - MixManMash 14:55:48 01/20/17 if anyone's still paying attention to this post - Zvil (FL) 23:24:20 01/21/17
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