Fuel Pump Solution - All Failure Modes
06-07-2012, 09:41 AM
#576
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Sorry for adding another post to this thread but i have a problem... Installed the BHR Pump which is brilliant! But i still have a minor problem, When the fuel gets to less than half (say between half and quarter) at high revs she kind of starves and stops on the power at 6k? Any ideas?
Last edited by Bonesy; 06-07-2012 at 09:48 AM.
06-13-2012, 01:04 AM
#577
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Now i didn't notice this until i already put my pump back in but i installed a walbro and didn't melt down the pop off cap, however i couldnt even wedge anything between it to get it to pop open. I'm not planning on boosting it in fact I'm pretty sure I'm trading it in on a 350z in the next two weeks, should it be something to worry about?
06-13-2012, 02:10 AM
#578
Now i didn't notice this until i already put my pump back in but i installed a walbro and didn't melt down the pop off cap, however i couldnt even wedge anything between it to get it to pop open. I'm not planning on boosting it in fact I'm pretty sure I'm trading it in on a 350z in the next two weeks, should it be something to worry about?
06-13-2012, 04:11 AM
#579
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should it be something to worry about?
06-26-2012, 12:58 AM
#580
So i have read through this entire thread and have gone back and read through parts of it again and i have one question.
Does the pop off valve that you melt prevent the integral fuel pressure regulator from operating correctly? After you do the mod will you still have a properly functioning pressure regulator ensuring about 60 psi to the rails?
My friend was telling me that if i run an upgraded fuel pump i will run more rich. I'm concerned with this since my car is NA and will be for probably a year or longer, but my fuel pump is bad now
Sorry if i've missed something...just want to make sure i understand correctly.
Does the pop off valve that you melt prevent the integral fuel pressure regulator from operating correctly? After you do the mod will you still have a properly functioning pressure regulator ensuring about 60 psi to the rails?
My friend was telling me that if i run an upgraded fuel pump i will run more rich. I'm concerned with this since my car is NA and will be for probably a year or longer, but my fuel pump is bad now
Sorry if i've missed something...just want to make sure i understand correctly.
Last edited by Warrior777; 06-26-2012 at 01:02 AM.
06-26-2012, 01:05 AM
#581
The siphon has no real effect on the regulator...so you will be OK
At some point I suppose the flow from the pump could theoreticall overpower the siphon/ regulator discharge...but it doesn't do it at the flow levels from any pump in the 350l or less area
At some point I suppose the flow from the pump could theoreticall overpower the siphon/ regulator discharge...but it doesn't do it at the flow levels from any pump in the 350l or less area
07-11-2012, 01:38 PM
#585
First off, sorry for posting this question in this thread........
I recently replace my OEM pump with a BHR sourced 255 Walbro. During installation it was obvious that the stock fuel pump O-ring was too thick and wouldn't fit with the new pump. Having missed the fact that you need to use a thinner O-ring with the 255, I just installed the pump without an O-ring. The 255 Walbro from BHR did not come with a thinner O-ring either. Any idea what issues can come of not using an O-ring? Do I need to take it back apart and add a thinner O-ring? The pump installation happened about three weeks ago and I have had no issues daily driving it, but I have not had a track event since the new pump.
Since I missed the fact that a thinner O-ring was needed, would it be beneficial if the first post mentioned this thinner O-ring?
Thanks in advance for the help.
I recently replace my OEM pump with a BHR sourced 255 Walbro. During installation it was obvious that the stock fuel pump O-ring was too thick and wouldn't fit with the new pump. Having missed the fact that you need to use a thinner O-ring with the 255, I just installed the pump without an O-ring. The 255 Walbro from BHR did not come with a thinner O-ring either. Any idea what issues can come of not using an O-ring? Do I need to take it back apart and add a thinner O-ring? The pump installation happened about three weeks ago and I have had no issues daily driving it, but I have not had a track event since the new pump.
Since I missed the fact that a thinner O-ring was needed, would it be beneficial if the first post mentioned this thinner O-ring?
Thanks in advance for the help.
07-11-2012, 08:44 PM
#586
Hey JCrane82
I don't know if it means anything but i installed my BHR sourced 255 Walboro with stock pump O-ring and it pooped out after 5 days? Charles is awesome and is sending me another pump.
Maybe that is my problem??? I don't know. Anybody have any ideas whether we should get a thinner o-ring, use no o-ring or use the stock o-ring??
I don't know if it means anything but i installed my BHR sourced 255 Walboro with stock pump O-ring and it pooped out after 5 days? Charles is awesome and is sending me another pump.
Maybe that is my problem??? I don't know. Anybody have any ideas whether we should get a thinner o-ring, use no o-ring or use the stock o-ring??
Last edited by Warrior777; 07-11-2012 at 08:51 PM.
07-12-2012, 07:33 AM
#588
When I did my install it was 9 PM at night, so I was not able to run to a local hardware store and get a thinner O-ring. Looking at the design of the system, it appears that the O-ring's purpose is to control the pump's movement. When I installed the pump without O-ring, there was little movement possible, but I am unsure if the pump will maintain a seal with the sock filter over time. The O-ring does not appear to be a seal of any kind, since the pumps inlet is at the bottom and seals to the sock filter. Thoughts?
07-15-2012, 01:39 AM
#590
Installed the Walboro 255 for the second time. Kept the oem fuel gasket. The fuel element as well as the sock looked good. Fingers crossed for a good pump and no issues.
Can i suspect my fuel economy to suffer with the walboro 255 compared to stock?
Can i suspect my fuel economy to suffer with the walboro 255 compared to stock?
07-15-2012, 02:11 AM
#591
I have also installed the walbro recently and noticed no changes in fuel economy, the fuel pressure regulator will keep things in check
08-07-2012, 12:27 PM
#595
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yea, i was the unlucky ones....
Check ur email soon, will be needing some midpipe and maybe another pump
08-07-2012, 04:59 PM
#597
08-07-2012, 07:31 PM
#599
Mine died at the track, only option was what Advance Auto could get the next day. Full assembly was $200, went right in, got half a track day, no issues.
And, if I even suspect it is failing, I have the factory assembly to put a good pump in and play with.
And, if I even suspect it is failing, I have the factory assembly to put a good pump in and play with.
