Fuel Pressure Regulator on Weber

John_5657 · 04-11-2007, 04:47 PM

HELLO

Anyone install a fuel pressure regulator on their weber? According to the FAQ on the Omix website the weber will run rich if there is more then 3.5lbs of fuel pressure.

http://www.omix-ada.com/faq.asp

Does anyone know how much pressure the stock fuel pump pushes??

John_5657 · 04-11-2007, 04:49 PM

Ohh yeah can someone explain how fuel pressure will cause the jeep to run rich?

krochus · 04-11-2007, 05:14 PM

Well if your fuel pressure is too high and overpowers the float valve assy I garuntee you that your engine will have a PIG RICH condition A.K.A. flooded.

Having worked with Webers on VW's and Z-cars it's totally beyond me why anyone would voluntarily put one of these crappy carbs on their ride. In my book the only thing worse than a weber carb is TWO weber carbs.

bgredjeep · 04-12-2007, 12:18 AM

The stock pump should push around 7-8 psi. I installed a cheap adjustable reg I picked up from Pep-boys and its been much better since. No more black smoke, and I don't smell like gas every time I drive the Jeep like I used to.

John_5657 · 04-12-2007, 09:22 AM

Quote:

Originally Posted by krochus

Well if your fuel pressure is too high and overpowers the float valve assy I garuntee you that your engine will have a PIG RICH condition A.K.A. flooded.

Having worked with Webers on VW's and Z-cars it's totally beyond me why anyone would voluntarily put one of these crappy carbs on their ride. In my book the only thing worse than a weber carb is TWO weber carbs.

Compared to the stock carb it runs more than 100% better. I don't know what your experiences are, but webers have had a good reputation in the Jeep community

John_5657 · 04-12-2007, 09:24 AM

Doesnt the float and needle valve stop the flow of fuel

ZickZJ · 04-12-2007, 04:50 PM

Quote:

Originally Posted by John_5657

Doesnt the float and needle valve stop the flow of fuel

I'm pretty sure the pump will over power them. Why not get a regulator and be done with it?

04-11-2007, 04:47 PM	#1
John_5657 Registered Join Date: Jul 2000 Location: NJ,NEWTON,USA Posts: 267 Thanks: 0 Thanked 0 Times in 0 Posts	Fuel Pressure Regulator on Weber HELLO Anyone install a fuel pressure regulator on their weber? According to the FAQ on the Omix website the weber will run rich if there is more then 3.5lbs of fuel pressure. http://www.omix-ada.com/faq.asp Does anyone know how much pressure the stock fuel pump pushes?? __________________ 87 YJ 4.2l 5spd Weber carb tow hooks CB, TFX Cat BACK, Best Top Trail max Seats, Warrior Bumper 30" tires canyon rims

04-11-2007, 04:49 PM	#2
John_5657 Registered Join Date: Jul 2000 Location: NJ,NEWTON,USA Posts: 267 Thanks: 0 Thanked 0 Times in 0 Posts	Ohh yeah can someone explain how fuel pressure will cause the jeep to run rich? __________________ 87 YJ 4.2l 5spd Weber carb tow hooks CB, TFX Cat BACK, Best Top Trail max Seats, Warrior Bumper 30" tires canyon rims

04-11-2007, 05:14 PM	#3
krochus Registered Join Date: Jan 2007 Location: Arkansas in the Ozarks Posts: 348 Thanks: 0 Thanked 0 Times in 0 Posts	Well if your fuel pressure is too high and overpowers the float valve assy I garuntee you that your engine will have a PIG RICH condition A.K.A. flooded. Having worked with Webers on VW's and Z-cars it's totally beyond me why anyone would voluntarily put one of these crappy carbs on their ride. In my book the only thing worse than a weber carb is TWO weber carbs. __________________ The trail rig and weekend toy91 Jeep YJ 4.0 ax15, 2.5" pro comp, barless, and Aussie locked, SYE'd with 4.10 cogs rolling on 31" buckshots. Spooled 9" rear in the works. Topless till October The daily Driver mall Crawler97 Jeep ZJ Laredo 4.0 np242 with 3.73's, 2.25" BB on 31's

04-12-2007, 09:24 AM	#6
John_5657 Registered Join Date: Jul 2000 Location: NJ,NEWTON,USA Posts: 267 Thanks: 0 Thanked 0 Times in 0 Posts	Doesnt the float and needle valve stop the flow of fuel __________________ 87 YJ 4.2l 5spd Weber carb tow hooks CB, TFX Cat BACK, Best Top Trail max Seats, Warrior Bumper 30" tires canyon rims

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04-12-2007, 12:18 AM	#4
bgredjeep Registered Join Date: Aug 2004 Location: Augusta, GA Posts: 544 Thanks: 0 Thanked 0 Times in 0 Posts	The stock pump should push around 7-8 psi. I installed a cheap adjustable reg I picked up from Pep-boys and its been much better since. No more black smoke, and I don't smell like gas every time I drive the Jeep like I used to.