Fuel pressure regulator??????
I got a problem, I put a weber carb on my 256 awhile back and have noticed
that it has been running rich. After many hours of adjusting and tweaking the carb I called Weber and they said that I need to knock down my fuel pressure. The mechanical fuel pump puts out aprox 5-6 psi and the carb needs 2.5-3psi. All the parts stores that I have talked to say that there is nothing I can use to drop the pressure. I would think that there has to be some sort of regulator that will output a fixed or adjustable pressure that I can put in the fuel line after the pump. If anyone knows of a part # or manufacture that I can get something to fix this I would be forever in your debt. Thanks Scott 90YJ |
Re: Fuel pressure regulator??????
For what it's worth ... the fuel pressure sounds ok to me (my V6 boat engine
spec is 3-7 psi). You need that pressure to supply sufficient fuel at running speed. Might I suggest the carb may have been modified either for a larger engine or by someone to run rich(er) ... meaning the primary jets/metering rods (I'm a 4 bbl guy, excuse my ignorance here) may be "oversize". "Foot Loose" <footloose61@ NOSPAM hotmail.com> wrote in message news:40216b30_3@newspeer2.tds.net... > I got a problem, I put a weber carb on my 256 awhile back and have noticed > that it has been running rich. After many hours of adjusting and tweaking > the carb I called Weber and they said that I need to knock down my fuel > pressure. The mechanical fuel pump puts out aprox 5-6 psi and the carb needs > 2.5-3psi. All the parts stores that I have talked to say that there is > nothing I can use to drop the pressure. I would think that there has to be > some sort of regulator that will output a fixed or adjustable pressure that > I can put in the fuel line after the pump. If anyone knows of a part # or > manufacture that I can get something to fix this I would be forever in your > debt. Thanks > > > Scott > 90YJ > > |
Re: Fuel pressure regulator??????
For what it's worth ... the fuel pressure sounds ok to me (my V6 boat engine
spec is 3-7 psi). You need that pressure to supply sufficient fuel at running speed. Might I suggest the carb may have been modified either for a larger engine or by someone to run rich(er) ... meaning the primary jets/metering rods (I'm a 4 bbl guy, excuse my ignorance here) may be "oversize". "Foot Loose" <footloose61@ NOSPAM hotmail.com> wrote in message news:40216b30_3@newspeer2.tds.net... > I got a problem, I put a weber carb on my 256 awhile back and have noticed > that it has been running rich. After many hours of adjusting and tweaking > the carb I called Weber and they said that I need to knock down my fuel > pressure. The mechanical fuel pump puts out aprox 5-6 psi and the carb needs > 2.5-3psi. All the parts stores that I have talked to say that there is > nothing I can use to drop the pressure. I would think that there has to be > some sort of regulator that will output a fixed or adjustable pressure that > I can put in the fuel line after the pump. If anyone knows of a part # or > manufacture that I can get something to fix this I would be forever in your > debt. Thanks > > > Scott > 90YJ > > |
Re: Fuel pressure regulator??????
For what it's worth ... the fuel pressure sounds ok to me (my V6 boat engine
spec is 3-7 psi). You need that pressure to supply sufficient fuel at running speed. Might I suggest the carb may have been modified either for a larger engine or by someone to run rich(er) ... meaning the primary jets/metering rods (I'm a 4 bbl guy, excuse my ignorance here) may be "oversize". "Foot Loose" <footloose61@ NOSPAM hotmail.com> wrote in message news:40216b30_3@newspeer2.tds.net... > I got a problem, I put a weber carb on my 256 awhile back and have noticed > that it has been running rich. After many hours of adjusting and tweaking > the carb I called Weber and they said that I need to knock down my fuel > pressure. The mechanical fuel pump puts out aprox 5-6 psi and the carb needs > 2.5-3psi. All the parts stores that I have talked to say that there is > nothing I can use to drop the pressure. I would think that there has to be > some sort of regulator that will output a fixed or adjustable pressure that > I can put in the fuel line after the pump. If anyone knows of a part # or > manufacture that I can get something to fix this I would be forever in your > debt. Thanks > > > Scott > 90YJ > > |
Re: Fuel pressure regulator??????
Also, if fuel is actually "leaking" past the float/needle valve and
"dripping" into the carb, check that out. It's the job of that assembly to enable/disable fuel flow keeping the fuel bowl topped up. So you can see where I'm going with this ... my thinking, the problem can in no way be caused by 5-6 psi fuel pressure. "bowgus" <Bowgus@rogers.com> wrote in message news:UBfUb.152910$ef.141084@twister01.bloor.is.net .cable.rogers.com... > For what it's worth ... the fuel pressure sounds ok to me (my V6 boat engine > spec is 3-7 psi). You need that pressure to supply sufficient fuel at > running speed. Might I suggest the carb may have been modified either for a > larger engine or by someone to run rich(er) ... meaning the primary > jets/metering rods (I'm a 4 bbl guy, excuse my ignorance here) may be > "oversize". > > "Foot Loose" <footloose61@ NOSPAM hotmail.com> wrote in message > news:40216b30_3@newspeer2.tds.net... > > I got a problem, I put a weber carb on my 256 awhile back and have noticed > > that it has been running rich. After many hours of adjusting and tweaking > > the carb I called Weber and they said that I need to knock down my fuel > > pressure. The mechanical fuel pump puts out aprox 5-6 psi and the carb > needs > > 2.5-3psi. All the parts stores that I have talked to say that there is > > nothing I can use to drop the pressure. I would think that there has to be > > some sort of regulator that will output a fixed or adjustable pressure > that > > I can put in the fuel line after the pump. If anyone knows of a part # or > > manufacture that I can get something to fix this I would be forever in > your > > debt. Thanks > > > > > > Scott > > 90YJ > > > > > > |
Re: Fuel pressure regulator??????
Also, if fuel is actually "leaking" past the float/needle valve and
"dripping" into the carb, check that out. It's the job of that assembly to enable/disable fuel flow keeping the fuel bowl topped up. So you can see where I'm going with this ... my thinking, the problem can in no way be caused by 5-6 psi fuel pressure. "bowgus" <Bowgus@rogers.com> wrote in message news:UBfUb.152910$ef.141084@twister01.bloor.is.net .cable.rogers.com... > For what it's worth ... the fuel pressure sounds ok to me (my V6 boat engine > spec is 3-7 psi). You need that pressure to supply sufficient fuel at > running speed. Might I suggest the carb may have been modified either for a > larger engine or by someone to run rich(er) ... meaning the primary > jets/metering rods (I'm a 4 bbl guy, excuse my ignorance here) may be > "oversize". > > "Foot Loose" <footloose61@ NOSPAM hotmail.com> wrote in message > news:40216b30_3@newspeer2.tds.net... > > I got a problem, I put a weber carb on my 256 awhile back and have noticed > > that it has been running rich. After many hours of adjusting and tweaking > > the carb I called Weber and they said that I need to knock down my fuel > > pressure. The mechanical fuel pump puts out aprox 5-6 psi and the carb > needs > > 2.5-3psi. All the parts stores that I have talked to say that there is > > nothing I can use to drop the pressure. I would think that there has to be > > some sort of regulator that will output a fixed or adjustable pressure > that > > I can put in the fuel line after the pump. If anyone knows of a part # or > > manufacture that I can get something to fix this I would be forever in > your > > debt. Thanks > > > > > > Scott > > 90YJ > > > > > > |
Re: Fuel pressure regulator??????
Also, if fuel is actually "leaking" past the float/needle valve and
"dripping" into the carb, check that out. It's the job of that assembly to enable/disable fuel flow keeping the fuel bowl topped up. So you can see where I'm going with this ... my thinking, the problem can in no way be caused by 5-6 psi fuel pressure. "bowgus" <Bowgus@rogers.com> wrote in message news:UBfUb.152910$ef.141084@twister01.bloor.is.net .cable.rogers.com... > For what it's worth ... the fuel pressure sounds ok to me (my V6 boat engine > spec is 3-7 psi). You need that pressure to supply sufficient fuel at > running speed. Might I suggest the carb may have been modified either for a > larger engine or by someone to run rich(er) ... meaning the primary > jets/metering rods (I'm a 4 bbl guy, excuse my ignorance here) may be > "oversize". > > "Foot Loose" <footloose61@ NOSPAM hotmail.com> wrote in message > news:40216b30_3@newspeer2.tds.net... > > I got a problem, I put a weber carb on my 256 awhile back and have noticed > > that it has been running rich. After many hours of adjusting and tweaking > > the carb I called Weber and they said that I need to knock down my fuel > > pressure. The mechanical fuel pump puts out aprox 5-6 psi and the carb > needs > > 2.5-3psi. All the parts stores that I have talked to say that there is > > nothing I can use to drop the pressure. I would think that there has to be > > some sort of regulator that will output a fixed or adjustable pressure > that > > I can put in the fuel line after the pump. If anyone knows of a part # or > > manufacture that I can get something to fix this I would be forever in > your > > debt. Thanks > > > > > > Scott > > 90YJ > > > > > > |
Re: Fuel pressure regulator??????
That would really surprise me, everything I can think of runs at
least seven pounds. New car injection at, at least forty pounds. I run an Edelbrock mechanical pump at fifteen pounds and my 850 Holley double pumper as no problems with it. However, I see in the Weber accessories, a regulator at: http://www.piercemanifolds.com/linkage.htm God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Foot Loose wrote: > > I got a problem, I put a weber carb on my 256 awhile back and have noticed > that it has been running rich. After many hours of adjusting and tweaking > the carb I called Weber and they said that I need to knock down my fuel > pressure. The mechanical fuel pump puts out aprox 5-6 psi and the carb needs > 2.5-3psi. All the parts stores that I have talked to say that there is > nothing I can use to drop the pressure. I would think that there has to be > some sort of regulator that will output a fixed or adjustable pressure that > I can put in the fuel line after the pump. If anyone knows of a part # or > manufacture that I can get something to fix this I would be forever in your > debt. Thanks > > Scott > 90YJ |
Re: Fuel pressure regulator??????
That would really surprise me, everything I can think of runs at
least seven pounds. New car injection at, at least forty pounds. I run an Edelbrock mechanical pump at fifteen pounds and my 850 Holley double pumper as no problems with it. However, I see in the Weber accessories, a regulator at: http://www.piercemanifolds.com/linkage.htm God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Foot Loose wrote: > > I got a problem, I put a weber carb on my 256 awhile back and have noticed > that it has been running rich. After many hours of adjusting and tweaking > the carb I called Weber and they said that I need to knock down my fuel > pressure. The mechanical fuel pump puts out aprox 5-6 psi and the carb needs > 2.5-3psi. All the parts stores that I have talked to say that there is > nothing I can use to drop the pressure. I would think that there has to be > some sort of regulator that will output a fixed or adjustable pressure that > I can put in the fuel line after the pump. If anyone knows of a part # or > manufacture that I can get something to fix this I would be forever in your > debt. Thanks > > Scott > 90YJ |
Re: Fuel pressure regulator??????
That would really surprise me, everything I can think of runs at
least seven pounds. New car injection at, at least forty pounds. I run an Edelbrock mechanical pump at fifteen pounds and my 850 Holley double pumper as no problems with it. However, I see in the Weber accessories, a regulator at: http://www.piercemanifolds.com/linkage.htm God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Foot Loose wrote: > > I got a problem, I put a weber carb on my 256 awhile back and have noticed > that it has been running rich. After many hours of adjusting and tweaking > the carb I called Weber and they said that I need to knock down my fuel > pressure. The mechanical fuel pump puts out aprox 5-6 psi and the carb needs > 2.5-3psi. All the parts stores that I have talked to say that there is > nothing I can use to drop the pressure. I would think that there has to be > some sort of regulator that will output a fixed or adjustable pressure that > I can put in the fuel line after the pump. If anyone knows of a part # or > manufacture that I can get something to fix this I would be forever in your > debt. Thanks > > Scott > 90YJ |
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