Aftermarket fuel tank

[BigPoser]

Hold on.. You have a electric fuel pump on a 73? I think you REALLLLY need to explain your entire fuel system to us. Electric fuel pumps need a regulator as well as a return line usually.

If your truck is dying it could be vapor lock.

We were having a real problem getting fuel into the motor even with a new mech fuel pump and new lines. So we put in a nice Carter elec fuel pump and a bad ass filter. It is my understanding that you only need a regulator if you're running large horsepower. It may help it, but it's not needed.

 

[firebane]

We were having a real problem getting fuel into the motor even with a new mech fuel pump and new lines. So we put in a nice Carter elec fuel pump and a bad ass filter. It is my understanding that you only need a regulator if you're running large horsepower. It may help it, but it's not needed.

Regulators are needed NOT because of HP but because of carbs or throttle bodies requiring a specific amount of pressure. For example Quadrajets and Edelbrock do good with 5-6 PSI and anything more and you can cause over flooding.

So you install a regulator so excess fuel is passed back to a fuel tank and not into the carb or worse into the engine and polluting your oil.

Right now you could be over fueling your carb causing lots of issues.

Also if a mechanical fuel pump is NOT working properly then there are issues at hand that need fixing.. like

a) a bad fuel pump
b) fuel pump rod
c) camshaft
d) combination of b+c
e) combination of all the above.

Also lets not forget that we are dealing with 40 year old fuel hose which modern ethanol will turn to goo and rot away so fast so you have that to deal with as well.

 

[1low4x4]

Yeah....seems instead of fixing the original problem of fuel delivery y'all installed an electric pump with ni regulator...and now that doesn't even work so you wanna try a different gas tank.

If it were me, for what it's worth, I'd stick a mechanical pump back on it and diagnose the original problem first

 

[Georgeb]

Yeah....seems instead of fixing the original problem of fuel delivery y'all installed an electric pump with ni regulator...and now that doesn't even work so you wanna try a different gas tank.

If it were me, for what it's worth, I'd stick a mechanical pump back on it and diagnose the original problem first

2x
A different tank proably won't solve the problem.

 

[Georgeb]

What carb you running?

 

[BigPoser]

What carb you running?

It's an Edelbrock 1406 I believe.

 

[BigPoser]

Regulators are needed NOT because of HP but because of carbs or throttle bodies requiring a specific amount of pressure. For example Quadrajets and Edelbrock do good with 5-6 PSI and anything more and you can cause over flooding.

So you install a regulator so excess fuel is passed back to a fuel tank and not into the carb or worse into the engine and polluting your oil.

Right now you could be over fueling your carb causing lots of issues.

Also if a mechanical fuel pump is NOT working properly then there are issues at hand that need fixing.. like

a) a bad fuel pump
b) fuel pump rod
c) camshaft
d) combination of b+c
e) combination of all the above.

Also lets not forget that we are dealing with 40 year old fuel hose which modern ethanol will turn to goo and rot away so fast so you have that to deal with as well.

Okay, so what regulator should I put in and where exactly does it go? I'll get one today. I need to get this sorted quickly. Thanks for the help guys.

Brandon