OEM fuel pump or aftermarket

[Blu-meanie]

My fuel pressure is running 5 lbs or less after changing the fuel filter. I doubt the filter caused it (sigh), unfortunately I didn't look at the pressure before doing the change. But, I was running 7.5 since the truck was new and the last time I drove it, that's where it was. I'm going to change the filter again, but I don't have much hope for that to solve anything. I see lots of different pumps for sale, anybody use one of the others? Geno's has Carters.

 

[AH64ID]

What load is it down to 5 psi on?

Any chance it’s got an air bubble by the sender?

 

[Blu-meanie]

What load is it down to 5 psi on?

Any chance it’s got an air bubble by the sender?

I bled the part from the filter to the isolater. I changed the filter again, now it's 6 psi. I'll take it for a walk tomorrow and see what happens. From the posts of failed pumps, many have failed a 75K. That's where I'm at.

 

[AH64ID]

Many also go several hundred thousand miles. The in tank pump is very reliable.

 

[cerberusiam]

From the posts of failed pumps, many have failed a 75K. That's where I'm at.

Not with an in-tank pump like that, actual failures are rare. I have 2 trucks with well over 300k on them pushing thru 2 filters. Changing LP with an in-tank pump is not as simple as popping a Carter pump on it.

What are you running for a gauge setup? Mechanical gauge with an isolator? Electronic sending unit on an isolator?

 

[Blu-meanie]

Not with an in-tank pump like that, actual failures are rare. I have 2 trucks with well over 300k on them pushing thru 2 filters. Changing LP with an in-tank pump is not as simple as popping a Carter pump on it.

What are you running for a gauge setup? Mechanical gauge with an isolator? Electronic sending unit on an isolator?

Mechanical with isolater. Bled from filter to isolater.

 

[HPSimpson]

Sounds like you will need to drop the fuel tank and that's not going to be fun, connections on fuel tank can be a pain, two straps hold tank on. Sounds simple to do I have done my '96 several times, due algae in tank.

 

[Blu-meanie]

Sounds like you will need to drop the fuel tank and that's not going to be fun, connections on fuel tank can be a pain, two straps hold tank on. Sounds simple to do I have done my '96 several times, due algae in tank.

Did that for the fuel vent modification. I'll be removing the bed this time. I still haven't heard from anybody as to the replacement pump. OEM or aftermarket.

 

[sojoe]

Did that for the fuel vent modification. I'll be removing the bed this time. I still haven't heard from anybody as to the replacement pump. OEM or aftermarket.

NOS IN TANK

 

[HPSimpson]

On my '96 it's still OEM unit submerge in fuel keeps ticking right along.

 

[White2005]

The OEM pump has been reliable for me.

 

[cerberusiam]

Mechanical with isolater. Bled from filter to isolater.

Replace the gauge with a newer electronic one before tackling an LP. The isolator gauges have a finite lifetime it seems.

Yes, an 05 will have an in-tank pump. OE has been good for most people. there are some OE replacements that are supposed to have better pressure at the CP-3.

 

[Blu-meanie]

Replace the gauge with a newer electronic one before tackling an LP. The isolator gauges have a finite lifetime it seems.

Yes, an 05 will have an in-tank pump. OE has been good for most people. there are some OE replacements that are supposed to have better pressure at the CP-3.

Well, you may trust an electronic gauge, but if it fails, what is it checked by? Mechanical.

 

[cerberusiam]

Well, you may trust an electronic gauge, but if it fails, what is it checked by? Mechanical.

...and running a mechanical fuel pressure in the cab is just asking for trouble without using an isolator and coolant. Either of those liquids will impact the gauge efficiency after a time. Frankly, the EV II gauges have been better than the EV I mechanicals in terms long term efficacy. Isolate the pressure sending unit with a grease gun hose and few problems are found.

The isolator gauge was a maintenance pig, always needed burped, and 2 gauges eventually leaked coolant which interfered with their readings. I would never trust that setup as an absolute measure without checking. Been there, done that.