Lower than normal Fuel PSI
#1
Lower than normal Fuel PSI
I noticed a few days back my fuel PSI was around 54 at idle. This morning it stayed below 58. Cruising, I'll see around 52-56, and heavier throttle will drop the PSI way down, into the mid-40's.
Those numbers are low, correct?
When I first completed the tank mods, I would see 59 psi at idle.
Current fuel set up;
STOCK tune (waiting for my chip to return from PHP)
Hutch/Harpoon
Baldwin BF1212 pre-pump filter (8k miles / 9 months old)
Factory style bowl filter (around 12k miles old)
Where should I start? Filters? Both?
Maybe I should ask another question... What's the recommended 1212 pre-pump filter change-interval? Am I over due? (I hate missing maintenance cycles )
Those numbers are low, correct?
When I first completed the tank mods, I would see 59 psi at idle.
Current fuel set up;
STOCK tune (waiting for my chip to return from PHP)
Hutch/Harpoon
Baldwin BF1212 pre-pump filter (8k miles / 9 months old)
Factory style bowl filter (around 12k miles old)
Where should I start? Filters? Both?
Maybe I should ask another question... What's the recommended 1212 pre-pump filter change-interval? Am I over due? (I hate missing maintenance cycles )
#3
I did my hutch and harpoon back in November, around 6k mi ago. I use the bf1173 as a pre pump filter and changed it last week. (I'm also getting a drop in fuel pressure under med. to heavy acceleration) Well when I changed the filter I opened the old one up to inspect and it was very clean. It could have gone two to three times longer I think.
#4
#6
After some drive time with the clean BF1212, I'm seeing 58-59 at idle, and 49-50 under heavy pedal.
Yup, double hose clamps on the pump inlet and the tank outlet. I used the supplied clamp-less push-on barbed fittings for the filter base that came with the Strictly kit.
Yup, double hose clamps on the pump inlet and the tank outlet. I used the supplied clamp-less push-on barbed fittings for the filter base that came with the Strictly kit.
#7
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#10
...I just hope he doesn't have a copyright on "buckzooka".
#12
One other thing to review is the intake to the pump. You can always disconnect the outlet of the pump and pull the fuel strainer to allow blowing air backwards through the pump. Have a paper towel where the air blows out of the fuel line to see if the pump's blowin' chunks.
Your fuel filter can be "expired". I always use the Motorcraft fuel filter, because it has a layer designed to deal with water in fuel. If you have one of those fancy-schmancy water separators or spin-on filters before the pump (like I used to)... well THERE'S your problem. You want nothing more than a diesel rated strainer before the pump... at least when you're dealing with 160/100 on a stock pump.
Stinky gets as low as 45 PSI on rare occasions, but a typical WOT run stays above 50 PSI. As you know, things happen so fast, you barely have time to get a reading on a gauge before you have to get out of it. All my gauges have alarms, so I know when I exceed any of my limits. 45 PSI on the fuel is still OK, but that's crowding it. 10 PSI? That can hurt your injectors... you'll want to stop doing that.
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RigCity
1999 - 2003 7.3L Power Stroke Diesel
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02-22-2019 09:01 PM