Fuel pump
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Elder User
Joined: Dec 2000
Posts: 808
Likes: 3
Fuel pump
Hi all,
Well, I was cruising down the highway @70MPH and notice the fuel pressure gauge dropped down to 50 then back to 65. Kept watching the gauge and it would swing back and forth from 55 to 65.
Got off the highway. Nailed it at the light and watched the gauge drop to 53 and swing back to 65. Fuel pressure is not steady either. It swings back and forth from 52 to 65.
Thinking the pump is on its her last legs?
Any suggestions on a replacement pump or other options. Truck got 194K on her.
Thx, in advance.
Well, I was cruising down the highway @70MPH and notice the fuel pressure gauge dropped down to 50 then back to 65. Kept watching the gauge and it would swing back and forth from 55 to 65.
Got off the highway. Nailed it at the light and watched the gauge drop to 53 and swing back to 65. Fuel pressure is not steady either. It swings back and forth from 52 to 65.
Thinking the pump is on its her last legs?
Any suggestions on a replacement pump or other options. Truck got 194K on her.
Thx, in advance.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Hi all,
Well, I was cruising down the highway @70MPH and notice the fuel pressure gauge dropped down to 50 then back to 65. Kept watching the gauge and it would swing back and forth from 55 to 65.
Got off the highway. Nailed it at the light and watched the gauge drop to 53 and swing back to 65. Fuel pressure is not steady either. It swings back and forth from 52 to 65.
Thinking the pump is on its her last legs?
Any suggestions on a replacement pump or other options. Truck got 194K on her.
Thx, in advance.
Well, I was cruising down the highway @70MPH and notice the fuel pressure gauge dropped down to 50 then back to 65. Kept watching the gauge and it would swing back and forth from 55 to 65.
Got off the highway. Nailed it at the light and watched the gauge drop to 53 and swing back to 65. Fuel pressure is not steady either. It swings back and forth from 52 to 65.
Thinking the pump is on its her last legs?
Any suggestions on a replacement pump or other options. Truck got 194K on her.
Thx, in advance.
How full was the tank? If the level was down you might make a tool for checking
for aeration of the fuel.
Here is a tool I made to check pressure with. It has an orifice to simulate WTO
so that you don't have to do that.
Here is my tool. You can do static pressure and dynamic pressure.
When you open the valve to get the dynamic pressure you can watch the hose
to see if there is any bubbles in the line. That line can go right back to the tank
by just sticking the end into the filler or you can just a fuel can.
The orifice I had to order from the local Parker dealer and took about a week to
get it in. I got the idea from a post here in the forum some time ago.
Sean <BR>
6.0L Tech Folder
Thread Starter
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Elder User
Joined: Dec 2000
Posts: 808
Likes: 3
Fuel pump
Thanks for the reply Sean.
Didn't think about my filters. They both need changing. Haven't changed them since my trip to Canada in June or 7500 miles ago.
Like your setup there.
I'll do something similar.
Thanks again
Didn't think about my filters. They both need changing. Haven't changed them since my trip to Canada in June or 7500 miles ago.
Like your setup there.
I'll do something similar.
Thanks again
Thread Starter
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Elder User
Joined: Dec 2000
Posts: 808
Likes: 3
Time for the fall maintenance before winter sets in.
Thanks.
Laughing Gas
Joined: Jan 2007
Posts: 883
Likes: 5
If elec gauge sender may be on its way out, after cking filters ck blue spring for anything hung in area,then ck pump water drain for signs of rust or gum deposits,if there you need to clean the pump,look for any signs of seapege around any suction fittings from tank to pump. Have someone sit in truck after run awhile and turn key on while you under truck listening to sound while they cycle key,listen for changes in pumps sound from fast to slow,if changes alot pumps on its way out when it runs awhile and heats up.
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