Base oil pressure issue?
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Tuned
Joined: Oct 2021
Posts: 478
Likes: 194
Base oil pressure issue?
Truck starts every time in 2-3 seconds but it seems that to get my oil gauge (dummy switch) to move it happens after 5 seconds. Kinda don’t like the engine running and the oil gauge at 0 for a second or two.
Could this be an oil drain back issue? Running a motorcraft filter and cap. LPOP is new with the recent rebuild. No other mechanical issues that I Know of.
Could this be an oil drain back issue? Running a motorcraft filter and cap. LPOP is new with the recent rebuild. No other mechanical issues that I Know of.
Cargo Master
Joined: Oct 2018
Posts: 2,808
Likes: 1,895
From: unfortunately Germany
Drain back valve in the oil filter housing.
Push the drain back valve down with a long object and run the starter (fender cable). Note the time till the housing is full and repeat the test with a new valve.
Push the drain back valve down with a long object and run the starter (fender cable). Note the time till the housing is full and repeat the test with a new valve.
Thread Starter
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Tuned
Joined: Oct 2021
Posts: 478
Likes: 194
Thread Starter
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Tuned
Joined: Oct 2021
Posts: 478
Likes: 194
interesting thanks for proving that information. Maybe it’s normal? Going to test mine again this morning and upload to YouTube.
More Turbo
Joined: Dec 2012
Posts: 538
Likes: 151
From: Warsaw KY
If you film it you can get a stopwatch on it. It might beat my 1,000+1/1,000+2 method of counting.
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Tuned
Joined: Oct 2021
Posts: 478
Likes: 194
it seems that the oil filter maybe draining back?
hopefully not hurting the motor. Going to have to figure out if it’s the anti drain back valve or the oil filter drain valve
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More Turbo
Joined: Dec 2012
Posts: 538
Likes: 151
From: Warsaw KY
That looks very much like mine. Maybe we both have a problem. Would be nice to get a bigger sampling of starts.
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Thread Starter
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Tuned
Joined: Oct 2021
Posts: 478
Likes: 194
I agree. I can’t remember how it was before the rebuild I did. Never really paid attention. I ordered an $8 oil filter drain valve so ill start there. When I did the rebuild it got a new anti drain back valve and oil cooler bypass valve so im fairly confident it’s not those brass valves. When I first got the truck the previous 1 owner had a WiX filter installed and maybe just maybe the aftermarket filters broke the valve and I never noticed.
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Tuned
Joined: Oct 2021
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My main concern is in the second video the gauge responds almost immediately. I had the key on for a number of seconds before cranking so I assume that everything is awake. Do you have any videos showing the gauge response im genuinely curious now
Fleet Mechanic
Joined: Sep 2006
Posts: 1,491
Likes: 295
From: Fresno, CA
Both of my trucks behave very similar to your videos. Overnight start it takes a few seconds, restarts are almost instantaneous. Curious your results with a new valve, might turn out to be a wear item? Or might be something else like the LPOP regulator valve leaking by?
Thread Starter
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Tuned
Joined: Oct 2021
Posts: 478
Likes: 194
Both of my trucks behave very similar to your videos. Overnight start it takes a few seconds, restarts are almost instantaneous. Curious your results with a new valve, might turn out to be a wear item? Or might be something else like the LPOP regulator valve leaking by?
