Oil pump problem
Thread Starter
|
Junior User
Joined: Sep 2012
Posts: 79
Likes: 0
From: Orange Park, Florida
Oil pump problem
I have a 1994 F150 300 strait 6. It needed a new oil pump. Was losing pressure and valves would rattle at random times.
I have replaced the pump. Everything is back together. Started it. No pressure. Pulled the distributor. Got a long 5/16 hex rod. Put it on a drill and run it for around 30 seconds. The drill loaded down so I assume I was pumping oil. No oil pressure on the gauge. Chalked that up to low speed on the drill. Hand drills only do a 100 or so rpm. So I put it all back together. Started the truck. Still no pressure on the gauge and valves rattle. I am lost. Any ideas?
I have replaced the pump. Everything is back together. Started it. No pressure. Pulled the distributor. Got a long 5/16 hex rod. Put it on a drill and run it for around 30 seconds. The drill loaded down so I assume I was pumping oil. No oil pressure on the gauge. Chalked that up to low speed on the drill. Hand drills only do a 100 or so rpm. So I put it all back together. Started the truck. Still no pressure on the gauge and valves rattle. I am lost. Any ideas?
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
I hope you installed a mechanical gauge and did not rely on the dash oil psi gauge. The dash gauge only registers @ 7 psi.
Now if I remember right, its CCW for rotation and you should see oil psi even at low rpms. Most prefer using hand drill for safety sake.
Let us know what the oil psi is when running.
Now if I remember right, its CCW for rotation and you should see oil psi even at low rpms. Most prefer using hand drill for safety sake.
Let us know what the oil psi is when running.
Thread Starter
|
Junior User
Joined: Sep 2012
Posts: 79
Likes: 0
From: Orange Park, Florida
I put a gauge on it, just to make sure I was getting a good reading. When I turn it with the drill I turn it ccw and it runs quick. I turn it cw and after a few seconds it loads up and the drill slows down. No matter which way I turn it no pressure. Is there some place I can physically see if there is oil flow?
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
Ok, if you remove the oil psi sender, and then you should see if the pump is pumping just by it shooting oil out the sender hole. Having a helper is nice if have one.
I changed mine out on my 300 years ago, so I couldnt remember CCW or CW.
I changed mine out on my 300 years ago, so I couldnt remember CCW or CW.
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
Did you check the pick up tube and screen for any blockage when you had it apart? There is a gasket that also goes between the block and the oil pump, perhaps it shifted when you installed the pump..
Thread Starter
|
Junior User
Joined: Sep 2012
Posts: 79
Likes: 0
From: Orange Park, Florida
We pulled the tube and screen. Soaked it in mineral spirits over night then took compressed air to clean everything. I am worried about the gasket shifting.
Trending Topics
Thread Starter
|
Junior User
Joined: Sep 2012
Posts: 79
Likes: 0
From: Orange Park, Florida
Wife reminded me that we glued the gasket on with rtv a day before we put the punp back in, so gasket moving is not the problem.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
88f150monster
1987 - 1996 F150 & Larger F-Series Trucks
2
Aug 9, 2011 11:36 AM