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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 03-16-2011, 11:00 PM
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lamenytro lamenytro is offline
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Ford1337 LameNytro
how hard is it to take out an oil pump?

hey, so my oil pump is really beginning to make me really mad, i was thinking of taking it out and cleaning it out and get some fresh oil in it. i was hoping on doing it Friday but not sure on how long or hard it is. my dad said that hes done it before on our old '88 f150 but that was a while ago. my truck is a 1990 f150 with a 5.8 and any advise will be greatly appreciated

Tyler
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1990 f150 4x4 XLT Lariat 5.8L 351c.i.d "big sexy"
http://www.youtube.com/watch?v=CZSkz9gKtN4
1976 f100 explorer edition 5.0 302c.i.d "ole' orange"
http://www.youtube.com/watch?v=k8Ytk...el_video_title
1948 dodge b1d 230ci flat 6 "damned dodge"
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Old 03-16-2011, 11:14 PM
drjoe171 drjoe171 is offline
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What kinda mad?

Did you happen to put a real gauge on it?
Is then engine rattling or is the oil pressure needle just jumping around?

If do a search on something like,

'oil pan removal', you'll find some good info.
Might have to loosen a motor mount or jack up one side
or the other of the engine.

I haven't done one lately but lots of people on here have.

Just realized you're in Vict!

My daughter just moved there a week ago.
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Old 03-16-2011, 11:23 PM
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Ford1337 LameNytro
im the kinda mad that you get when you cant really go for a long drive because its low lol

the gauge is always low but when i idle the truck shutters and shakes and wants to stall

and i always forget that theres a search option lol

Tyler
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1990 f150 4x4 XLT Lariat 5.8L 351c.i.d "big sexy"
http://www.youtube.com/watch?v=CZSkz9gKtN4
1976 f100 explorer edition 5.0 302c.i.d "ole' orange"
http://www.youtube.com/watch?v=k8Ytk...el_video_title
1948 dodge b1d 230ci flat 6 "damned dodge"
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Old 03-16-2011, 11:38 PM
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why would you want to clean it and there is always fresh oil going through it ? to pull the pump you have to pull the pan and to do that you will have to undo the motor mounts and jack the engine up ! IF YOU PULL THE PUMP THEN THROW IT AWAY AND GET A NEW ONE !
IF THE STRAINER IS PLUGGED THEN CLEAN IT OR GET A NEW ONE , NEVER PULL A PUMP AND REUSE IT AS THERE IS A REASON FOR PULLING IT AND PUTTING IT BACK IN WONT FIX IT !
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Old 03-17-2011, 12:49 AM
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i was actually thinking of getting a new one, been looking at summit after i posted this and might buy this one Summit Racing SES-5-60-08-008 - Summit Racing Street & Strip® Oil Pump and Pickup Kits - Overview - SummitRacing.com but it doesnt come with a spring, could i use the one in the old one or what?

Tyler
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1990 f150 4x4 XLT Lariat 5.8L 351c.i.d "big sexy"
http://www.youtube.com/watch?v=CZSkz9gKtN4
1976 f100 explorer edition 5.0 302c.i.d "ole' orange"
http://www.youtube.com/watch?v=k8Ytk...el_video_title
1948 dodge b1d 230ci flat 6 "damned dodge"
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Old 03-17-2011, 04:08 AM
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here is a high volume pump from autozone , and the spring that your referring to is for high pressure witch you dont need as the pump works just fine as is ! i would never use a used spring in a new pump , your currant pick up tube will work with this pump just clean it up good !

Melling/Oil Pump

For your 1990 Ford Truck F150 1/2 ton P/U 4WD 5.8L FI Windsor 8cyl
Price:
$39.99


Eligible for FREE 2-Day Shipping
learn more
Part Number: M-83HV
Alternate Part Number: 50123
AVAILABILITY:
STORE PICK UP
SPECIAL ORDER
Visit your local store to special order.
SHIP TO HOME
AVAILABLE
Ships within 2 business days.
Add To Cart

Features & Benefits
High volume replacement oil pump
Part Number: M-83HV
Weight: 5.7 lbs
Warranty: 1 YR
Notes: High volumeIt has 25% additional volume of oil than stock pump, stock relief valve and shaft design, may require minor modification of oil pan. Priced individually.
Material: Cast Iron
Quantity: 1
Shipping Information: Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses.
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Old 03-17-2011, 09:47 AM
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To change it you have to disconnect both motor mounts and jack the engine up until the intake hits the firewall. You will then have to unbolt the oil pan and before you can get it out you have to reach in it blindly and unbolt the pump (or pick up tube, I can't remember) and drop it in the pan and then you will be able to remove the pan. Not the hardest job to do but it will take some patience.
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Old 03-17-2011, 10:46 AM
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Mike is right... it flat out sucks!

You'll have to release the engine mounts and push it up (pull if you have a cherry picker). In order to have clearance for the pan to come out. there will be 3 bolts you need to take out. One of them holds the end of the screen in and two of them will hold the pump in.

When I did my buddy's 351w we did the clutch and new injectors in the same weekend. Taking out the tranny for a inspection and replacing the clutch was a great idea because it allowed us a ton more room. We removed the fan and fan clutch and pulled the engine way up and out with a cherry picker. This allowed the pan to drop out without the oil pump and screen off. Just a min... I'll post a pic that should help you locate the bolts without the pan off.
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Zeus 89 F250 ZF 4x4 351w 143K- tow rig project
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Old 03-17-2011, 10:54 AM
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In the pic below you'll see a 351w with oil pan off. The red arrows to the right show the pump bolts (2 of them) and the green arrow shows you the last nut to remove the oil screen. The green circle is there to show you where the nut will be on the other side. The nut you need to remove isn't pictured in the circle, but it will be right on the end of that main cap bolt.
Click the image to open in full size.
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Thumper 88 F250 ZF 4x4 4.9L 3G 238K-main work horse
Zeus 89 F250 ZF 4x4 351w 143K- tow rig project
Ol' Girl 83 F150 NP208 300 T18 358K Offy DP 4bbl Holley

Did I say somthing GOOD? Click MY HEART!
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Old 03-17-2011, 11:03 AM
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the oil pump drive shafts are known to break sometimes so you might want to spend the $$$$ to replace that. Just remember to set the depth guage ring on the new pump shaft (if you get one). It's the same as the one you take out. If you don't set the depth guage ring properly and you remove your distributor later... Your distributor might pick the pump shaft up upon removal and drop it into the bottom of the oil pan. MAJOR NO NO!!!!! AKA the death plunk!
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Thumper 88 F250 ZF 4x4 4.9L 3G 238K-main work horse
Zeus 89 F250 ZF 4x4 351w 143K- tow rig project
Ol' Girl 83 F150 NP208 300 T18 358K Offy DP 4bbl Holley

Did I say somthing GOOD? Click MY HEART!
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Old 03-17-2011, 12:38 PM
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It sounds to me like you need to stop, take a step back, and figure out what's wrong with your truck before you start changing parts. To be honest, from your vague description of the symptoms, you're wasting your time and money with the oil pump. And don't use a high volume pump unless the motor is built for it. Too-high oil pressure can blow gaskets out and cause lots of problems.

So... how many miles on the truck? What is the actual oil pressure? The gauge is just an idiot light. More than 7psi and it swings about halfway up. Less than 7psi, it reads zero. There is no in between. Any other readings are electrical related and have nothing to do with oil pressure.

How long has it been doing this? Any recent work done to it? Have you pulled the codes? When was the last tune-up?
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Old 03-17-2011, 12:49 PM
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Tyler,
I think you need to take this one thing at a time too. I know you were asking about the real oil pressure guage in another forum. You should start with doing the Real oil pressure guage... Go back to the post I revived today and read through what you need to do then get back to us.
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Thumper 88 F250 ZF 4x4 4.9L 3G 238K-main work horse
Zeus 89 F250 ZF 4x4 351w 143K- tow rig project
Ol' Girl 83 F150 NP208 300 T18 358K Offy DP 4bbl Holley

Did I say somthing GOOD? Click MY HEART!
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Old 03-17-2011, 04:13 PM
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Ford1337 LameNytro
i was rethinking everything last night and im probably going to put in the reeal OP gauge and if its still low ill do the pump
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1990 f150 4x4 XLT Lariat 5.8L 351c.i.d "big sexy"
http://www.youtube.com/watch?v=CZSkz9gKtN4
1976 f100 explorer edition 5.0 302c.i.d "ole' orange"
http://www.youtube.com/watch?v=k8Ytk...el_video_title
1948 dodge b1d 230ci flat 6 "damned dodge"
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Old 03-17-2011, 11:00 PM
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If the bearings are shot a new oil pump is a waste of time.
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Old 03-18-2011, 04:51 PM
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x2...

you should check and get your real oil pressure first. Then if you are still low on oil pressure it could be your main berings... So the next step would be actually checking the berings before spending $100 on a new oil pump, screen, and pan gasket.

You need to drop the pan in order to check your berings anyhow... So... push/pull your motor up and drop your pan off. Then take the oil pump and screen off. Then pull a couple of the main caps in order to inspect the mains. If the mains are bad you'll need to do new mains before a new oil pump will make any difference. If the mains are fine you can bolt them up, torque them down to speck, and install a new pump, screen and one piece pan gasket (the one pieces are crutiual- felpros are great!).

PS: if you don't want to mess with all the parts for a real oil pressure guage in the cab... One of these oil pressure testers is $15 and can be found about anywhere! It will also give you a more accurate reading than the guage in the cab (before or after the real pressure switch swap) b/c it actually reads by PSI numbers and not low-normal- high...
Amazon.com: Engine Oil Pressure Tester: Automotive
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Thumper 88 F250 ZF 4x4 4.9L 3G 238K-main work horse
Zeus 89 F250 ZF 4x4 351w 143K- tow rig project
Ol' Girl 83 F150 NP208 300 T18 358K Offy DP 4bbl Holley

Did I say somthing GOOD? Click MY HEART!
Nathan - FTE Iowa Chapter
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Old 03-18-2011, 04:51 PM
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