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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 04-14-2004, 10:51 AM
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coolsystems coolsystems is offline
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replace oil pump on 87 F150 w/302

can I replace the oil pump on a 1987 F-150,with 302 engine while the engine is in the truck?Have low oil pressure,& am thinking about trying a new high voluime pump to see if it helps.
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Old 04-15-2004, 01:09 AM
Superdave Superdave is offline
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Quote:
Originally Posted by coolsystems
can I replace the oil pump on a 1987 F-150,with 302 engine while the engine is in the truck?Have low oil pressure,& am thinking about trying a new high voluime pump to see if it helps.

If the engine has not been touched in your 87 truck. More than likely the rod and main bearings are worn and causing your low oil pressure problem. The new pump may just be a bandaid.

Of course you should check the oil pressure with a manual gauge first to verify the low readings.
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Old 04-15-2004, 08:29 AM
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coolsystems coolsystems is offline
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OK,then if I have to replace the rod & main bearings,can I do it while the engine is in the truck?or will I have to pull it?
(I will check with a manual guage today,but I now believe they need to be replaced,because I get a slight nock when I first start it up for a few seconds)

Thanks
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Old 04-16-2004, 03:43 PM
Superdave Superdave is offline
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You can do it in the truck. I never have, I always just pull the engine.

Its just way easier to work on like that.

But I have an engine hoist, a garage, an engine stand. I realize a lot of people don't have those things. I didn't either at one time.

Good luck
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Old 04-16-2004, 04:57 PM
F150Conno F150Conno is offline
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I have a 92 f150 5.0 4wd and am in the middle of replacing the oil pump with the engine in the vehicle. You have to remove the exhaust and starter motor, loosen the motor mounts and jack up the engine as high as it will go. Then unbolt the oil pan, but you probably wont be able to completely remove it, you have to move it around to get to the pump and pick up tube. Its doable but a real pain in the a**. I'm using studs in place of the bolts for the pump to help guide it in place. Dont forget to prime the pump. See the tech article in this site on replacing the oil pan gasket with the engine in the vehicle, it was helpful.
Good luck.
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Old 04-16-2004, 05:14 PM
Tucson150 Tucson150 is offline
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I also had low oil pressure and decided to put in a nice Melling high-flow pump. I read and re-read the steps in the shop manual, but didn't realize just how high you have to raise the engine. You really need about 10 inches to first unbolt the pan, then stuff your arms into the crack between pan and case to get to the oil pump and feed tube bolts. I also was not informed that the steering pump hose would rip the hose connection right off the steering pump reservoir if you don't drain and disconnect it before the raise. I barely got the pan out from between the cranked up engine and crankcase, and still am not 100% confindent that I got the pump and line bolts tight enough on reinstalling them. What a pain! Finally, I really screwed up when I couldn't find a convenient jack point to raise the engine and bent the heck out of the harmonic balancer (crank pulley). The high-flow pump works great, but I wound up putting in a new power steering pump and balancer. I would rather have the two weekends back and have paid the $300-$400 to have a shop replace the pump.
Good luck if you decide to do it.
Tim
'87 F150 x-cab w/302 E4OD
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Old 04-16-2004, 05:14 PM
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