ENGINE OIL NOT FLOWING
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From: TEMPE UNITED STATES
ENGINE OIL NOT FLOWING
[updated:LAST EDITED ON 02-Dec-02 AT 06:42 PM (EST)]
I'm pretty much at my witts end and need some quality input here. I received a '91 van w/ a 351w that was shot out (need of rebuild). stripped it out and sent it to the machine shop where it was tanked, milled, bored, and returned w/ parts kit.
New everything; pump primed & reinstalled. Starts and runs but the excessive lifter chatter that did not silence told me there was a problem. Removed the sending unit for oil pressure gauge and installed a gauge which said that the pump is not putting out. removed the gauge from the end of the line and visually confirmed little movement (but some) of the fluid.
We busted the motor loose again and removed the pan and pump only to find that when tested the pump seems to have more than enough potential to do the job.
I am really at my limits here!!! Have I missed something? Is there an obstruction in the ports somewhere? What is really going on, I have never heard of such a thing.
THANKS FOR THE FEED BACK.
I'm pretty much at my witts end and need some quality input here. I received a '91 van w/ a 351w that was shot out (need of rebuild). stripped it out and sent it to the machine shop where it was tanked, milled, bored, and returned w/ parts kit.
New everything; pump primed & reinstalled. Starts and runs but the excessive lifter chatter that did not silence told me there was a problem. Removed the sending unit for oil pressure gauge and installed a gauge which said that the pump is not putting out. removed the gauge from the end of the line and visually confirmed little movement (but some) of the fluid.
We busted the motor loose again and removed the pan and pump only to find that when tested the pump seems to have more than enough potential to do the job.
I am really at my limits here!!! Have I missed something? Is there an obstruction in the ports somewhere? What is really going on, I have never heard of such a thing.
THANKS FOR THE FEED BACK.
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From: TEMPE UNITED STATES
ENGINE OIL NOT FLOWING
[updated:LAST EDITED ON 02-Dec-02 AT 06:44 PM (EST)]I'm pretty much at my witts end and need some quality input here. I received a 91 van w/ a 351w that was shot out (need of rebuild). stripped it out and sent it to the machine shop where it was tanked, milled, bored, and returned w/ parts kit.
New everything; pump primed & reinstalled. Starts and runs but the excessive lifter chatter that did not silence told me there was a problem. Removed the sending unit for oil pressure gauge and installed a gauge which said that the pump is not putting out. removed the gauge from the end of the line and visually confirmed little movement (but some) of the fluid.
We busted the motor loose again and removed the pan and pump only to find that when tested the pump seems to have more than enough potential to do the job.
I am really at my limits here!!! Have I missed something? Is there an obstruction in the ports somewhere? What is really going on, I have never heard of such a thing.
THANKS.
New everything; pump primed & reinstalled. Starts and runs but the excessive lifter chatter that did not silence told me there was a problem. Removed the sending unit for oil pressure gauge and installed a gauge which said that the pump is not putting out. removed the gauge from the end of the line and visually confirmed little movement (but some) of the fluid.
We busted the motor loose again and removed the pan and pump only to find that when tested the pump seems to have more than enough potential to do the job.
I am really at my limits here!!! Have I missed something? Is there an obstruction in the ports somewhere? What is really going on, I have never heard of such a thing.
THANKS.
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ENGINE OIL NOT FLOWING
make sure the oil pump pick up tube is tight and not sucking air, and make sure the screen in the pick up isnt clogged. if all that is ok, i am guessing that the machine shop may have not reinstalled an oil gallery plug. they usually take the gallery plugs out when they hot tank a block, to get all the crud out. but first, i would check the pick up, and re prime the pump with some vaseline and try it again.
eden
eden
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Joined: Jan 2002
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From: LeClaire IA
ENGINE OIL NOT FLOWING
and just from personal experiance make sure you are turning the shaft the proper direction i used my cordless drill and a 1/4 socket on 1/4 drive extension i also had my elec all hooked up so i turned the key on and had my boss watch the oil pressure gauge to verify that the system was indeed primed
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From: So Cal
ENGINE OIL NOT FLOWING
A long shot and really a last resort...
are all the bearings in properly? Most bearings(Cam, Rod and mains) have oil holes. If you have them in the wrong way or not centered(thus blocking an oil journal) you will not get any or not much pressure. A real PITA to fix but easy to do, but at least you won't have to tear the engine down all the way, just 70%, joy.
before going this far I would make sure the pump is truly pumping oil into the main oil galleries. I think most pumps have some plug that can be pulled and oil should squirt out of that when the pump is turned.
Good Luck, Hope I am wrong,
Jim Henderson
are all the bearings in properly? Most bearings(Cam, Rod and mains) have oil holes. If you have them in the wrong way or not centered(thus blocking an oil journal) you will not get any or not much pressure. A real PITA to fix but easy to do, but at least you won't have to tear the engine down all the way, just 70%, joy.
before going this far I would make sure the pump is truly pumping oil into the main oil galleries. I think most pumps have some plug that can be pulled and oil should squirt out of that when the pump is turned.
Good Luck, Hope I am wrong,
Jim Henderson
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From: TEMPE UNITED STATES
ENGINE OIL NOT FLOWING
>make sure the oil pump pick up tube is tight and not sucking
>air, and make sure the screen in the pick up isnt clogged.
>if all that is ok, i am guessing that the machine shop may
>have not reinstalled an oil gallery plug. they usually take
>the gallery plugs out when they hot tank a block, to get all
>the crud out. but first, i would check the pick up, and re
>prime the pump with some vaseline and try it again.
>
>eden
THANKS EDEN,
yea, I did go through all of the A-B-C's. but to no avail!
the only "plugs" that i can think of would be the ones on the back of the block, right? Well. that being the case then it would definately tell on it's self because the oil would be pouring out the back of the block (which is not happening). Unless of course, you know of some plugs within the block that I have never noticed. (keep in mind that i am not a "ford man")
>air, and make sure the screen in the pick up isnt clogged.
>if all that is ok, i am guessing that the machine shop may
>have not reinstalled an oil gallery plug. they usually take
>the gallery plugs out when they hot tank a block, to get all
>the crud out. but first, i would check the pick up, and re
>prime the pump with some vaseline and try it again.
>
>eden
THANKS EDEN,
yea, I did go through all of the A-B-C's. but to no avail!
the only "plugs" that i can think of would be the ones on the back of the block, right? Well. that being the case then it would definately tell on it's self because the oil would be pouring out the back of the block (which is not happening). Unless of course, you know of some plugs within the block that I have never noticed. (keep in mind that i am not a "ford man")
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From: TEMPE UNITED STATES
ENGINE OIL NOT FLOWING
mike,
not that lucky to be that easy - that shaft is in great condition, (so is the distributor and pump connections. but thanks.
not that lucky to be that easy - that shaft is in great condition, (so is the distributor and pump connections. but thanks.
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ENGINE OIL NOT FLOWING
If this is a 351W, then you also have 3 oil gallery plugs behind the timing gear. There is also one in the lifter valley area, which you can't get to unless you pull the intake manifold. It is at the back of the motor. Maybe one of these popped out or they weren't installed after the block was cleaned out.
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From: TEMPE UNITED STATES
ENGINE OIL NOT FLOWING
slave
definately turning the right way. if it weren't i would not have been able to witness the small amount of posative movement that i did.
AT THIS POINT THE PUMP IS DEFINATELY SUSPECT. Though I had broke it down and lubed it and primed it and installed it and turned that bugger manually to confirm oil at the filter- then the port for sending unit. Still the oil barely creeps up the line to barely reach the gauge let alone be able to register any pressure. Each time i stop it seems as though the pump looses it's prime and tries to cavitate, the way that it shot out of the "filter" and "sending unit" ports it should be flying up and out of that piece of gauge tubeing.
What i really want at this point is a diagram of the ford 351w oil ports. I will know in the am if it is the oil pump or not, at which point i will need that diagram. any clue where i can look on the net to see this diagram. (it is either a bad pump or an "open" inside the block that is allowing the oil to free flow back into the pan and not build any pressure.)
definately turning the right way. if it weren't i would not have been able to witness the small amount of posative movement that i did.
AT THIS POINT THE PUMP IS DEFINATELY SUSPECT. Though I had broke it down and lubed it and primed it and installed it and turned that bugger manually to confirm oil at the filter- then the port for sending unit. Still the oil barely creeps up the line to barely reach the gauge let alone be able to register any pressure. Each time i stop it seems as though the pump looses it's prime and tries to cavitate, the way that it shot out of the "filter" and "sending unit" ports it should be flying up and out of that piece of gauge tubeing.
What i really want at this point is a diagram of the ford 351w oil ports. I will know in the am if it is the oil pump or not, at which point i will need that diagram. any clue where i can look on the net to see this diagram. (it is either a bad pump or an "open" inside the block that is allowing the oil to free flow back into the pan and not build any pressure.)
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From: TEMPE UNITED STATES
ENGINE OIL NOT FLOWING
4x4,
you just confirmed what i had responded to "slave" about. I fear that oyu are right, i can not recall seeing on in the valley. CRUD! here we go w/ the exploritory opperation. thanks!
you just confirmed what i had responded to "slave" about. I fear that oyu are right, i can not recall seeing on in the valley. CRUD! here we go w/ the exploritory opperation. thanks!
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From: TEMPE UNITED STATES
ENGINE OIL NOT FLOWING
:-X12
HEY GUYS,
I JUST WANTED TO THANK ALL OF YOU FOR YOUR INPUT INTO THIS DELEMA.
YOUV'E BEEN A GREAT HELP.
HOPE YOU ALL HAVE THE GREATEST CHRIST-MAS EVER.
BLESSINGS TO ALL.
HEY GUYS,
I JUST WANTED TO THANK ALL OF YOU FOR YOUR INPUT INTO THIS DELEMA.
YOUV'E BEEN A GREAT HELP.
HOPE YOU ALL HAVE THE GREATEST CHRIST-MAS EVER.
BLESSINGS TO ALL.
