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Old 04-11-2004, 06:32 PM   #1
White 2.5rs
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Default oil is not priming?

ok engines back in most of the stuff is hooked up
i pulled the fuel pump connector off and started cranking, no oil is being pumped, the pan is full, i even put oil into the turbo feed line and into the pressure sensor, and im talkin quarter quart down the pressure hole, filled filter w/ oil

*** is going on?


thanks
alex
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Old 04-11-2004, 07:23 PM   #2
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hmm, does it sound like the engine has compression? does it crank evenly, or just real fast?

IF there is no oil, the piston rings cannot seat, and due to no lubrication, thus keeping it from running. You also have to remember that very little oil comes out of the oil tap.

Is the turbo currently hooked up? Are you tapping your oil at the service plug on top of the block? are you sure you remembered the keyway on the under drive pully? If you didnt, put it in, the gear for the oil pump will not spin.

These are the things to start checking, go from there. If you are really concerned that you dont have oil pressure, DO NOT RUN YOUR ENGINE, as im sure you know. You will spin a bearing, break piston rings, score the cylinder walls, etc.

-Jake
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Old 04-11-2004, 07:46 PM   #3
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it had compression just fine, i then pulled the plugs

the turbo isnt hooked up, i have the feed line kinda shoved into the return line, and im using that to check for flow

i really dont have any idea

plz help
thanks
alex


on that key thing for the crank, the oil pump sits on that crank so that the key doesnt matter, atleast mine does, the key only matters for aux devices, ac, etc
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Old 04-11-2004, 07:56 PM   #4
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Quote:
Originally posted by White 2.5rs
it had compression just fine, i then pulled the plugs

the turbo isnt hooked up, i have the feed line kinda shoved into the return line, and im using that to check for flow

i really dont have any idea

plz help
thanks
alex


on that key thing for the crank, the oil pump sits on that crank so that the key doesnt matter, atleast mine does, the key only matters for aux devices, ac, etc
he's not talking about THAT key, he means the key that goes on the crankshaft of the motor, its a little half moon shaped piece that slides into a notch on the crank.... But Im forgetting if there is one for the oil pump?....
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Old 04-11-2004, 07:57 PM   #5
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i dont think there is, the sides of the pump are flat and it only goes on one way, well, 2, what i mean is that it sits over a circular rod <the crank shaft> with 2 flats made on opposite sides of it...so i dont see how i would need a key for it
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Old 04-11-2004, 10:25 PM   #6
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bump

hoping to have this figured out tomorrow
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Old 04-11-2004, 11:14 PM   #7
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Quote:
Originally posted by White 2.5rs
i dont think there is, the sides of the pump are flat and it only goes on one way, well, 2, what i mean is that it sits over a circular rod <the crank shaft> with 2 flats made on opposite sides of it...so i dont see how i would need a key for it
ohh yah thats how it is
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Old 04-11-2004, 11:19 PM   #8
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word
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Old 04-12-2004, 12:16 AM   #9
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is there a possibility that i put the starter on backwards??

the belt/crank is turning clockwise
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Old 04-12-2004, 12:55 AM   #10
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jeremy help me?!
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Old 04-12-2004, 12:56 AM   #11
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Quote:
Originally posted by White 2.5rs
is there a possibility that i put the starter on backwards??

the belt/crank is turning clockwise
no you cant put the starter on backwards, but the positive/neg could be backwards, however Im pretty sure that would screw up other things (shorts)
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Old 04-12-2004, 01:08 AM   #12
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yeah the neg has to be bolted to that mount on the tranny...so i know i didnt screw that up, theres no diaphrams inside that pump that could have burst from sitting so long then being used is there
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Old 04-12-2004, 01:19 AM   #13
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Quote:
Originally posted by White 2.5rs
yeah the neg has to be bolted to that mount on the tranny...so i know i didnt screw that up, theres no diaphrams inside that pump that could have burst from sitting so long then being used is there
no, its just a gear pump, not a reciprocating pump (ie not like most fish tank pumps)
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Old 04-12-2004, 03:03 AM   #14
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it grounds through the block, so there is no way you can reverse positive and negative, either the starter works or it doesnt.

I guess what im getting at is: How do you know you have no oil pressure. If the cranking is normal, then obviously it has some sort of lubrication. If it cranks too fast, no compression is being bulit.

-Jake

btw, just list as many details as possible, if not sound clips.
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Old 04-12-2004, 05:09 AM   #15
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it goes glug glug glug w/ the plugs in and i can hear air out of the headers, its got compression, its speed is the same as my old engine, glug glug glug
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Old 04-12-2004, 07:52 AM   #16
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also what he was saying to me was that he was using the turbo line to check, like while he was cranking seeing if oil would come out that line, but he said it wasnt.

sorry to speak for you alex, thought that may be helpful.

Ben
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Old 04-12-2004, 08:02 AM   #17
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Old 04-12-2004, 08:06 AM   #18
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Default Re: oil is not priming?

Quote:
Originally posted by White 2.5rs
i pulled the fuel pump connector off and started cranking, no oil is being pumped, the pan is full, i even put oil into the turbo feed line and into the pressure sensor, and im talkin quarter quart down the pressure hole, filled filter w/ oil
Of the handful of times I've have tried this, I've never gotten oil to pump simply by dry cranking the engine with the starter motor. I just don't think the oil pump does anything at the 100 or so engine RPMs that the starter can pull off.

You may notice that if you have a oil pressure gauge, there's pretty much no oil pressure until at least half a second after the engine fires up. Many people (mostly oil companies) claim that engine wear is greatest from cold starting an engine after it's been sitting overnight.

Just make sure the turbo is primed with at least a few tablespoons of oil, hook everything back up including the fuel pump connector, and fire up the engine.

Good luck,

-WaC
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Old 04-12-2004, 08:10 AM   #19
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i was kinda thinking this, but with the plugs out, the engine seemed to be spinning around 100 rpm, shouldnt that atleast push some oil out?
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Old 04-12-2004, 08:12 AM   #20
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Quote:
Originally posted by White 2.5rs
i was kinda thinking this, but with the plugs out, the engine seemed to be spinning around 100 rpm, shouldnt that atleast push some oil out?
Only if the oil pickup line and oil pump are full of oil and not air.
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Old 04-12-2004, 08:21 AM   #21
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hmmm

i want to believe this is the answer, but i swear i remember people saying they got oil pressure from cranking, and not like 2 psi, but more

do u have anything else to add?

thanks wac

alex
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Old 04-12-2004, 10:35 AM   #22
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I'd check for oil somewhere else. Say, a valvecover. Oil should certainly be there by now if you've been cranking for awhile.

It's a PIA, but if you really want to make sure, I'd look in an area that get the most oil before firing it up.

Jay Storm
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Old 04-12-2004, 10:38 AM   #23
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thats always in idea, thanks!
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Old 04-12-2004, 04:37 PM   #24
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popped the valve cover and cranked for like 20 seconds, no oil came out...atleast that i could see
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Old 04-12-2004, 08:12 PM   #25
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yup, sounds like u got no oil. is your oil pump new? old???

-Jake
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