2g TSi, Built Engine, How To PRIME It??

[stiggity99]

greetings:
My new engine needs primed before I initially start it. I want to be able to turn the key, in 4/5/6 second durations, repeatedly, until I see some oil pressure on my gauge. Without the fuel pump coming on, injectors firing, or distributing spark to any cylinder. Is there a fuse I can pull, that will allow me to do, just that. Any input is greatly appreciated!

 

[WES_393]

Just unplug the injector wires, or the CAS. If the pump runs or the plugs fire it isn't going to hurt anything. You probably won't see any pressure on a gauge just from cranking, so I would suggest pulling the valve cover if you want to verify oil is circulating.

 

[goodhart]

Pull the MPI relay and turn it over. It will spin the engine via the starter.

 

[Boostdriven]

Also pull the spark plugs, this will take the compression load off the engine allowing it to spin faster, more rpm = more oil pressure. Like Wes said you will probably not see any oil pressure on your gauge but if you crank it for 20-30 seconds then that should get oil at least in to your bearings, head should be fine with just engine assembly lube.

 

[donniekak]

You should have spun the oil pump gear with a drill before installing the timing belt.

But, if you unplug the cam, and crank sensor and turn it over, it won't inject fuel, or spark.

 

[miguelmcv]

greetings:
My new engine needs primed before I initially start it. I want to be able to turn the key, in 4/5/6 second durations, repeatedly, until I see some oil pressure on my gauge. Without the fuel pump coming on, injectors firing, or distributing spark to any cylinder. Is there a fuse I can pull, that will allow me to do, just that. Any input is greatly appreciated!

NO, DO NOT CRANK THE ENGINE TO PRIME.

You have to prime it before cranking the engine.

Remove your Brake Booster nipple at the intake manifold and put it in the oil pressure sending unit, hook up a hose to the nipple and add oil with a pump, pump oil till you see oil coming on top of the head.

If you crank the motor, you will cause some damage to the bearings, even with spark plugs removed or what ever else you do, especially if you didn't add grease to the oil pump gears.


Did you add grease to the oil pump?, if you didn't, just pump oil through the oil sending unit with a pump till you see oil coming out from the top of the head.

 

[RamenPride]

greetings:
My new engine needs primed before I initially start it. I want to be able to turn the key, in 4/5/6 second durations, repeatedly, until I see some oil pressure on my gauge.

Cranking the engine over for 6 seconds (or 15-20 seconds) won't build enough pressure to show on your gauge. Do this:

http://www.dsmtuners.com/forums/art...pump-timing-components-already-installed.html

 

[stiggity99]

thank you all for the details! I will be looking for a pressure pump, and removing my power brake booster nipple for sure. The only instructions upon picking my engine up, was, "Engine must be primed before starting" I appreciate all the input. And to think, I was just going to add oil, filter.... and crank it over until I had some kind of oil pressure on my stock gauge. :-O!!!! That would have not been cool... blow it up, without even starting it. Thanks folks.

 

[talonalex92]

NO, DO NOT CRANK THE ENGINE TO PRIME.

You have to prime it before cranking the engine.

Remove your Brake Booster nipple at the intake manifold and put it in the oil pressure sending unit, hook up a hose to the nipple and add oil with a pump, pump oil till you see oil coming on top of the head.

If you crank the motor, you will cause some damage to the bearings, even with spark plugs removed or what ever else you do, especially if you didn't add grease to the oil pump gears.


Did you add grease to the oil pump?, if you didn't, just pump oil through the oil sending unit with a pump till you see oil coming out from the top of the head.

^ This. If I don't prime the engine with the timing belt off via the oil pump sprocket and impact gun, that's the only other way I will do it and is just as good. I would never just crank it over to try and prime it. That's just me, im sure plenty of people do, but this is a sure fire way to know nothing is being moved without oil on it.

 

[stiggity99]

talonalex:
Must be something to own the AWD/Turbo version of Eagles last year as a Talon!!!! Mines a 1996, but it was ordered LOADED!!! only option it doesn't have is keyless entry. Alarm, leather, Sunroof, etc.. errythang. I'm going to follow the intake mani nipple into oil sending unit method. Then turn it over, with no plugs in, and no injector clips on... this forum is simply, the best!!! I appreciate all the replies, idea's, thoughts, and hope someday I will be giving good advice to those who need it.!

 

[casperfast]

isnt this what engine assembly lube is for? ive never seen an issue with assembly lube and pulling the mpi relay or the ecu fuse and cranking for about 10 seconds.

 

[Dsmkauai]

Ya if your using good assembly lube like you should be, it's not going to hurt anything priming the engine with the mpi fuse out. I've done this plenty of times with no issues at all. All you need to do is crank till the oil light goes out and that's it. Of course the proper way is doing the pump and all, but do you really think the motor is going to stay primed after you reassemble the rest of the motor and it's been a few hours? Ya maybe I guess you leave your car sitting over night and start it in the morning without priming right. Seems the sending unit method is the best If your really worried about it. Since you can do that last right before you start the motor it makes more sense to me and would be the best way to ensure its fully primed. I mean if you put a fresh turbo on and want to prime it before start up are you really going to go thru all the hassle priming via the oil pump method? Doubt it and I've never heard of anyone doing it that way it's always using the mpi method.

 

[Boostdriven]

You ask anybody who knows what they are doing and they will tell you that during engine assembly they use engine assembly lube and most times they use more then they have to. Unplugging the injectors and pulling the plugs is all you would need to do. I've done this plenty of times with 0 issues. Priming the engine with a pump is a bit to much in my opinion, all you really need to do is fill the crank with oil and cranking the engine over will do just that. The assembly lube that should have been used during the assembly will protect the engine during cranking.

During summer time when your car sits in your driveway for a week because you're on vacation do you prime the engine first before you start it, probably not. Even worse when it sits for a week in freezing weather do you prime it, probably not. After a week all the oil that could have been drained is drained and the fine film of oil that is left on your bearings is no different then that engine assembly lube.

 

[CiscoBite1Time]

This is how I primed mine. It's really not that hard.

Cranking the engine over for 6 seconds (or 15-20 seconds) won't build enough pressure to show on your gauge. Do this:

http://www.dsmtuners.com/forums/art...pump-timing-components-already-installed.html

 

[TaLN91tsI]

I agree. Built and torn down many engines. Under no load and just spinning with starter, you don't create damage. Remember to properly break in the engine before really pushing boost.