No oil pressure while priming engine

[bullet18]

Im priming my 400 based 512 stroker and not getting any oil pressure while spinning the drill. Its making like a squelching noise while i do it. Do i need to turn the engine over while priming it to get oil to the sensor like with the rockers?

 

[Chryco Psycho]

It turns counterclockwise FYI

 

[bullet18]

It turns counterclockwise FYI

Yup. Turning it ccw. It sounds like oil is getting to the lifters.

 

[pschlosser]

If you're willing to pull your valve covers, you can see how well, if at all, it's oiling. If it's oiling, you may have a pressure sending unit problem.

 

[bullet18]

Ive pulled a valve cover i havent gotten amy oil out yet but i havent. Im gonna pull the intake and valley pan to see whats making the noises.

 

[pschlosser]

No leaks anywhere? No extra valley plugs in your rebuild kit? And, of course, you put oil in it, right?

 

[bullet18]

No leaks anywhere? No extra valley plugs in your rebuild kit? And, of course, you put oil in it, right?

No visible leaks. Had a shop rebuild the bottom end. And yes i put 7 qts in my 7 qt pan lol.

 

[Chryco Psycho]

the engine does't have to rotate to reach the pressure sender , if it is electric does the guage move if you ground the wire with t he key on ?

 

[bullet18]

the engine does't have to rotate to reach the pressure sender , if it is electric does the guage move if you ground the wire with t he key on ?

Im not actually getting a number at all it just says low. Ill check it.

 

[bullet18]

the engine does't have to rotate to reach the pressure sender , if it is electric does the guage move if you ground the wire with t he key on ?

It says low when its grounded

 

[Chryco Psycho]

it should peg to the top

 

[bullet18]

it should peg to the top

Well thats a relief. Lol. Glad its the pressure gauge and not the motor. Still gonna take a look at the lifters and make sure they have oil.

 

[pschlosser]

I hope it's the gauge. But he's not seeing any oil on his rocker arms while priming.

 

[tonysrt]

I would definitely put a mechanical gauge in the system to make sure your getting good pressure. When priming engine with drill, at least 1/2" drill, when first starting drill is fast and when pressure starts building drill slows down. Seeing pressure on a mechanical gauge should give you a sigh of relief. Even to test, pull out gauge sender and put mechanical gauge in that opening. When pressure is seen then go back to electric gauge

 

[Challenger RTA]

There two different locations on the cam to get oil to the passenger rockers and driver side rockers.Rotate crank until you find one then the other.

 

[bullet18]

Ok so im getting pressure to the lifters, just need to turn it over till i get pressure to the rockers. Ill get a mechanical oil pressur gauge for testing. Also ive got aftermarket billet 1.7 ratio rockers that are harder to tell when they're getting oil. I probably won't have time to work on it till Wednesday.

 

[Chryco Psycho]

If you prelubed the engine properly while assembling it & you know you have oil pressure just fire it up , the rockers will survive 10 seconds while the oil fills the rocker shafts .

 

[bullet18]

80 lbs with the drill on a mechanical oil pressure tester from hf. Awesome! I might go down from 20w50 vr1 racing oil to 15 or 10w40.

 

[tonysrt]

Now that you know you have good oil pressure you can sleep nights again. Nothing like a mechanical gauge to prove what's going on.

 

[bullet18]

Any recommendations for a good break in oil for the engine?