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No oil pressure while priming engine

bullet18

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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?
 

pschlosser

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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.
 
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bullet18

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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.
 

bullet18

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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

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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

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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.
 

tonysrt

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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

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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

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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

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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

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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

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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

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