Something strange

[Roger63]

Yesterday I was road testing my car after finally getting the brakes bugs all worked out. While I was slowing to turn into the driveway my oil pressure went to zero. I immediately killed the engine and rolled into my drive,put in park fired it up again and had full pressure back. Any ideas?

 

[440 PHIXX]

Electric gauge or mechanical?

 

[SlinktRR]

if electric I would suspect gauge issue

 

[Roger63]

Electric gauge or mechanical?

Both, electric in dash mechanical under dash.

 

[Roger63]

if electric I would suspect gauge issue

It lost pressure I could hear valve train start to tick.

 

[440 PHIXX]

Both, electric in dash mechanical under dash.

I’d pull the drive gear and make sure the hex isn’t rounded. Usually they snap when they fail.

 

[Roger63]

I’d pull the drive gear and make sure the hex isn’t rounded. Usually they snap when they fail.

I put a new one in it along with a new bushing when I built it. It doesn't have 500 miles on it.

 

[440 PHIXX]

I have seen that happen on high mileage cars that never had the oil changed. The pickup gets clogged, then it clears a bit. But I’m pretty sure you keep after your oil.

 

[Roger63]

I have seen that happen on high mileage cars that never had the oil changed. The pickup gets clogged, then it clears a bit. But I’m pretty sure you keep after your oil.

Absolutely

 

[440 PHIXX]

Do you have one of those long hex drive shafts Direct Connection used to sell? You could turn the pump with a drill, and with the valve cover, or intake off you can verify oil getting to the top.

 

[440 PHIXX]

Nice thing about a BB Mopar... it’s easy to change the oil pump. You could also take it apart and rebuild it yourself.

oops! I assumed it’s a big block!

 

[Roger63]

Do you have one of those long hex drive shafts Direct Connection used to sell? You could turn the pump with a drill, and with the valve cover, or intake off you can verify oil getting to the top.

The pump after removal?

 

[440 PHIXX]

Oil pumps don’t cost that much. You might want to replace it for safety sake.

 

[Roger63]

Nice thing about a BB Mopar... it’s easy to change the oil pump. You could also take it apart and rebuild it yourself.

oops! I assumed it’s a big block!

It's new also, i might replace it.

 

[Roger63]

Oil pumps don’t cost that much. You might want to replace it for safety sake.

 

[440 PHIXX]

Chrysler used to sell that long hex to prime a new build or an engine that has been sitting. A welder could make you one.

 

[Roger63]

I'm going to be in there anyway next week, I'm gonna install a March serpentine setup on it.

 

[forphorty]

I assume you have checked the oil level.

 

[Roger63]

I assume you have checked the oil level.

yep it was full

 

[1 Wild R/T]

How hard were you on the brakes? I've lost oil pressure after a WOT run when I got on the brakes hard....

WOT pumps allot of oil out of the pan then you jump on the brakes & what oil is still in the pan sloshes forward & the pickup sucks air... Oil pressure drops to zero & takes a few seconds to recover...