Will not pre oil prime...
Thread Starter
Racer
Joined: Sep 2005
Posts: 330
Likes: 0
From: Lurkerville
Will not pre oil prime...
Replaced lifters on an 89 straight from the box with assembly lube, Medding JB-2079, and attempting to pre oil engine. First tried with drill and only got a little gurgle from a couple of rockers then it stopped. Ran the drill for atleast 5 min had 50 psi on gauge and still no flow from rockers.
Installed one old lifter and still nothing. With plugs out I turned over with starter, oil pressure did a slow rise to 50 and still no oil.
What am i missing....
Installed one old lifter and still nothing. With plugs out I turned over with starter, oil pressure did a slow rise to 50 and still no oil.
What am i missing....
Safety Car
Joined: Sep 2001
Posts: 4,157
Likes: 554
From: Glenbeulah Wi
Replaced lifters on an 89 straight from the box with assembly lube, Medding JB-2079, and attempting to pre oil engine. First tried with drill and only got a little gurgle from a couple of rockers then it stopped. Ran the drill for atleast 5 min had 50 psi on gauge and still no flow from rockers.
Installed one old lifter and still nothing. With plugs out I turned over with starter, oil pressure did a slow rise to 50 and still no oil.
What am i missing....
Installed one old lifter and still nothing. With plugs out I turned over with starter, oil pressure did a slow rise to 50 and still no oil.
What am i missing....
Safety Car
Joined: Jul 1999
Posts: 3,946
Likes: 63
From: Marianna FL
The other thing to keep in mind is that unless you're using an old distributor housing or one of those prefab oil primers, I don't think you will be able to pressurize the lifter oil passages enough to force oil into all of the lifters.
Safety Car
Joined: May 2001
Posts: 4,759
Likes: 1,647
From: Fairfax Virginia
Priming your oil pump
I have a standard Oil Priming Tool (SUMMIT) for Chevy engines and I use a 18 Volt DeWalt cordless drill. It works perfectly, no looseness or movement while working. This tool is great when you leave your car sit for the wintertime or any long term storage.
On my 1988 L98 I first see pressure on the gauge and then after a minute or so you will start to see oil coming up to the valve train. I use the 1/2" drill on the highest speed and it makes over 60 lbs of oil pressure when on a cold engine. If I didn't see oil movement or erratic pressures I would check my oil level. Since your gauge indicates that you indeed have pressure I would start the car and recheck your pressure (preferably with a manual gauge) and look into your valve cover to verify oil movement.
On my L-71 427 in my 1968 it too makes oil at the valve train. My rebuilt engine burned up a new roller rocker arm because my one of my "new" Pushrod's was plugged up from the factory.
Good Luck and may your "pressure problems" be over with!
On my 1988 L98 I first see pressure on the gauge and then after a minute or so you will start to see oil coming up to the valve train. I use the 1/2" drill on the highest speed and it makes over 60 lbs of oil pressure when on a cold engine. If I didn't see oil movement or erratic pressures I would check my oil level. Since your gauge indicates that you indeed have pressure I would start the car and recheck your pressure (preferably with a manual gauge) and look into your valve cover to verify oil movement.
On my L-71 427 in my 1968 it too makes oil at the valve train. My rebuilt engine burned up a new roller rocker arm because my one of my "new" Pushrod's was plugged up from the factory.
Good Luck and may your "pressure problems" be over with!
