Zero Oil Pressure 1948 Packard
Posted by Packard 1948 On 2020/10/6 14:19:23
Greetings,
It has been a long time since I posted and that is because my dad's Packard has been running nicely these last years...until now...
It seems that the engine has suddenly lost all oil pressure...like zero oil pressure.
The background is that a couple of years ago we had the engine rebuilt and it was running perfectly. One day my dad started up the car and about 1/2 block away the oil pressure dropped to zero.
The car is a Packard Engine Serial Number book calls the engine a "1948 22 Series" 327 CID, 145 HP, Super Eight L head, 5 bearing, solid lifters Casting number: 389803 11-17-48. It has a remote oil filter unit that is plumbed like the attached picture (this could be the issue however we have not looked into it).
To troubleshoot, we have removed all sparkplugs and when using the starter motor to spin the engine and performed the following steps:
-Verified oil level is at the max on the dip stick.
-Checked the electric oil pressure gauge and when the sender wire is grounded out the gauge will peg at max oil pressure...so it is not the oil pressure gauge.
-Replaced the oil pressure sender unit and still no oil pressure...so it is not the sender unit.
-Removed the oil sender unit and cranked the engine over and no oil is squirting out of the open hole...so the pump is not moving oil.
-A local Packard guy suggested that perhaps the oil pump pin has sheared off so my dad ordered a new pump and when the new pump arrived I removed the oil pump and stuck a wood dowel inside the impeller hole and tried to turn the drive gear and verified that the pin had not sheared...so it is not the oil pump.
-Since he had a new pump already bought he wanted to use it so I squirted oil into the impeller holes and the shaft and reinstalled the replacement oil pump (wow that is a HORRIBLE JOB ...trying to get the pump gear meshed with the distributer slot and then getting the teeth to align to get the distributer rotor back to the same position...) so the new pump is installed and there is not any oil squirting out of the hole.
Today I will read about the remote oil filter assembly and also read about the oil pickup tube as perhaps that could have fallen off.)
Knowing that you all are the depository of all Packard knowledge out there I wanted to reach out to the experts and get your advice...any help would be greatly appreciated.
THANKS EVERYONE!!!
Attach file:
(193.98 KB)
It has been a long time since I posted and that is because my dad's Packard has been running nicely these last years...until now...
It seems that the engine has suddenly lost all oil pressure...like zero oil pressure.
The background is that a couple of years ago we had the engine rebuilt and it was running perfectly. One day my dad started up the car and about 1/2 block away the oil pressure dropped to zero.
The car is a Packard Engine Serial Number book calls the engine a "1948 22 Series" 327 CID, 145 HP, Super Eight L head, 5 bearing, solid lifters Casting number: 389803 11-17-48. It has a remote oil filter unit that is plumbed like the attached picture (this could be the issue however we have not looked into it).
To troubleshoot, we have removed all sparkplugs and when using the starter motor to spin the engine and performed the following steps:
-Verified oil level is at the max on the dip stick.
-Checked the electric oil pressure gauge and when the sender wire is grounded out the gauge will peg at max oil pressure...so it is not the oil pressure gauge.
-Replaced the oil pressure sender unit and still no oil pressure...so it is not the sender unit.
-Removed the oil sender unit and cranked the engine over and no oil is squirting out of the open hole...so the pump is not moving oil.
-A local Packard guy suggested that perhaps the oil pump pin has sheared off so my dad ordered a new pump and when the new pump arrived I removed the oil pump and stuck a wood dowel inside the impeller hole and tried to turn the drive gear and verified that the pin had not sheared...so it is not the oil pump.
-Since he had a new pump already bought he wanted to use it so I squirted oil into the impeller holes and the shaft and reinstalled the replacement oil pump (wow that is a HORRIBLE JOB ...trying to get the pump gear meshed with the distributer slot and then getting the teeth to align to get the distributer rotor back to the same position...) so the new pump is installed and there is not any oil squirting out of the hole.
Today I will read about the remote oil filter assembly and also read about the oil pickup tube as perhaps that could have fallen off.)
Knowing that you all are the depository of all Packard knowledge out there I wanted to reach out to the experts and get your advice...any help would be greatly appreciated.
THANKS EVERYONE!!!
Attach file:
(193.98 KB)
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