Hi all.
I am looking for opinions/suggestions concerning a low oil pressure indication light.
This may be a bit long so bare with me.
97 4Runner 4x4 Limited, 177k miles
Purchased and found cracked heads
Got JDM engine and swapped all appropriate parts, (new oil pickup tube gasket). When I got the JDM home and removed the valve covers, I was very concerned about the amount of gunk and "burnt" appearance of the cam and lifter areas. I called the JDM folks and they told me that these low mileage engines sometimes do not get regular oil changes. They were able to convince me that what I was seeing was "normal."
Continued with the swap, (with a lot of help from threads on this website).
Started right up, no issues. 10w/30 oil.
After driving for about 15 miles, came to a complete stop, idle at apprx 600 to 650 rpm, (dash gauge), low oil lamp comes on.
If I take the rpm to say, 700, lamp goes out.
Took home, replace oil and filter. Results are the same as above. Put a manual gauge in play, After warming up, 2# at idle, 23# at 3000 rpm.
Did a bunch of reading on this and other websites.
Changed oil and filter, this time 10w-40 plus a quart of Lucas oil restorer.
Started it up, drove for 15 to 20 minutes, put gauge back on, idle 8#, 3000 rpm 45#. Life is good.
Drove for about 150 miles, light back on. put a quart of that "engine cleanout crap" in and changed the oil and filter again, (10w-40 plus Lucas stuff).
Drove for 300 miles, light back on...................
Okay, for those still with me,
I did all the oil changes because I was hoping the engine was cleaning itself up and just plugging the oil filter, but now I am doubting that.
So it basically comes down to oil pump or bearing clearances.
My question is, if it were a bearing issue, why would I not get an oil lamp immediately after the truck is warmed up.
Same goes for bad oil pump or blocked pick up tube.
Thoughts on moving forward?
I am looking for opinions/suggestions concerning a low oil pressure indication light.
This may be a bit long so bare with me.
97 4Runner 4x4 Limited, 177k miles
Purchased and found cracked heads
Got JDM engine and swapped all appropriate parts, (new oil pickup tube gasket). When I got the JDM home and removed the valve covers, I was very concerned about the amount of gunk and "burnt" appearance of the cam and lifter areas. I called the JDM folks and they told me that these low mileage engines sometimes do not get regular oil changes. They were able to convince me that what I was seeing was "normal."
Continued with the swap, (with a lot of help from threads on this website).
Started right up, no issues. 10w/30 oil.
After driving for about 15 miles, came to a complete stop, idle at apprx 600 to 650 rpm, (dash gauge), low oil lamp comes on.
If I take the rpm to say, 700, lamp goes out.
Took home, replace oil and filter. Results are the same as above. Put a manual gauge in play, After warming up, 2# at idle, 23# at 3000 rpm.
Did a bunch of reading on this and other websites.
Changed oil and filter, this time 10w-40 plus a quart of Lucas oil restorer.
Started it up, drove for 15 to 20 minutes, put gauge back on, idle 8#, 3000 rpm 45#. Life is good.
Drove for about 150 miles, light back on. put a quart of that "engine cleanout crap" in and changed the oil and filter again, (10w-40 plus Lucas stuff).
Drove for 300 miles, light back on...................
Okay, for those still with me,
I did all the oil changes because I was hoping the engine was cleaning itself up and just plugging the oil filter, but now I am doubting that.
So it basically comes down to oil pump or bearing clearances.
My question is, if it were a bearing issue, why would I not get an oil lamp immediately after the truck is warmed up.
Same goes for bad oil pump or blocked pick up tube.
Thoughts on moving forward?
