Question About Oil Pressure
#1
02-17-2008, 04:09 AM
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Question About Oil Pressure
Something happened a while ago to my truck and now it seems that unless I'm cruising my oil pressure is between 20-30lbs. When cruising I have 50-70lbs of pressure and there seems to be alot of chattering sound, maybe from the valve train?, coming from the exhaust.
When I changed my oil and added some of that Lucas Oil Stabilizer at a ratio of 4:1 or 20%, the sound went away. After a short while the sound came back and after only a few hundred miles my oil is very black. Nothing other than that as the symptoms to my problem.
Prognosis anyone?
When I changed my oil and added some of that Lucas Oil Stabilizer at a ratio of 4:1 or 20%, the sound went away. After a short while the sound came back and after only a few hundred miles my oil is very black. Nothing other than that as the symptoms to my problem.
Prognosis anyone?
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02-17-2008, 04:11 AM
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#3
02-17-2008, 11:04 AM
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RE: Question About Oil Pressure
I'd recommendusing a automotive stethoscope first to attempt diagnosing the problem without taking anything apart. Touch the stethoscope to the valve cover aboveeach rocker armwhile the engine is running. If the problem is in the valve train you should hear an area which sounds similar to the chatter you describe. If you don't hear anything touch the exhaust manifoldand the intalke manifold at each port. On the intake manifold you may hear the fuel injectors cycling also so don't confuse the sounds. Touch the fuel injectors to identify what they sound like so you know. If still no determination, climb under the truck and do the same exploration around the oil pan,
If you still are not sure and still think it is the valve train, you can pull the valve covers and with the engine running touch each rocker arm bolt. You'll be able to tell the difference if the problem is there. Just pull one valve cover at a time and don't run the engine long as oil will get on your exhaust manifold. Hope this helps. I bought my stethoscope through Summit Racing awhile back, but I am sure Napa or one of the other parts stores has inexpensive ones also.
If you still are not sure and still think it is the valve train, you can pull the valve covers and with the engine running touch each rocker arm bolt. You'll be able to tell the difference if the problem is there. Just pull one valve cover at a time and don't run the engine long as oil will get on your exhaust manifold. Hope this helps. I bought my stethoscope through Summit Racing awhile back, but I am sure Napa or one of the other parts stores has inexpensive ones also.
#4
02-17-2008, 11:13 AM
RE: Question About Oil Pressure
ORIGINAL: turkeyhunter1962
I'd recommendusing a automotive stethoscope first to attempt diagnosing the problem without taking anything apart. Touch the stethoscope to the valve cover aboveeach rocker armwhile the engine is running. If the problem is in the valve train you should hear an area which sounds similar to the chatter you describe. If you don't hear anything touch the exhaust manifoldand the intalke manifold at each port. On the intake manifold you may hear the fuel injectors cycling also so don't confuse the sounds. Touch the fuel injectors to identify what they sound like so you know. If still no determination, climb under the truck and do the same exploration around the oil pan,
If you still are not sure and still think it is the valve train, you can pull the valve covers and with the engine running touch each rocker arm bolt. You'll be able to tell the difference if the problem is there. Just pull one valve cover at a time and don't run the engine long as oil will get on your exhaust manifold. Hope this helps. I bought my stethoscope through Summit Racing awhile back, but I am sure Napa or one of the other parts stores has inexpensive ones also.
I'd recommendusing a automotive stethoscope first to attempt diagnosing the problem without taking anything apart. Touch the stethoscope to the valve cover aboveeach rocker armwhile the engine is running. If the problem is in the valve train you should hear an area which sounds similar to the chatter you describe. If you don't hear anything touch the exhaust manifoldand the intalke manifold at each port. On the intake manifold you may hear the fuel injectors cycling also so don't confuse the sounds. Touch the fuel injectors to identify what they sound like so you know. If still no determination, climb under the truck and do the same exploration around the oil pan,
If you still are not sure and still think it is the valve train, you can pull the valve covers and with the engine running touch each rocker arm bolt. You'll be able to tell the difference if the problem is there. Just pull one valve cover at a time and don't run the engine long as oil will get on your exhaust manifold. Hope this helps. I bought my stethoscope through Summit Racing awhile back, but I am sure Napa or one of the other parts stores has inexpensive ones also.
If you go ahead with the second part of that .... DO NOT, DO NOT , DO NOT put a towel over the exhaust and leave it there. When you take the valve cover off with the motor running the oil will get on the exhaust so you put a towel over top. SOAK THE TOWEL FIRST. If you dont use a towel you really wont be able to see through the smoke from the oil on the exhaust.
50-70psi while crusing? That seems a little high sure its not in kilopascals and runnin low? (canadian) actually either way sounds a bit off, psi highkPa low.
#5
02-17-2008, 11:19 AM
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RE: Question About Oil Pressure
ORIGINAL: IndyRamMan
If you go ahead with the second part of that .... DO NOT, DO NOT , DO NOT put a towel over the exhaust and leave it there. When you take the valve cover off with the motor running the oil will get on the exhaust so you put a towel over top. SOAK THE TOWEL FIRST. If you dont use a towel you really wont be able to see through the smoke from the oil on the exhaust.
50-70psi while crusing? That seems a little high sure its not in kilopascals and runnin low? (canadian)
ORIGINAL: turkeyhunter1962
I'd recommendusing a automotive stethoscope first to attempt diagnosing the problem without taking anything apart. Touch the stethoscope to the valve cover aboveeach rocker armwhile the engine is running. If the problem is in the valve train you should hear an area which sounds similar to the chatter you describe. If you don't hear anything touch the exhaust manifoldand the intalke manifold at each port. On the intake manifold you may hear the fuel injectors cycling also so don't confuse the sounds. Touch the fuel injectors to identify what they sound like so you know. If still no determination, climb under the truck and do the same exploration around the oil pan,
If you still are not sure and still think it is the valve train, you can pull the valve covers and with the engine running touch each rocker arm bolt. You'll be able to tell the difference if the problem is there. Just pull one valve cover at a time and don't run the engine long as oil will get on your exhaust manifold. Hope this helps. I bought my stethoscope through Summit Racing awhile back, but I am sure Napa or one of the other parts stores has inexpensive ones also.
I'd recommendusing a automotive stethoscope first to attempt diagnosing the problem without taking anything apart. Touch the stethoscope to the valve cover aboveeach rocker armwhile the engine is running. If the problem is in the valve train you should hear an area which sounds similar to the chatter you describe. If you don't hear anything touch the exhaust manifoldand the intalke manifold at each port. On the intake manifold you may hear the fuel injectors cycling also so don't confuse the sounds. Touch the fuel injectors to identify what they sound like so you know. If still no determination, climb under the truck and do the same exploration around the oil pan,
If you still are not sure and still think it is the valve train, you can pull the valve covers and with the engine running touch each rocker arm bolt. You'll be able to tell the difference if the problem is there. Just pull one valve cover at a time and don't run the engine long as oil will get on your exhaust manifold. Hope this helps. I bought my stethoscope through Summit Racing awhile back, but I am sure Napa or one of the other parts stores has inexpensive ones also.
If you go ahead with the second part of that .... DO NOT, DO NOT , DO NOT put a towel over the exhaust and leave it there. When you take the valve cover off with the motor running the oil will get on the exhaust so you put a towel over top. SOAK THE TOWEL FIRST. If you dont use a towel you really wont be able to see through the smoke from the oil on the exhaust.
50-70psi while crusing? That seems a little high sure its not in kilopascals and runnin low? (canadian)
#6
02-17-2008, 11:36 AM
RE: Question About Oil Pressure
ORIGINAL: turkeyhunter1962
Yea IndyRamMan, guess I shoulda warned him about that. You've first hand experience with towels on the exhaust and the problems they can cause. I try to do that part of the testing while the engine is cold and only take a few moments with the engine running. I've been able to wipe up the oil before the headers get too hot and start blowing the blue smoke everywhere. Soaking the towel in water first is a great idea.
ORIGINAL: IndyRamMan
If you go ahead with the second part of that .... DO NOT, DO NOT , DO NOT put a towel over the exhaust and leave it there. When you take the valve cover off with the motor running the oil will get on the exhaust so you put a towel over top. SOAK THE TOWEL FIRST. If you dont use a towel you really wont be able to see through the smoke from the oil on the exhaust.
50-70psi while crusing? That seems a little high sure its not in kilopascals and runnin low? (canadian)
ORIGINAL: turkeyhunter1962
I'd recommendusing a automotive stethoscope first to attempt diagnosing the problem without taking anything apart. Touch the stethoscope to the valve cover aboveeach rocker armwhile the engine is running. If the problem is in the valve train you should hear an area which sounds similar to the chatter you describe. If you don't hear anything touch the exhaust manifoldand the intalke manifold at each port. On the intake manifold you may hear the fuel injectors cycling also so don't confuse the sounds. Touch the fuel injectors to identify what they sound like so you know. If still no determination, climb under the truck and do the same exploration around the oil pan,
If you still are not sure and still think it is the valve train, you can pull the valve covers and with the engine running touch each rocker arm bolt. You'll be able to tell the difference if the problem is there. Just pull one valve cover at a time and don't run the engine long as oil will get on your exhaust manifold. Hope this helps. I bought my stethoscope through Summit Racing awhile back, but I am sure Napa or one of the other parts stores has inexpensive ones also.
I'd recommendusing a automotive stethoscope first to attempt diagnosing the problem without taking anything apart. Touch the stethoscope to the valve cover aboveeach rocker armwhile the engine is running. If the problem is in the valve train you should hear an area which sounds similar to the chatter you describe. If you don't hear anything touch the exhaust manifoldand the intalke manifold at each port. On the intake manifold you may hear the fuel injectors cycling also so don't confuse the sounds. Touch the fuel injectors to identify what they sound like so you know. If still no determination, climb under the truck and do the same exploration around the oil pan,
If you still are not sure and still think it is the valve train, you can pull the valve covers and with the engine running touch each rocker arm bolt. You'll be able to tell the difference if the problem is there. Just pull one valve cover at a time and don't run the engine long as oil will get on your exhaust manifold. Hope this helps. I bought my stethoscope through Summit Racing awhile back, but I am sure Napa or one of the other parts stores has inexpensive ones also.
If you go ahead with the second part of that .... DO NOT, DO NOT , DO NOT put a towel over the exhaust and leave it there. When you take the valve cover off with the motor running the oil will get on the exhaust so you put a towel over top. SOAK THE TOWEL FIRST. If you dont use a towel you really wont be able to see through the smoke from the oil on the exhaust.
50-70psi while crusing? That seems a little high sure its not in kilopascals and runnin low? (canadian)