my oil presher drops
03-23-2007, 12:00 AM
#12
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Originally Posted by BillBoost37
The pumps in the 3800 are driven by the crank and are such that as Napa mentioned, they don't really go bad. It'* a great system.
Oil pressure is created as oil is forced through the crank and out the bearings and other bearing areas. The only pressure regulating item in the car is behind the oil filter adapter. The spring and slide regulate pressure based on spring pressure.
With the motor out, this would be an easy item to inspect and possibly replace. The oil filter adapter gasket (to my knowledge) is only available at the dealer or performance places like Intense/ZZP. Cost is ~$2.50 for the gasket.
Oil pressure is created as oil is forced through the crank and out the bearings and other bearing areas. The only pressure regulating item in the car is behind the oil filter adapter. The spring and slide regulate pressure based on spring pressure.
With the motor out, this would be an easy item to inspect and possibly replace. The oil filter adapter gasket (to my knowledge) is only available at the dealer or performance places like Intense/ZZP. Cost is ~$2.50 for the gasket.
My odometer doesn’t work it didn’t even when I got the car witch was 1 year ago it reads 176,000 and its got to be a good number over 200,000. The car has went through 2 Trans and im pouting in a 3rd. Tonight I am guna pull off my oil filter adapter and see what im working with
03-23-2007, 01:02 AM
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The oil filter adapter is off, The spring and slide look and feel like new. It slides smoothly and i can push it in a ¼inch it’* a really strong spring.
Im debating if im gnu take off the timing chan cover and take a look inside.
what do u think?
Im debating if im gnu take off the timing chan cover and take a look inside.
what do u think?
03-23-2007, 07:06 AM
#14
DINOSAURUS BOOSTUS
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I forget how far out that piece should stick. I'm wondering if the spring might be getting weak or if I'm totallly in left field.
Going to ask Bill Buttermore and Bob Dillion to hop in here..they have much more experience in this area.
Going to ask Bill Buttermore and Bob Dillion to hop in here..they have much more experience in this area.
03-23-2007, 08:43 AM
#15
Oakley - Please follow the posting guidelines found in this thread:
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03-24-2007, 02:53 AM
#16
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Boosty, I can't remember how far that little piston is supposed to stick out.
Maybe Bob can? But, seems to me that buying a new spring would be the best way to tell. If the length and strength of the new spring are the same as the old one, then look elsewhere. Also check the piston and bore for scratches or scuffs or evidence that the piston was stuck in the bore. Otherwise, what has been said seems correct to me. That is, the higher the engine temperature, the lower the oil pressure. The slower the engine speed, the lower the oil pressure. But with 200K+ mileage, as the others have said, worn bearings are the likely cause.
Oil pressure is very sensitive to engine temperature. Some oils really thin down when hot. Was the car running hotter than it used to? Here are some things you can try in addition to the new spring. Try heavier oils: 15W-40 or even 20W-50 at your mileage. Run a 180 thermostat. Install a transmission cooler. It is not an obvious benefit, but in addition to making your transmissions live longer, a separate transmission cooler will drop your engine operating temperature (and increase your oil pressure) noticeably.
And, since the engine is out anyway, if you have the time, put it on a stand, pull the pan and plastigage the main and rod bearings. Better to find a bearing problem now than after it is back in the car.
Maybe Bob can? But, seems to me that buying a new spring would be the best way to tell. If the length and strength of the new spring are the same as the old one, then look elsewhere. Also check the piston and bore for scratches or scuffs or evidence that the piston was stuck in the bore. Otherwise, what has been said seems correct to me. That is, the higher the engine temperature, the lower the oil pressure. The slower the engine speed, the lower the oil pressure. But with 200K+ mileage, as the others have said, worn bearings are the likely cause. Oil pressure is very sensitive to engine temperature. Some oils really thin down when hot. Was the car running hotter than it used to? Here are some things you can try in addition to the new spring. Try heavier oils: 15W-40 or even 20W-50 at your mileage. Run a 180 thermostat. Install a transmission cooler. It is not an obvious benefit, but in addition to making your transmissions live longer, a separate transmission cooler will drop your engine operating temperature (and increase your oil pressure) noticeably.
And, since the engine is out anyway, if you have the time, put it on a stand, pull the pan and plastigage the main and rod bearings. Better to find a bearing problem now than after it is back in the car.
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