7MGE oil pressure

Arne (Denmark) · 05-30-2007, 05:28 PM

Hi there. My first time here.

I have a 1987 MKiii Supra (7MGE) which I bought three months ago.
I topped up the oil with some Mobil 10W40 oil even though the guy I bought it from said I should use 15W-40, because the mileage is about 250.000 km
.
The problem is that after that the oil pressure has tuned down quite a bit. Normally the pressure idling was 1.7 kg/cm3.
Now I can hardly get the pressure to rise to more than 2.0 and it's generally too low. -Only about 1.0 idling.
AND there is a rattling, knocking from the engine!? Nothing when it's idling but gets bad about 2000-3000 rpm. Hmmmm.

Have you guys ever had or heard an oil pump go bad?
What is your normal oil pressure reading on the cars?
Can a faulty bearing cause the oil pressure to fall?

After all I hope it is only my oil pump otherwise I got to look around for another engine.

I will be happy for your comments.

05-30-2007, 05:28 PM	#1
Arne (Denmark) Stock Join Date: May 2007 Location: Denmark Posts: 5	7MGE oil pressure Hi there. My first time here. I have a 1987 MKiii Supra (7MGE) which I bought three months ago. I topped up the oil with some Mobil 10W40 oil even though the guy I bought it from said I should use 15W-40, because the mileage is about 250.000 km . The problem is that after that the oil pressure has tuned down quite a bit. Normally the pressure idling was 1.7 kg/cm3. Now I can hardly get the pressure to rise to more than 2.0 and it's generally too low. -Only about 1.0 idling. AND there is a rattling, knocking from the engine!? Nothing when it's idling but gets bad about 2000-3000 rpm. Hmmmm. Have you guys ever had or heard an oil pump go bad? What is your normal oil pressure reading on the cars? Can a faulty bearing cause the oil pressure to fall? After all I hope it is only my oil pump otherwise I got to look around for another engine. I will be happy for your comments.