Rb20det Compression Test Results

[mtopxsecret6]

I did a search for similar topics.. but nothing that matched my topic.

Ok guys, this is what has happened. It was super hot day the other day, i noticed my oil pressure gauge drop as though i had no oil pressure. so i pulled over and the tappets where ticking etc as though there was no oil. The engine seemed super hot. Checked the oil, the gauge said there was plenty of oil, and when i held the throttle on the oil pressure picked up to 40psi.. then drop off when i stopped at the lights. so i switched the car off at all the lights and the car got me home.

The next morning, the oil level was full, but.. i had no radiator fluid.. there was a hole in the bottom.. and the water was flowing out as quick as i was pouring it in. so.. that explains the super hot engine.

Now.. the oil was pissing out of the rocker cover.. causing lots of smoke out of the engine bay, so i bought a new kit and replaced it. i did notice that i was undoing the screw down bolts with my fingers.. so that explains the oil pissing out over the exhaust, and i'm hoping the dropping oil pressure. When i started the car in the morning.. cold.. the oil pressure held at 40psi with no sign's of dropping, though i think it need's to be 60psi at cold idle.

So.. i just did a compression check the engine cold.. and i got

1... 160psi

2... 160psi

3... 145psi

4... 130psi

5... 150psi

6... 150psi

I don't believe the head gasket has gone.. but it does seem the piston rings on the 3rd and 4th cylinder's are on their merry way.

Q1, with the rocker cover gasket's no being secured down and not sealing correctly.. will that drop the oil pressure?

Q2, will it hurt my engine with such a compression variation?

Q3, is their another method of checking for a blown head gasket? remember there is no water in the cooling system.. i need to get a new radiator.

[MBS206]

Any water in the oil?

Lots of steam out the exhaust (more then normal)?

Only other way to really check is to pull the head off, which means you replace the head gasket if blown or not.

[mtopxsecret6]

The oil does not look watery.. and it doesn't blow any steam out of the exhaust.. just black fuel smoke when your pinning it.

[GTS4WD]

Drop a little bit of oil down the spark plug hole.

Run the compression test. See i this changes the results. If so. It looks like its your rings

[mtopxsecret6]

so, would the loose rocker covers make it loose oil pressure? And will the compression difference be a problem? If the rings may be on their way out?