So I went to clean the Mass Air Flow Sensor just a few minutes ago. As I walk up to the Blazer, I see what looks like wetness. I have no leaks because we fixed it two weeks ago. So I get on the ground, open the door and I see a lot of oil on the door, inside and out and all over the oil filter. I thought maybe it was loose but I couldn't turn it with my hand and I don't have a tool to see if it really is tight. So I clean it all up and then decide to check the level of oil, get the towl and as the dip stick comes out I clean it. Then I put it back in for 5 seconds and pull it out. Not even halfway out I start to see oil, now the oil isn't covering the entire width of the stick, I just see it covering half, this goes on for several inches, then way past the full mark then entire stick is covered in oil. So I cleaned it again, drove it around the block, cleaned it again and checked, still the same. The oil pressure reads as normal when hot and between 40 and 60 at start up.

Now I do have some codes, p0106, p0108, p0121, p0121 and p0121. That's how the scanner reads it, shows up as 5 codes.

Now two weeks ago I changed the MAP sensor and Throttle Position Sensor and today I just cleaned the Mass Air Flow Sensor. Usually when I clear the codes, the codes will appear again within approx 20 miles or so.

I did a search, I checked the wires, I don't see any burnt or worn out wires, the connectors look good as I removed them and put them back in. I haven't checked the voltage either as I don't have the tools to do so at the moment.

I still haven't changed the EGR valve, I did see somewhere that someone mentioned it was or is part of the harness that the MAP, etc. are on, but haven't confirmed it yet.

I don't see any other leaks on top or under the motor. I don't see any antifreeze in the oil but the Blazer seems to have no power at most RPM ranges. Seems the faster I go and stomp it, doesn't seem to go anywhere.

Is it possible the oil was over filled and there is too much pressure in the engine that is causing the motor to have too much pressure and leak?

Or maybe I have a more serious problem like blow-by?

I just seen something about a blown intake gasket, it seems the oil filter is almost directly below this or close to it? Is that a possibility? Again, I don't see any leaks but I can't check the engine 100%.

 

First I will state the obvious, the oil level should be checked with the engine off, the Blazer on level ground, and after it has sat for more than 20 minutes.


If your oil level is still overfull change your oil and filter immediately.
If the oil is too high it can cause engine damage because the crankshaft will whip up the oil and cause it to foam.


Drain the oil and change the filter, then fill the engine with 4-1/2 quarts of oil. I would suggest 10W-30


Next start the car until you register oil pressure on your gauge.
Only idle it for a minute or so and then turn it off.
Now go have a beer and come back in 20 minutes.


Pull the dipstick and clean it.
Put it back in and pull it again to read the level. It may be hard to see because the oil will be clean.
Is the oil level correct? It should be.


Now check your oil regularly to see if the oil level remains the same location or goes down slightly. It should not increase.


If it increases you have a problem.
Also keep an eye on your coolant level in your overflow reservoir.