Low compression

[Brnjas]

Update of low compression.
Another service measured compression and the results are as follows:
No. 1 cylinder= 25bar
No. 2 cylinder=25bar
No. 3 cylinder=15bar (two tines measured same)
No. 4 cylinder=13bar (two times measured same)

Now car is smoking bad, but I mean bad black smoke with black particles exiting from exhaust pipe. Special when first starting in the morning. Huge black circle on the floor. During driving and when I step on gas HUGE black cloud behind me, like I am driving bloody tractor.

I checked with my mechanic and he said not good mixture( too much fuel and too little air) causing particles.

Can be:
Exhaust or inlet Valves stacking with carbon as I was repairing bad Injectors or even valves deformed,
Piston rings worn out, regarding this I notice now engine is consuming some oil (for 900km=200ml of oil) and when engine is running I opened the oil cap and there is some pressure coming from and fumes (small), is that normal? (somebody said when piston rings are worn out can be pressure when I remove oil cap).
Had gasket is not because is not mixing oil and water. No leaking anyware.
Car is pulling good over 1500RPM. Below is slugish and shaking slowly.

Any other ideas pls be welcome...

I have been rapped last time in official Opel service. And now I need to know what is going on. I know I need to remove head to look at valves and anything but some help will be appreciated.

Sorry for loooonnng text. Now I am feeling desperate...

Zoran


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