tode wrote:If the test with WPS sensor in the intake manifold has given negative results, the problem of your car is a relief valve damage, from Z2-1 file it is clear that the lack of exhaust bag because the pressure rises quickly, a test, confirming, my idea is a test with 500 WPS in the exhaust pipe.
Fat Freddy wrote:My wild stab is a problem with the inlet valve of #2.
Cylinder pressure goes way below inlet manifold. No air entering engine.
Nothing to compress, so low compression.
High cylinder vacuum drawing oil into the cylinder and pumping it out.
But Hey! Chuck an engine in.
Fat Freddy wrote:IMO the "exhaust bag' shows the that the cylinder has leaked. The down stroke of the cylinder pressure should match the upstroke as close as possible.
The reason for no bag is because the cylinder was capable of holding the lower pressure it reached so it matched the pressure to start with. While the other cylinders produced a higher pressure because of the % fill of air, the cylinder leaked more. There fore once the piston reached the same position on it's down stroke the finish pressure was lower than the start pressure.
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