Hello, Chevy S10 1996 4Cyl 2.2L 130000km. I recently noticed an exhaust leak turns out its the gasket between the manifold and the exhaust pipe. Before I had a chance to fix it the enigine started shaking like crazy. I also notcied the o2 sensor at the front is damaged. Changed the spark plugs noticed the first one barely had a gap. It reduced the shaking but not entirely and still lacked power.
Brought it to the dealer this is the diagnostic;
scan for codes p0301 missfire cyl1, p0302 missfire cyl2 p1133 o2 sensor
cross count B1, S1 too few missfire code-check for spark on 1&2 ok check compression Cyl 1 0psi Cyl2 25psi cyl3 125psi cyl4 150psi-engine will have to come appart possible head gasket.
I got a second opinion engine is shot.
I live up North close to Alaska and not to many places are available, I
heard similar stories where it was the o2 sensor, whats your take on this?
Thx.