The 'Service Engine Soon' light stays on, and my mechanic (a very
sharp guy) thinks the P0300 code - and the many engine misfires on
cylinder 6 -
mean it's time for a Timing Chain. (This 1996 Century
has 121,000 miles).
tested the coil, wires, and spark plugs: all seem okay.
He's performed a
'cylinder balance test' (?), and it passed.
Compression tests on cylinders 2, 4,
6: good pressure.
He doesn't believe #6 fuel injector needs replacing.
noticed the timing fluctuates at idle, but stabilizes at higher
RPM. The engine
misfire also seems to go away at higher RPM.
Any other opinions? Thanks!