chevy lumina '92 3.1 I replaced the timing chain & gears, chain was broke.
tryed to start but it try's to hit but will not start, I smell gas when I
try it.something else, when I put #1 piston TOP the mark on gear on crank
is not stright up but off to the right side alittle due to keyway on
shaft. when I put new chain & gears on people told to go ahead and align
the marks on the gears. now the car will not start.
When it's on top dead center on #1 piston, both intake and exhaust valves
the marks on the gears have to line up or it will not be "in time". It can
off if it's on TDC but both the valves are not closed.
It's impossible to time it 180 degrees out. For each engine (crankshaft)
rotation (meaning the #1 piston is at TDC) the camshaft will rotate 180
degrees. So at each engine (crankshaft) rotation the camshaft will be behind
by 180 degrees until the second crank rotation.
How ever it could be off several teeth, or one for that matter.
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