Optispark is mounted on the nose of the engine like the Corvette, since
it used the Corvette engine.

Gary Skidmore wrote:
> Sorry, this is not my '69 Corvette with problem, but:
>
> Recently my roomates 95 V8 Camaro failed smog ($69) with high emissions,
> last year it was overhauled in shop.
> Visual/Functional checks passed
> 15mph HC=181 C=1.13 failed
> 25mph HC=164 C=1.07 failed
>
> I then took it for a diagnostic checkup ($90) and got the following results:
> scope check found secondary problem, average kv to snap kv change low
> found weak catalyst rec.
> 02 sensor heater wire poor insulation
> egr sol. harness cut on arrival (connectors were mated by diagnostic
> tech)
>
> They recommended a tune-up, platinum plugs, cap, rotor and plug wires.
> Check for intermittent or fouled sparkplug
> plug wire for leakage to ground
> distributor cap for arcing or carbon tracks.
> Special Note: new sparkplugs may activate this message.
>
> Note, no apparent driver warnings present such as check engine light.
>
> I've removed only two plugs so far. Third plug back on driver side I could
> remove from top but replace only from below. The fourth on driver side is
> near impossible to reach. Haven't started on passenger side nor plug wires.
>
> My auto parts guy says engine must be lowered to replace $200 cap/rotor.
> These are covered by the firewall/dash/windshield. O GREAT. What engineer
> should be congratulated for this fiasco? I've always admired the design of
> the Camaro but never worked on one.
>
> But wait. I am confused. The plug wires came from the front of the engine.
> How does that work? Where is the distributor(cap/rotor) on this car? On
> the crankshaft, at front of engine like the '95 Caprice or at top rear of
> engine such as the HEI type?
>
> Any advice?
>
> Gary
>
>