Joe:
I essentially had no choice but to drive the
GTV-6, even when it exhibited an awful noise on startup.
It was a periodic (in the mathematical sense of the word)
tapping noise presumably once every other crankshaft
rotation, like an exhaust leak in one of the manifold
branches, but it didn't sound *quite* like that. More
metallic, I'm afraid. And the engine was down on power,
waaaay down on power.
Oh, I hate to even say this, but the first thing I'd do is pop off the
plastic caps that cover the cam sprockets and check the cam timing.
Then if that's okay, I'd step outside, heave a huge sigh of relief and wait
for the nausea to stop.
Then I'd start with the basics:
- try pulling the plug wires in turn and see if shutting off one cylinder
makes no difference.
- throw the timing light on each plug wire and see if they are all firing
normally
- check the ignition timing
- check to make sure the distributor cap isn't dirty or wet inside
- listen to each injector with a metal rod
- unplug the O2 sensor and see what difference that makes
That's a start.
Rich Wagner
Montrose, CO, USA
'82 GTV6
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