Posted by Charlie (IP: 131.204.68.119) on October 10, 2000 at 19:25:43:
In Reply to: another timing question posted by max on October 10, 2000 at 18:01:05:
You had it right, the way to time it is with the vacuum hose disconnected & plugged.
The late '70s early 80s 302s used a nylon cam gear, they are not worth a crap and usually fail at under 100k, I've replaced a few, I'd bet a whole lot that it has skipped a tooth or so, pull your fuel pump and see if it has considerable slack or shine a light in there, you'll probably see some chunks of nylon. Its not too bad to replace, about a days work in your backyard though. -CP
: Does anyone know a sure fire way to time a '77 Mav with a 302 2v?
: I attempted to time the car by taking the vacuum hose of and setting it to
: 6 degrees but I could not get the car to run with the hose off. I plugged the
: vacuum line ( I figured that part out eventually ) and could not get the car
: to run worth a darn at 6 degrees. I reattached the vacuum line and set the
: timing to about 10-12 degrees advanced (with the vacuum advance hocked up)
: and it ran, but not well.( this was the timing setting that made the car run the best, anything either way made it even worse)
: I have a dead spot at idle but other than that it will run fairly well.
: The motor has 105k miles on it on the stock timing chain. Barring my incompatence
: at timing the engine, could the timing chain be shot?
: I didn't think that it would cause that kind of problem but I have been told that it
: could be the problem. Any ideas?