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Old 01-04-2013, 09:43 AM
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TDC on a 348

I have my distr; set on TDC.......To rough start it. just make it run.Which way must the distri; cap be turned?It back fires thru the carb if you turn the distri clockwise but won't hit at all if you turn it ccw, i will get TDC again then .you please tell me which way i should turn this thing. bob s i am back still workin getting this 348 going do i turn the distr; clockwise or ccw first?
ps please explain again how i check for worn timing chain.

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Old 01-04-2013, 10:33 AM
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Quote:
Originally Posted by bsa_bob View Post
I have my distr; set on TDC.......To rough start it. just make it run.Which way must the distri; cap be turned?It back fires thru the carb if you turn the distri clockwise but won't hit at all if you turn it ccw, i will get TDC again then .you please tell me which way i should turn this thing. bob s i am back still workin getting this 348 going do i turn the distr; clockwise or ccw first?
ps please explain again how i check for worn timing chain.
Popping through the carb can be from the timing being retarded, or a jumped timing chain, or a lean air/fuel mixture.

CCW advances timing, and vise versa.

To begin with (assuming it hasn't jumped time) the points have to be adjusted to 0.016"-0.018". You need to have a strong blue spark at the tip of a grounded spark plug when the engine is cranked. If you don't have a good hot spark, get a new set of points and a condenser.

Use some starting fluid. This eliminates fuel delivery as being a problem. Having a helper makes this easier, but it can be done alone. You do not need a big cloud of starting fluid, just a spritz down the throat w/the choke open.

Some engines are very dependent on the choke to start. The spray also eliminated that from being the problem, but the engine may still want some choke to start cold.

Timing chain wear
Install distributor Also see the links under Resources.

Good luck.
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Old 01-04-2013, 02:56 PM
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Originally Posted by cobalt327 View Post
Popping through the carb can be from the timing being retarded, or a jumped timing chain, or a lean air/fuel mixture.

CCW advances timing, and vise versa.

To begin with (assuming it hasn't jumped time) the points have to be adjusted to 0.016"-0.018". You need to have a strong blue spark at the tip of a grounded spark plug when the engine is cranked. If you don't have a good hot spark, get a new set of points and a condenser.

Use some starting fluid. This eliminates fuel delivery as being a problem. Having a helper makes this easier, but it can be done alone. You do not need a big cloud of starting fluid, just a spritz down the throat w/the choke open.

Some engines are very dependent on the choke to start. The spray also eliminated that from being the problem, but the engine may still want some choke to start cold.

Timing chain wear
Install distributor Also see the links under Resources.

Good luck.
well i have my distri; pointing directly at the front middle cap wire. so that part is good. Can a weak coil cause this not to start?It acts like its going to go then nothing The distr; moves in relation,according to the harmonic balancer.so the chain hasn't any slack in it. Damn this is frustrating, i think this motor has so9me little thing wrong thats either corroded over or shorted out something i can't find bob s thank you for the help cobalt


Very informative links that you sent also.
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