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Old 03-20-2010, 05:56 PM
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Turns over, doesn't start/Firing order

350 Pontiac. I've just replaced the points, cap and rotor. Couldn't gap the points without removing whole distributor, and I didn't want to hassle with that. So i set the points as close as I could to what the originals were and replaced them. I have the firing order as (1-8-4-3-6-5-7-2) and I know that the rotor spins CCW.

So, we identified the number one cylinder as being the 5-oclock terminal on the distributor, if the adjustment door is at 6 o clock of course. However, we placed the wires in a CW patter, instead of CCW. After doing this, the engine would turn over, but only backfire, with an occasional regular combustion in one of the cylinders.

Realizing our mistake, we rewired everything CCW, and changed the number one terminal to the 4 o clock position, on a hunch and an educated guess. Now, the engine cranks quickly at first, but then bogs down with serious hesitation, as if with excessive compression. It repeats this with a couple cranks which are quick, followed by struggling loping cranks. And no backfires as of yet from this set up.

Does anyone know for sure which terminal on the cap is the number 1? We've narrowed it down to either 4 or 5 o clock.

Thanks everyone,
Matt

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Old 03-20-2010, 08:30 PM
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turns over, don't start?

remove #1 plug, place finger in #1 plug hole, have someone turn the engine over and stop when it blows finger from hole. Now remove the cap (dist.) and see where the rotor is pointing. I beat thats # 1 where ever it at one the clock, recheck to confirm location (don't have to reinstall the cap)
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Old 03-20-2010, 08:33 PM
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Quote:
Originally Posted by lanierledford
remove #1 plug, place finger in #1 plug hole, have someone turn the engine over and stop when it blows finger from hole. Now remove the cap (dist.) and see where the rotor is pointing. I beat thats # 1 where ever it at one the clock, recheck to confirm location (don't have to reinstall the cap)

Better turn that motor over by hand, not w/ the ign.
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Old 03-20-2010, 09:50 PM
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Distributor turns clockwise, normally #1 is at 5 or 7 o'clock.
Setup # 1 by pulling # 1 plug, put finget over hole, bump key until it starts to blow your finger off the hole. Bring timing mark up to tdc, pull cap and the rotor should be pointing to #1 plug tower. If it isnt you will need to pull and reinstall teh distributor.
You will need to gap the points with a feeler gauge if you dont have a dwell meter. Guessing wont work. Set them to .017-.019 and that should be fine.
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Old 03-21-2010, 09:30 AM
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turnning over or setting the timing?

Turning over by hand is so slow, it won't build compression. Just don't put yourself in the fan. I did forget to turn it on to tdc by hand. If you have a timing light, after setting the wires in the right firing order, hook it up, set the timing on the degrees you want and with the switch on move the dist. until it flashes the light,( move it slow) It should put you the third base position, headed for home
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Old 03-21-2010, 02:00 PM
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We originally used the method of feeling for compression with a finger, but for some reason, TDC is very far off from where we deduced the #1 to be. In fact it's almost directly across from the #1 terminal.
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Old 03-21-2010, 02:30 PM
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won;t start?

Matt, pick the dist. up and turn it 180 degrees and it'll be on
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