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Old 09-13-2005, 12:56 PM
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Hard Start

I have a 283 SBC(old points distributor) that acts like the ignition is far advanced but when I manually retard it there is not a change. When the motor starts it acts very sluggish. So far I have rebuilt the carburetor(Holley 600 CFM) and put in new points, condenser, rotor and coil.

I have been thinking that maybe the mechanical advance is stuck. Any ideas on the problem?

I know that it would seem easy to pull the distributor to check the advance but the 283 is in a Model A and with the engine set back the distroburor will not come out without pulling the engine or at the least taking everything loose so that the motor will come far enough forward to clear the upper firewall.

Am looking forward to your ideas.

Thanks

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Old 09-13-2005, 03:41 PM
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how about putting a timing light on it to see what the timing is. The mechanical advance on that distributor is right on top. If you pull the cap you will be looking right at it. You say it is sluggish. Does that meen turning slow, perhaps the starter is no good.
Check the timing first
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Old 09-13-2005, 08:03 PM
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Hard start

By sluggish I mean when it is running and you jump on it it doesn't rev fast. The accelerator pump seems to be giving it a good shot because it won't bog, just seems to lay down.The starter is good. The hard start problem is that the starter turns the motor over, seems to hesitate, than turns over again. It does this(hot ot cold) three or four times and than starts.

I just happened to think that if because it won't be fighting the timing
I pulled the coil wire off and go to start it it should turn over fast.
I will check it out tomorrow and let you know what happened.
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Old 09-13-2005, 09:33 PM
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Timing

Doc here,

Sounds like your timing is way too far advanced...that far it should detonate (ping) when you romp on it.

Set or check your timing with a good light..I forgot on a 283 it's been years...but 8 to 12 degrees static should be a good start. (unhook and plug the Vacuum advance while setting it)

Next set the points for about 17 thousands and inspect for pitting or arc over.

Get a Dwell meter, set your dwell for between 18 to 31 on the meter.

Check the capacitor, to check, simply disconnect it..run it, ... does it run better?..If so, get a new cap..Hell, there only about 2 bucks anyway, I'd just get a new one..

Check to be sure you have an ignition resistor in circuit..measure the power side of the coil WITH the POINTS closed or jumpered to ground..with the key on, it should read 6 to 9 volts..with the points open and / or unjumpered it should read 12 volts. If you don't have a resistor, your coil may be failing, replace it and install a proper resistor.

Finally, check your coil for reverse polarity Power to + and points to - side..

Doc
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Old 09-15-2005, 08:13 AM
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Hard start

Thanks for the info - I checked the advance out and it was sticking. I pulled it apart, cleaned it reoiled it(lightly to prevent rust)and put it back together.
I retimed it and it runs good.

Thanks again.
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Old 09-15-2005, 08:05 PM
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Thanks!

Doc here,

Thanks for the reply back with the Fix..It will help the next Guy!

I kinda thought it sounded like an Advance/ Timing issue..Glad to hear it was cheap and easy to fix..

Back on the road again..

Doc
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