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Old 04-23-2011, 09:06 AM
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sbc350 shaky starts then surges and stalls?

Asking about this starting and running problem I have w/mild 350 sbc. I've replaced the spark plugs, they were carbed up bad. Cleaned the fuel filter, bit of crap there. Replaced the fuel pump, oem mechanical , pumps good. I can start the engine ,but then it only runs for a bit and stalls. Plugs look wet. Checked the dist. cap, rotor and coil and all good. I don't use this pick up very much and I do use fuel stabilizer each winter for storage, put bit of new gas in. Is the base timing 10 deg.advance too much for what might be gas too old anyway?. What does old gas look like anyway? Which direction do I turn the dist. to retard it if necessary? Any suggestions are very welcome!

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Old 04-23-2011, 09:58 AM
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Quote:
Originally Posted by bowtie bandit
Asking about this starting and running problem I have w/mild 350 sbc. I've replaced the spark plugs, they were carbed up bad. Cleaned the fuel filter, bit of crap there. Replaced the fuel pump, oem mechanical , pumps good. I can start the engine ,but then it only runs for a bit and stalls. Plugs look wet. Checked the dist. cap, rotor and coil and all good. I don't use this pick up very much and I do use fuel stabilizer each winter for storage, put bit of new gas in. Is the base timing 10 deg.advance too much for what might be gas too old anyway?. What does old gas look like anyway? Which direction do I turn the dist. to retard it if necessary? Any suggestions are very welcome!
Ten degrees isn't too much timing for a mild build, do you have a screen filter in your carb inlet that may be clogged? Try your timing at around 14 and see what it does. You're setting it with vac advance disconnected and plugged, yes?
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Old 04-23-2011, 10:09 AM
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What kind of distributor do you have? Need to check for vacuum leak/leaks.
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Old 04-23-2011, 10:12 AM
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If this has carburetor you may have a choke that is not opening properly or a pull off that is not working.
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Old 04-24-2011, 08:18 AM
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New guy here again , most recent checks are...

Thanks for your engine starting problem tips. I cleaned the in line screen filter and there wasa little dirt in it. The edelbrock 600cfm square bore choke is in good working order and set to carb manual specs.
Yesterday I checked the spark and its orange and maybe small. Shouldn't this HEI spark w/ aftermarker MSD coil be blue and fat?
The fuel delivery is very good. The hotwire to the distributor is 12.43 volts w/
ignition switch on.
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