Thread: Penny
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Old 03-08-2023, 10:54 PM   #69
cwcarpenter98
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Join Date: Jan 2018
Location: Hickory Flat, GA
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Re: Penny

I did a compression test on the numbers matching 305 today. Happy to report that I have fairly consistent numbers. The lowest cylinder was 145, the highest was 160. Most were around 145 to 150.

What I can infer from that is the misfire is probably not from any stuck valves or piston rings, but rather from something in the ignition system or carburetor related.

Before I did the compression test, I started the engine. It started up ok after a little starter fluid (haven't tried to run it in several weeks) and did seem to want to idle even with the miss, but after maybe a minute of idle time without any input from me, the idle kept slowing down until the engine completely cut off. Not sure what's going on there, but wouldn't be surprised if it's something wrong with the carb that I rebuilt
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Christian Carpenter

1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive
Overdrive wiring here
1963-ish truck bed trailer - Half-Wit

1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed

1995 Dodge Dakota Sport

"I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson
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