I’m nearing the point of putting my ‘60 Lark wagon back on the road after being parked for nearly 25 years. It has 54,000 original miles. I have done an engine reseal, installed new dual exhaust, and bought one of Jeff Rice’s 4 barrel intakes. I’m using a new Edelbrock 500 CFM carb.
It has a fresh tune on it, and it runs very well with a smooth idle and acceleration. As part of the tune I decided to run a compression test on all 8 cylinders since I had the plugs out. I’m getting 120 to 140 on all cylinders, except for #3 which tested about 75 pounds.
The exhaust does smoke a bit. Since it’s running well overall, I’m not suspecting leaky valves but rather stuck or worn rings. Am I on the right path?
I’m hoping once I start driving it regularly the rings will loosen up and it will smoke less and the compression in that one cylinder will improve.
Would any fuel additives help things out, like some Marvel Mystery Oil in the fuel? Or straight down the carb? Or just drive it and watch the oil and see what happens?
Thanks for your opinions.
Michael
It has a fresh tune on it, and it runs very well with a smooth idle and acceleration. As part of the tune I decided to run a compression test on all 8 cylinders since I had the plugs out. I’m getting 120 to 140 on all cylinders, except for #3 which tested about 75 pounds.
The exhaust does smoke a bit. Since it’s running well overall, I’m not suspecting leaky valves but rather stuck or worn rings. Am I on the right path?
I’m hoping once I start driving it regularly the rings will loosen up and it will smoke less and the compression in that one cylinder will improve.
Would any fuel additives help things out, like some Marvel Mystery Oil in the fuel? Or straight down the carb? Or just drive it and watch the oil and see what happens?
Thanks for your opinions.
Michael
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