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Waste of bandwidth
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10,618 Posts
Discussion Starter #1
I finally got the fuel line problems worked out on a 1939 9N. It runs fairly smoothly but, when it's warmed up and running at a fairly high RPM, I hear what I think might be minor backfiring. Not a pop, more of a "bomp" -- very muted.

The guy that owned it said, "Oh, it's always done that."

Is it normal? I'm wondering if I should bother replacing sparkplug wires, taking the distributor of to replace points and condenser, etc. if the minor noise won't get any better.
 

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Hello, hello....is there anybody in there.....?
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78,606 Posts
A tune up couldnt hurt. If YOU were born in '39 , youd probably "bomp" once in a while too!
 

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agmantoo
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10,852 Posts
Those old Fords did not have much of a distributor advance and what they had worked poorly. That said, the engine will not run across its speed range with the timing optimum. The noise could be a firing of a plug a little late or early when a valve is not fully closed. I would leave it alone, particularly if it starts good as is.
 
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