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Old 02-02-2002, 02:34 PM
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Post Rich mixture problems??

I have a 1965 Plymouth 273 V 8 engine. I have checked the carb and have all the specs correctly set inside and out. I have checked for vacuum leaks and have found none. New pvc valve. The car starts and runs great but I am getting some black smoke coming out of the exhaust pipe most noticable when the car is idleing. Any ideas???

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Old 02-02-2002, 07:39 PM
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Jim,

How long did you let your car warm up for? Is your choke still on when this smoke starts? If it runs good, i think i would go for a good drive, get it up to temp and then check the colour of the plugs. If they look OK at normal temp then i wouldn't worry about it.

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Old 02-02-2002, 07:40 PM
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Just thought of one more thing... make sure you have a clean air filter.

JB
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Old 02-02-2002, 08:29 PM
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[quote]Originally posted by johnnymopar:
<strong>Jim,

How long did you let your car warm up for? Is your choke still on when this smoke starts? If it runs good, i think i would go for a good drive, get it up to temp and then check the colour of the plugs. If they look OK at normal temp then i wouldn't worry about it.

JB</strong><hr></blockquote>
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Old 02-02-2002, 08:33 PM
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[quote]Originally posted by johnnymopar:
<strong>Jim,

How long did you let your car warm up for? Is your choke still on when this smoke starts? If it runs good, i think i would go for a good drive, get it up to temp and then check the colour of the plugs. If they look OK at normal temp then i wouldn't worry about it.

JB</strong><hr></blockquote>

The warm up time is 10 minutes. The choke is on during the warm up. I blocked the choke open to see if that would stop the black smoke but it didn't. The plugs and tail pipe have a black residue on them.
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Old 02-07-2002, 02:36 PM
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jim, i think it might be an ignition issue. check your coil and wires. Are they original? They may need to be replaced. Or, you may just need new plugs or hotter plugs.

JB
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Old 02-25-2002, 09:02 PM
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I just wanted to let you know you were exactly right about the black smoke problem I had with the 65 plymouth. I replaced the worn out points with a pertronix ignition module, set the timing, and replaced the ignition wires with the pertronix flame throwers which have 10 times less resistance than the old wires. The car runs much better, starts much faster, and no black smoke coming out of the exhaust. Thanks for getting me out of the it had to be a fuel system problem mode.
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