1952-59 Ford black spark plugs

Hey guys I think carb is a little rich spark plugs were pulled and were covered fluffy black what can I do to fix this the carb was rebuilt a year ago and I put in new plugs 6 months ago In just running a stock 52 flatty with one holley 94

 

A little rich...?

Okay. Check the power valve. Chances are it's either blown or leaking and causes the car to run very rich. My old shoebox was doing the same thing when I bought it. The PO was a mechanic and he couldn't cure the problem so he sold it to me out of desperation...cheap!

Good luck!

 

check the power valve. also make sure you got enough voltage to your coil.

 

I got a new coil in it. the car runs good idles ok doesnt hesitate has good pickup and never stalls starts up good . but I will check power valves I had a guy rebuild it for me should they have changed the power valve when they rebuilt it?

 

should i replace with stock pwer valve or something else i see guys using different sizes

 

Yes, it will run reasonably well with a leaky power valve, but will show evidence of excess fuel consumption...black plugs, black tail pipes, rich-smelling exhaust odor and poor fuel mileage.

At idle, the motor will be relatively insensitive to idle-adjustment screws. It will run about the same no matter how you adjust them because it is getting enough fuel from the leaky power valve to feed the engine at idle.

The power valve is a vacuum-sensitive enrichening device. It is inside the carburetor beneath the float bowl. The power valve is replaced routinely when the carb is rebuilt.

If the motor is stock, replace with a stock power valve. Don't try to over-think the problem. There is no advantage to using a non-stock power valve on a stock motor.

If I were doing this again, I'd shop around for an ethanol-resistant carb kit with an ethanol-resistant power valve. Might be hard to find for a 94, so this might become a preemptive yearly maintenance operation.

Here's a great article on the subject: http://www.streetrodderweb.com/tech/0510sr_holley_94_vintage_carburetor/index.html

Good luck!

 

thanks for the advice much appreciated

 

put carb back together today with new power valve from vintage speed started right up no leaks now gonna change out spark plugs and see if they get dirty again hope this does it