Carbon deposits on valves Question

[lorenzo26]

What can i use to keep carbon free the intake valves and pistons on a T engine ?

[Mark Gregush]

Might depend on what type of deposits they are; oily or dry. Oily would be oil getting past the rings, dry would be running rich. Helps to run the motor up to temperature. Running too cool the deposits can't burn off. Unless they are really bad, not going to hurt anything. More information would be needed for people to help, like how bad and what type. There are going to be some deposits, it's the nature of the beast.

[TXGOAT2]

The best remedy, assuming the deposits are excessive, and that the engine is in good to fair condition, would be to take the car out for a nice drive, 20 miles or so at mostly road speeds, such as 30-35 mph. No need to hot rod it, just get it out on the open road and run it. Another thing that can be helpful is to add a pint of Sea Foam additive to a full tank of fresh gas and go for an extended drive. Proper carburetor adjustment and proper use of the spark control will help minimize deposits, as will avoiding needless idling and extended driving at very low speeds. If you do have situations that involve a lot of idling and very low speed driving, such as participating in a parade, show, etc, taking the car out for some open road miles at the next opportunity will probably remove any excess deposits, assuming the engine is in good to fair shape. Fresh gasoline and clean oil in the crankcase help reduce deposits. Minimizing very short trips, especially in colder weather, helps prevent carbon formation and crankcase sludging and or oil dilution.

[lorenzo26]

They are dry, i have water pump and it runs cool i have to block radiator to get a reading in the cap meter i was thinking that did not help im thinkig thermostat...
thank you all for input

[Mark Gregush]

If it is running cool with the water pump, take if off and go back to stock unless you are running a hot water heater. I am not one of the anti water pump people, there is a time and place that they do help.

[Adam]

What can i use to keep carbon free the intake valves and pistons on a T engine ?

You have to start with everything clean, then use detergent oil and those deposits won’t form unless something is seriously wrong.