Soot, or dry fouling of the plugs is a result of unburned fuel. The causes are (in order of likelihood) 1. Not enough air. 2. Weak Spark. Failed spark plug(s). 3. Too much petrol. 4. Ignition timing incorrect. The main thing to establish is the soot on all plugs or just one or a number. If all, then 1,2,3 & 4. If just one or two, or a bank if multi carbed, then focus on that bank.
probaly the air fuel mixtuer on the carb
Black soot isn't a good sign, one of ur plugs or plug wires must have burnt up. and should be replaced.
Could be time for a tune up, spark plugs, wires, etc.
Change spark plugs and wires... TUNE-UP...
Faulty/fouled spark plugs or spark plug wires. I had this problem and a set of new wires fix it.
2008 and before has 8 plugs. 2009 and up has 16 spark plugs.
Fouling spark plugs can happen when the tip temperature is insufficient to burn off carbon, fuel, oil or other deposits and causes spark to leach to metal shell...no spark across plug gap will cause a misfire. Wet-fouled spark plugs must be changed as they won't fire. Dry-fouled spark plugs can sometimes be successfully cleaned by bringing the engine up to the operating temp.
How do you change the spark plugs (or tune up) in a 2001 Infinity I30
To much resistance in the spark plug wires. Start fresh with a new distributor cap, rotor and spark plug wires. Also be sure you have the correct spark plugs installed.
Disconnect the battery, remove the spark plug wires and covers, and remove the old spark plugs. Next, put in the new spark plugs, attach the covers and spark plug wires and reconnect the battery.
Could be in need of a tune up consisting of replacing spark plugs, spark plug wires, distributor cap, rotor, air and fuel filters.
Put the IROC up on jack stands and remove the spark plugs from under the engine.