WebExhaust fumes are heavy and black. Spark plugs are black and sooty. Spark plugs are wet with fuel. The engine runs better when it’s cold. Worse gas mileage. Acceleration is … WebJun 14, 2016 · So, I recently changed the plugs on my 2002 bonneville and noticed the left cylinder plug was black with what looked like soot on it. I put in some iridium plugs and haven't checked them since but what does that suggest? Running too rich? Any recommendations? Also, fuel economy seems lower than expected, even with the air box …
The main reasons why there are the black sooting of the spark …
WebFeb 27, 2024 · Check for dirty or clogged filter cartridge.3. a) Remove filter cartridge in order to purge the air lock from the circulation pump intake. b) Hold a garden hose over filter … WebThe spark plug has a metal threaded shell, electrically isolated from a central electrode by a ceramic insulator. Spark Plugs Fit Stihl 2-Cycle Trimmers, Chainsaws, Hedge Clippers. … flight credit cards reddit
Running Lean vs Rich: Tuning & Diagnosis Tips
WebSep 18, 2008 · Gumout claims their booster can increase your octane by up to 5 points. In other words, it'll change 91 octane to 91.5 octane. However, 16 ounces of Toluene, the active ingredient in Gumout, only raises a typical 15 gallon tank of gas by 2-3 points. So, you're probably lucky to go from 91 octane to 91.2 octane. WebDec 20, 2012 · Appearance & Symptoms: Dry fouling (top) appears as sooty, black build-up. Wet fouling (bottom) has a wet, sometimes oily appearance. Both conditions can create poor starting and misfiring. … WebSep 21, 2024 · #1 Hello I have a Tiger 885-98 as it gets very sooty on one spark plug, cylinder 3. If I change the spark plug to new it goes well for a while then it is the same … flight credit card cash back