Questions & Answers for: spark plugs yellow blue

...spark on all 4. i have changed plugs and checked leads, still not starting.... Hi and welcome to FixYa, Initially, a couple of checks when starting: verify consistent + 12 on the black/white wires on ...

...x yellow/green wire to ground on battery 1x red from starter motor to right hand solonoid,and thats it atv should run ,,,, the only problem i have now is the spark from the spark plug ...

...Spark Plugs should be changed about every 3 to 4 years regardless of miles. Wires should be replaced every other Spark Plug change. Translated you should be on you 3rd set of Spark Plugs and 2nd set ...

...spark plug are yellowish instead of bright blue on 1988 corolla fx 4ca engine. might be a bad coil, are all the sparks yellow or just one. all yellow check the coil, one yellow check the wire and ...

...smook Probably engine is misfiring. Check spark plugs and wires. Check distributor cap and rotor. Check spark at plugs. Should be a blue spark and not yellow. A yellow spark is weak ignition

...spark plugs and wires? Are the coils giving STRONG blue/white spark, or a weaker yellow/orange spark? Are the wires arcing (try running the car at night with no lights and look for sparks around the ...

...out, connect the spark plug wire and ground the plug to the motor and see if you have spark. If you have spark (bright blue) then it is a fuel problem. A yellow spark is and indicator of a coil

...by bad or worn piston rings, or valves not sealing properly. When you check spark to #1 it should be a nice blue color not yellow, yellow is a weak spark and doesn't fire properly under ...

...spark plug coil assembly to which I should connect the signal wire of a Tachometer to. The wire colours are, red, yellow, green/white, and blue. I need to see an electrical diagram of the coil ...

...spark plugs I repace coils and wires to the plugs but not sure if I have them in the right order This engine layout is known as a 'Twin Spark'. Basically there are 2 spark plugs to each of the two ...