Your timing is to far before top dead center you need to advance it turn the distributer foreward.
Advanced timing is when the spark plug fires AFTER Top Dead Center, retarded timing is when it fires BEFORE TDC.
You will get pinging if you advance it and you will loose gas mileage and power if you slow it.
Usually because the timing is too retarded.
Timing is off on 1 bank of engine.
Variable Timing Electronic Control. Meaning the timing is advanced/retarded electronically by the computer when needed ie. you stomp on the gas pedal and the timing changes to compensate.
A stretched timing chain on a DOHC engine will cause a retarded intake camshaft timing and a slightly retarded or normal exhaust camshaft timing. The intake cam will take most of the stretch, leaving the exhaust cam mostly normal. The results of a retarded intake camshaft will be improved fuel economy due to less air-fuel drawn in during the intake stroke. Also, IF the exhaust camshaft is retarded from excessive timing chain stretch the result will be a lower NOX emissions due to exhaust gas being drawn in during the intake stroke, lowering the overall combustion chamber temperature.
May be possible the timing is too far retarded. If this is the case, there will not be complete combustion and you will get smoke. Try to advance it a couple of degrees.
Timing way retarded.
Perform a tune up and check timing, it may be retarded too far.
yes, backfiring is always due to ignition or timing problems. Backfiring through the carb can be a symptom of a lean condition.
You can but your ignition timing and cam timing, if you have adjustable cams will be retarded to stop detonation. Fuel economy and performance will drop.
Either the timing is excessively retarded or you have a worn camshaft or related problem.