Is your voltage output correct before a/c is turned on? If so does it drop drasticly when you turn it on? If this happens check for a short, it may be robbing voltage, and not giving enough power to the ignition system. Don't know if this will help to point in some direction, just a thought.
It might be overfueled but it also might be just that when you turn the key off the motor runs on a bit and puts fuel into the hot exhaust and it ignites it and makes it backfire.
Had turned is the past perfect construction. Use had + past participle to create the past perfect tense.
Have/has turned.I have turnedWe have turnedYou have turnedHe/she has turnedThey have turned
Will have turned.
it depends on which past tense you mean. Preterite: turned Imperfect: turned Past Progressive: was turning Past Perfect: had turned
"had turned" is the past perfect tense of turn. "had" is an auxiliary verb, and "turned" is a past participle.
like dirt that turned into mud in Micheal Jackson face
The unburned fuel is igniting inside the muffler. Let the engine run at idle for 30 seconds before turning the key off.
The past tense of turn over is "turned over."The past perfect tense is "had turned over."
It's lean. Could be something plugged in the carb.
well it all depends on when it is backfiring most of the time on start up if it does back fire then it prob because when you turned it off you had the rpms high and sum gass was mostlikely left in the carb
Mary Poppins