hey i have been having problem my car when trying to start its backfiring back out the intake when u hit the gas. I tried changing tps, map sensors, compression tested is 18o across timing is good, fuel good, but the spark is weak it won't even start with starter fluid. I brought a main relay from Honda and it ran good all day and then just cut off. i changed the distributor and it fire up but was breaking up thru the rev range and then just cut off. i brought another one no fire brought another one weak spark brought another one no fire what should i do.