95 Vrf750 Will Not Start And Backfires???

My 1995 vfr 750 will not start and backfires when trying to start.
The start is turning the motor.
I have emptied the gas and put clean gas in.
Put a new fuel filter on.
Cleaned the carbs as per the shop manual.
Checked to make sure the fule pump is working, it is.
I am at my wits end. Any Ideas?????

Thank you in advance,
Sick454

 

Backfire is usually a timing issue. With gear driven cams this seems unlikely... Have you checked the plugs to see if your getting fire? It has to be one of 3 things: 1. Air 2. Fuel 3. Fire

 

GOT IT... Thanks for the assistance. I pulled all the plugs and cleaned them the other day and they were fine. Today I got froggy and decided to replace them. And BINGO!! it fired right up.
Thanks again VFRWorld

 

Good check, was going to say pull the plugs good to hear you beat me to it. yea not much there that would make her cough, other than what you found.