Was running but starter was going bad. Replaced starter, and now it won't fire. I have tried starter fluid and gas, won't fire at all. I have spark, compression. I thought it was bad fuel, drained tank and put in fresh gas. Fuel is pumping from tank to carb. I switched out carbs, as I had a new in box car. From when I bought the Cart. Still nothing, I'm guessing timing, but I haven't touched that and can't figure this one out. ANY suggestions appreciated.