Hey everyone. Workin on my kids 90 predator. Im stumped. Ran great the 2 yrs we have had it. Last week it went down hill. Wouldnt stay running and just popped and spuddered. I put a brand new carb, air filter and plug on it. Now it fires right up and idles. As soon as u try to drive it, it spudders and pops and doesnt move. Any ideas? Thanks

 

See what the compression reading shows.