stamina9011

'97 Suzuki GS 500E. It started fine and i rode it about 5 miles, but i felt that the engine needed some revving (dumb) to remove some gunk from the exhaust.. So i started revving it quite hard and black smoke was coming out, and then it just seized and made a horrible churning sound before cutting off all together. Breakdown came out and the guy said that it doesnt sound like an internal engine problem to him, the starter click works when you hit the ignition. I had to push the guy on my bike so that he could hear the sound and he accepts that it sounded horrible, it wont start at all. No sorry, it will tick over but the the churning sound is obviously preventing it from firing up. I changed my first clutch cable ever on this bike and he did say that maybe i did it wrong (although, its been running for miles fine on the clutch i put in, i even did a 400 mile trip to see family with the clutch) and that maybe something was rubbing when i was revving the bike making it worse. He thinks its the starter motor even though it clicks in. I rang an expensively notorious garage near me and the guy said over the phone that it sounds like the cam chain tensioner and that it would cost £400 and that i might need to scrap the bike.. The bike only has 35k on it and its my first.. What do you guys think? Thanks

Rub it down and sand it.. But paint it with what, what worls best? Im a novice, do i need to remove the frame? I can see the rust, it will be awkward to get to but..i can i think. It was an MOT advisory, thanks guys.