4 things could cause that problem. Timing slipped so the intake valve is still partially open when cylinder fires , Intake valve is sticking slightly open, rocker arm is too tight and holsding valve slightly open and finally, a burnt intake valve valve allowing combustion gasses to blow back. Most likely is a timing slip or valve lash on the intake valve is too tight .

Craig's list can be a great source if you can pick up your purchase in person and be paid in cash for sales. be wary of cashiers checks, bank drafts and of course personal checks. Both bank drafts and cashiers checks can be fakes . My sister found out the hard way that a bank draft can be a fake that a bank will cash and then a week later find out from the clearing house it is a fake and charge back your account. Bye bye item , bye bye money and if payment was in foreign currency you end up losing even more because banks charge a fee to convert the currency into your dollars and you don't get that back when they charge back for the fake

You notice how most of the scams are Gmail addresses? I actually never use craigslist, too riddled with scams and people fishing for information. Mike

We had a chance for a quick ride on Friday at the local state trail before the rain came in.