New to the site so lets dive right in. I have a 2001 JD 345 with a Kawasaki 20hp l/c with 867 hours on the clock. Last season it started giving me a little trouble. After about 30 to 45 mins. of mowing it would start to miss and lose power. I can choke it a little and it would catch up. I have changed the fuel and air filters, spark plugs cleaned the carb(3x) replaced the TDM, both coils (2X) ignitor box all the fuel lines the fuel pump and the gas cap. Still doing the same thing. So I decided to experiment with vapor lock the other day. During grass cutting it started too miss again so I was going to spray water on the carb to see if it would change anything. I took the hood off and by the time I got the hose hooked up it stopped missing and to my surprise cut for another hour with no problems. When I got done with the grass I replaced the hood and within 5 mins. it started to miss again. I am stumped! I welcome your feedback. Thanks.