Re: overheated 4 stroke honda 35 horse jet
Hello Zach,<br />There are a couple of marine pro's out here that might give you a better answer, until then I'll give you my spin. And, not always, on the oil in water question.<br />It's a little unclear if you overheated before you hit the sandbar or after.<br />I'll assume it was after since you were purging sand from the cooling system.<br />Since I own a '02 Honda50 jet, I'll absolutely hate the day my jetpump is packin'sand,rocks,and other river bottom. <br />I don't have an answer why the starter isn't working yet you can turn it over by rope.<br />However, it may be possible that the major damage is elsewhere instead of an overheat. Usually a 4 stroke overheat with damage would be evident with smoking, blue smoke for oil burning from scored pistons/cylinders or steam from headgasket/warpage. Along with rough running denoting compression loss. You didn't mention these symptoms.<br />You have mentioned noises and a lack of power along with a rough spot while rotating the engine.<br />It's important to remember your jet doesn't have a nuetral like prop jobs do. The pump spins anytime the motor spins. Imagine the jetpump sucking buckets of sand and debris through the impeller and cup. This alone can DRASTICALLY reduce your power. The stiff place your feeling AND the noises your hearing may be that very damage to the pump. This damage will be a given if you sucked river bottom.<br />As far as the overheat. There's going to be a lot of debris hanging around the stat,impeller, and jackets. This will have to be dealt with along with the jet. However, while you may have been running hot, you may not have overheated. The smoking will be the telltail, along with a compression test, although a cylinder leakdown test is a more valuable diagnostic tool. Excessive blowby from the crankcase is easy to check also. <br />Maybe just maybe, a cooling system clean with a stat and purge, a valve adjustment/oilchange/tune ,along with a new impeller/cup (stainless is the only way to go), you'll be running the riffles again.<br />Oh, and that wire (to the starting circut)that got pulled off during your unintentional dredging.<br /><br />My Honda has an overheat alarm AND a "limphome" feature if the engine overheats, did they not have that on the '97?
