97 25hp suzuki cooling

[willcastleman]

I have a 97 25hp suzuki. Water comes out of the exhaust really well in a forward motion of the boat.. The water coming out is extremly hot. the motor is not what I call "peeing" from the regular side hole. Is this something to be concerned about what should I do to try and correct this.. I want to use this boat as my duck boat but dont want to get stuck out in the marsh... if so I will still to the old faithful merc... I own both moters. Never had a suzuki, but my dad has and it is the best motor I have seen.. Any help would be great please email @ willc@bones.dns2go.com or post

 

[rodbolt]

Re: 97 25hp suzuki cooling

hello<br /> could it be possible its time for a water pump and a thermoatst? when was the last time they were serviced? take a wire, like stainless leader wire and run back up the tell tale hole. they clog easily. the water from the idle reliefs will be warm due to its discharge from the t-stat. but it should not be really hot.<br /> good luck and keep posting

 

[willcastleman]

Re: 97 25hp suzuki cooling

didnt know they had a thremostat. Is that a hard part to change.. I sprayed carb cleaner in the tell tale hole and it did start "peeing" but it is a slow stream, but it is on the muffs. I did purchase a new water pump, but have installed yet. Where is the thremostat located so I dont have to do the job again.<br /><br />THanks

 

[rodbolt]

Re: 97 25hp suzuki cooling

hello<br /> look for a casting held on with three bolts at the top of the cyl head. if the bolts come out its behind that casting. if the t-stat is missing it can account for low water pressure.<br /> good luck and keep cool

 

[Ellis Sher]

Re: 97 25hp suzuki cooling

Originally posted by rodbolt:<br />hello<br /> could it be possible its time for a water pump and a thermoatst? when was the last time they were serviced? take a wire, like stainless leader wire and run back up the tell tale hole. they clog easily. the water from the idle reliefs will be warm due to its discharge from the t-stat. but it should not be really hot.<br /> good luck and keep posting

 

[Ellis Sher]

Re: 97 25hp suzuki cooling

Hello Rodbolt,<br />From your input, it seems you are the true oracle. I saw your reply to the question regarding the 97 Suzuki cooling problem. My question was a similar one for my DT30. Is water supposed to come out of one hole or two, and if only one what is the other for? Please assist if you can. Thanks

 

[rodbolt]

Re: 97 25hp suzuki cooling

hello<br /> Elis Sher<br /> the DT 30 has an idle relief hole at the very aft end and below the engine. it also has a water pump tell tale on the lower starboard side aft. the suzukis were among the worst for clogging the tell tale ports. I think 3 grains of sand will do it. the suzuki should have an overheat indicator or alarm. most had a red LED for oil and would go into RPM reduction if over heated. what is your problem? is it just a loss of the indicator flow? when was the last impeller/t-stat service?<br /> good luck and keep posting

 

[Ellis Sher]

Re: 97 25hp suzuki cooling

Originally posted by rodbolt:<br />hello<br /> Elis Sher<br /> the DT 30 has an idle relief hole at the very aft end and below the engine. it also has a water pump tell tale on the lower starboard side aft. the suzukis were among the worst for clogging the tell tale ports. I think 3 grains of sand will do it. the suzuki should have an overheat indicator or alarm. most had a red LED for oil and would go into RPM reduction if over heated. what is your problem? is it just a loss of the indicator flow? when was the last impeller/t-stat service?<br /> good luck and keep posting

 

[Ellis Sher]

Re: 97 25hp suzuki cooling

Originally posted by rodbolt:<br />hello<br /> Elis Sher<br /> the DT 30 has an idle relief hole at the very aft end and below the engine. it also has a water pump tell tale on the lower starboard side aft. the suzukis were among the worst for clogging the tell tale ports. I think 3 grains of sand will do it. the suzuki should have an overheat indicator or alarm. most had a red LED for oil and would go into RPM reduction if over heated. what is your problem? is it just a loss of the indicator flow? when was the last impeller/t-stat service?<br /> good luck and keep posting

Hi Rodbolt,<br />If there was a "outboards for dummies" book, I probably wouldn't understand it. Please bear with me. If I approach the motor from the propeller side (aft?), there are two holes just below the powerhead, about 3/4's up the shaft, above the water. As far as I can make out, the exhaust vents through the propellor. In running, water pees out of only one of the abovementioned holes. I think this is what you are referring to as the water pump telltale. The other hole next to it has what appears to be carbon from the exhaust. Is this the idle relief hole? If this is blocked, how do I unblock it. There are no led's, red or any other colour to indicate overheating, nor have I noticed any alarm. There does not seem to be any loss in RPM in running although the motor does not idle. I reached a speed of 40Km per hour, (measured with a GPS) which was constant. The water pump and impeller were serviced/replaced in 2000 at the same time as the plugs. The carb was also cleaned and balanced. The motor has not run since then. My problem is the carbon blowing from the one hole, which wouldn't really worry me if the local repair guys (including Suzuki) could give me an explanation. One fellow reckons there is a hole in the jacket, another reckons he'd have to open her up and check the cylinder head gasket, the third couldn't or wouldn't say anything other than it would cost me a grand to check it out and find the problem. Thanks for your help.

 

[rodbolt]

Re: 97 25hp suzuki cooling

hello <br />Ellis sher<br /> the two thumb sized holes at the very back (aft) about 5 inches below the motor are idle relief ports. they carbon ub. will the motor idle on the flusher when not in the water? the idle relief ports allow exhaust gas at idle speeds to exit the power head.<br />look on the forward port side of the motor for a small pen sized LED in a rubber cap. that will be the oil alarm indicator if this motor has one. suzuki international motors were very differnt from USA motors sometimes.<br /> the water pump tell tala hole is about the size of a pencil lead and should be just below the cowl on the starboard side.<br />if your having running problems please start a new post. my poor brain gets confused. its either CRS or old age. I cant remember which.<br />good luck and keep posting