3hp eveinrude run without water!!!

[what66]

HI I just got a 3hp evinrude and I did all your suposed to do before runing it.<br />I cleaned the card checked the water pump it was fine I start it and it runs for a while then it overheated and sized it would not move <br />after it cooled down it turns again but I don't know if I destroyed it or not I just got this motor I hope I didn't fry it. <br />do you think it will be ok if it will still run?

 

[DHPMARINE]

Re: 3hp eveinrude run without water!!!

My guess the water pump wasn't fine.How did you check it?Seizing motors is never good,so you need to know why .If it's an old twin cylinder,you may still get some use out of it.More tolerance in old motors.<br /><br />You are mixing oil with gas ?<br /><br />DHP

 

[reeldutch]

Re: 3hp eveinrude run without water!!!

you cannot never ever run an outboard with out water.<br />thats why your motor overheats<br /><br />retorqe the cylinderheads and squirt some tcwIII<br />into the sparkplug holes.and turn the flywheel to lube the walls up.<br />should go easy with the plugs out.(and waterpump impellor burned.<br /><br />if you did run it without water replace the waterpump before you start it because chances are waterpump impeller is melted.<br /><br />if you did run it with the mufs on or in a barel and it still overheated replace waterpump and tstats, waterdeflectors.<br />make shure all the passages are open.<br /><br />and i think after your motor seized up you should do a compression check also to see if everything is well.<br /><br />good luck

 

[what66]

Re: 3hp eveinrude run without water!!!

what I ment to say it was runing it the bucket with water it was not pumping but i got it to run and it seems to be pumping now. <br />its a 1951 twin I'm going to get a new pump I think it survived.but I droped my flush scew in my barrle ok water

 

[what66]

Re: 3hp eveinrude run without water!!!

oh and i'm using 24to 1 twc oil and gas

 

[Paul Moir]

Re: 3hp eveinrude run without water!!!

A '51 should be a 3.3hp? If this is a '52- 3hp there's something I think you should check out.

 

[what66]

Re: 3hp eveinrude run without water!!!

I'm gust gusing on the 3 I just looked it up it's a 52 3hp.

 

[Paul Moir]

Re: 3hp eveinrude run without water!!!

Hard to kill a 3hp!<br />Anyway, there's two parallel cooling circuits on the 3hp engines and often one will get blocked while the other flows freely causing overheats. Have a look at this diagram:<br />

<br />Most of the cooling water follows the blue line but some is let into the jacket around the cylinders & head (red) through a pair of drilled holes. The bottom one can't be seen from that angle, but it's on the bottom of the lowest point of the water jacket, a little to the left. It's acessable from the bottom of the powerhead too.<br />Those holes sometimes get blocked and the waterjacket overheats. You wouldn't know about it since you'll still see plenty of water coming out the idle relief holes. If the head seems to be getting very hot, this is likely blocked.

 

[what66]

Re: 3hp eveinrude run without water!!!

thnks for the info I will check and make sure it's cooling right.<br />It still runs good and I think it's cooling now there is water comeing from the tale tales and i can touch the head whell it's running I will put a new carb kit on it and a new pump .<br />This is a nice little motor I only paid $40 for it. <br />It had bad gas in it and had some water in the lower unit but with a little care it is alive once agin thank you for your help.<br />do you think flushing it would clear any clogs?

 

[Paul Moir]

Re: 3hp eveinrude run without water!!!

Like I said before, even if it's clogged you'll get good tell-tales due to the bypass circuit.<br /><br />The engine's a steal at $40. If you've never had one of these before, they're great little dependable eggbeaters. They used the same basic design up into the '80s with a fairly large change in '69 when they rerated it to 4hp.<br /><br />I don't know about flushing clearing any clogs, the engines I work with are all salt-water engines, and the clogs grow into massive rock-like calcium deposites which must be cleared with a drill bit. 'Course that means removing at least the powerhead and the exhaust cover for access, although I usually remove the head as well.

 

[what66]

Re: 3hp eveinrude run without water!!!

well I thought I'd bring you up to date it runs great <br />I have used it for many trips now and it works great.<br />Ithas saved me from rowing allready.<br />thank you guys for the help this is a great engine.

 

[rwcreigh1]

Re: 3hp eveinrude run without water!!!

you did put a new pump right? call me crazy but i replace my pump every 3 years.