1971 evinrude probs

[danny_walton2000]

I have a 1971 60hp evinrude model number 60173 C. It wont start, when it does start it only runs at half throtle or full. If i take it down to idle speed it dies. I do not know what the speed screws are suposed to be set at. Plus some more info, has new plugs, new wires. It wont even start unless I put the throttle lever wide open and pull it back to the start position to just where it engages the starter so that the butterfly is just barely open. and i think the timing might be a little off. Is there any way to adjust this? I'm hoping to have it running by Sunday because it is me and my wifes wedding anniversary and i bought this thing cause she wanted to learn how to ski. So therefore I will be checking back for any help I can get very very frequently. Thank you.

 

[djzyla1980]

Re: 1971 evinrude probs

First get a manual...<br />Then I'd check Compression should all be in range with each other<br />Then check to see if your getting spark in the "start position" If you are, check it to make sure your getting enough. I believe it should jump 7/16 with fat blue spark on tester. <br />If that checks out look at fuel. While trying to turn over spray some premix into carb throats or pump the primer bulb. If it' fires up then your not getting the fuel you need. Start with fuel lines, look for leaks or blockages. If all else... look at carbs.. Might be time to do a rebuild.<br /><br />update results...

 

[danny_walton2000]

Re: 1971 evinrude probs

I checked spark and im getting plenty of that. The fuel thing is kinda weird. When i spray stuff in it it tries to fire everyonce in a while. Sometimes it seems as though its getting plenty and other times it as if its not getting enough. When it starts it runs great at half throtle or full throtle but at idle it dies and harder than heck to restart. usualy have to let it sit for about 30 min or more to get it to try to start again.

 

[djzyla1980]

Re: 1971 evinrude probs

If you have the ability to run a compression test... Do that. Then we'll all know the state of your motor. If your getting good spark how do the plugs look?? Are they moist with fuel??? If Comp looks good and you have good spark, look at the fuel supply. Look for leaks, plugged lines,etc. Does the bulb prime up hard? you might just have a stuck float. try tapping on the outside of the carbs to see if it will drop down. If all lines check out... I think it's time for a carb rebuild.

 

[danny_walton2000]

Re: 1971 evinrude probs

The carb cover was kinking the fuel line to the bottom carb. i took the cover off and put new lines on, new fuel line and pump bulb. the bulb on the line that goes to the tank does pump hard. the plugs were moist with fuel after i fixed all that. It finally started and i ran it for about 5 minutes before it died. I had to run it on a fast idle and it was making a poping sound as it ran but then started smoothing out. I messed with the idle screws untill i could get it to run with the throttle lever at the start/idle position. Finally after about 3 minutes of runing it started runing really smooth except at a real high speed. I then idled it back down and it was idling smooth for about a minute and a half, then died. Wont start again yet. Thank you all for all the help. I really dont want to have to buy a new motor just because I cant figure out this one, lol.

 

[djzyla1980]

Re: 1971 evinrude probs

Are you using known good fuel with proper mix and water free? How About doing a Compression test? Knowing these numbers will inform us if your loosing Comp in one cylinder. I personally would not run it anymore until this test is done. Could end up with more probs on your hands.<br /><br />And you do have a set of muffs your running this on or is it in the water? Never give a motor not under load (on the muffs) any more gas then idle... you can throw your motors insides into your neighbors yard....and they'll love you for it...<br /><br />theres not much you can do for high speed unless your on the water... What you want to do is get it to idle on the muffs with out stalling... before she goes to the lake.<br /><br />What do the plugs look like after it's run for a bit??? do they all look the same..??? also are they the correct plugs gapped right??? Champion L-19v or champions equivilant...should be I believe gapped at 30

 

[danny_walton2000]

Re: 1971 evinrude probs

Dont have a compression tester or I would, yes good gas, mixed at 50:1. This is evinrude's suggested mix on there sight. I took the gas out of my can that I use for my jet ski and it runs good on it so I know its good gas. I do have a set of muffs on it, definatly smarter than that. Plugs all look the same, calls for champion 828 gaped at 30.

 

[djzyla1980]

Re: 1971 evinrude probs

Motor gets warm something cuts out. when it cools down it starts back up. Let it run until it dies... Check for spark imediatly after it dies. Could be power pak or coils heatin up and cuttin out. <br />To me if you have to have throttle up that high... your down a cylinder or 2.<br /><br />Have you pulled the flywheel to check the key? A sheard key will mess with timing... Be sure to torgue to specs... or it will shear for sure<br /><br />you can Check the fuel pump diaphram for any holes...and the screen if it's clogged. <br /> Compression gages aren't all that expensive and I would suggest getting that done (wether you buy one or take it somewhere)just to make sure it is worth puttin money into it.

 

[danny_walton2000]

Re: 1971 evinrude probs

I ran a compresion test. The top cyl. is at 140psi, middle cyl. is at 132, and bottom is at 135. when i got the boat the flywheel key was already sheard so I replaced it. Cleaned out the fuel pump too.

 

[djzyla1980]

Re: 1971 evinrude probs

Ok... Worth it then...<br />"when i got the boat the flywheel key was already sheard so I replaced it"<br /><br />Did you torque it to specs??? It is possible that if you just tightened it tight it could have sheared again. I went through this issue many a times... Finally ended up makin my own and torquing it right... most around here say 105 lbs... Since I don't have a socket big nough I just use the pipe wrech with a 2' breaker bar and tighten it till it won't tighten any more...no more broken keys..... And yes... just idleing without it torqued can make it shear =o)<br /><br />It's free to pull the flywheel to check the key. While you have it off check the rotor to make sure the little tab on the under neath side is still there "keeping it in time" Mine sheard off and although it would turn there was nothing keeping it turning at the right times...<br /> It sounds like much of the battles I played with... and we won't go there yet =o)

 

[danny_walton2000]

Re: 1971 evinrude probs

yep all that checked out ok. i thought of that earlier and used my torque wrench and torqued it down to 95lbs. i think most of it has got to be a fuel problem.

 

[djzyla1980]

Re: 1971 evinrude probs

Have you gotten it to run yet??? I'm assuming not since you didn't say wether you have spark after it dies. <br /><br />Theres the switch on the throttle linkage for the start safety switch... if you ground that wire you can start it in any range (you'll still have nuetral saftey switch) I actually just loosened it up and adjusted it a bit and it help out greatly. <br /><br />If you spray the premix into the carbs and theres no change... it's prolly not fuel.<br /><br />They take 3 things to start. Compression, spark and fuel, Compression is good, fuel is there...and spark but at the right time? Plug wires hooked up right? if they are Pull #1 plug... turn motor to TDC with flywheel off make sure everything is lignin up right<br /><br />Hope I've helped so far.....but I think I'm running outta suggestions.....

 

[danny_walton2000]

Re: 1971 evinrude probs

I dont know which one is number 1 plug, lmao. nor do i know which plug wire goes where for a positive to even know if everything is running ok or not. dont have a manual and there is no place within 60 miles that works on boats that have a manual that goes that far back. lol. And im sure as heck not going to download one for $32

 

[djzyla1980]

Re: 1971 evinrude probs

Ok... I have a manual for a range of motors... Email me at djzyla1980@cs.com and I'll see what I can come up with.<br /><br />whats the specs on the motor?? 3 cyl or 4.... with that year assuming 3 <br /><br />Look on ebay for a manual... I found mine for $9 plus shipping... but I'll see what I can do for you... send me an email

 

[swimmin' for shore]

Re: 1971 evinrude probs

Not to make light of dan's problem, but it had better only be a 3 cyl....he only gave 3 compression readings....Initially, I thought, "Hmmm...Now there's the problem. The 4th cylinder has just up and disappeared. Good luck, Dan. You're in the right place, and you're bound to get her runnin.

 

[danny_walton2000]

Re: 1971 evinrude probs

LOL. I'm begining to hate this thing. In 5 days it has started 3 times, and just sputters most of the time, getting my hopes up and acting like it wants to but just wont.

 

[eboylan3]

Re: 1971 evinrude probs

If this is like my 1969 55hp 3 cylinder, there is an external manual choke on the starboard side of the air cover. If this gets bumped even slightly, it chokes the engine until it is reset (push it up). The technician warned me that it would be very difficult to restart/run if I accidently knocked it on putting the cowl back over the motor. Is this a possibility? GL.<br /><br />John

 

[djzyla1980]

Re: 1971 evinrude probs

LMAO..... It was late.... and I was a bit tired... To even pay much attention to how many comp reading there were..... Didn't put 2 and 2 together.... or sould I say 3 and 4...lol can we say BRAIN FART???? I think I might have to start goin to bed earlier =o)<br /><br />#1 should be on top...the 2-3 to bottom... <br /><br /> it's not like a car were you can "turn" the distributor to change the timming. The adavance linkage of course advances the the timing. You don't usually change the idle timing or worry about it(as it will fall into place).. you adjust the WOT timing by turning the stop screw.... Don't worry about the timming at this point. <br /><br />Ground out the wire I was talking about to the saftey switch (on block) as this will allow you to start the motor in a higher throttle... See if you can get it going again that way. If you can and it still spudders a bit... move throttle up a bit so it just runs smooth. Let it warm up (10-15 minutes)and then see if you can pull it back any. Also look at your throttle linkage on the motor and see if as you push the throttle foward it moves the same time (no play in cable) I do know I feel like I'm starting my motor with the timing advanced a bit.... but after she warms up (about 15min) I can pull it back down and start at a lower point. My throttle plates are open slightly when starting cold.<br /><br />one other thing... have you looked at the choke plates... Make sure there not stuck these should move freely. If they close when trying to start... try manually opening them... if open... try closing.

 

[Walker]

Re: 1971 evinrude probs

I believe its time to tear the carbs down, give them a good soaking in a suitable carb cleaner and then rebuild them with new kits. I'll bet your idle circuits are gummed up.

 

[danny_walton2000]

Re: 1971 evinrude probs

got it started, then it died. cleaned the carbs and puting them back on, guess we'll see. lol