77 --175 evinrude

[ROGER67]

One time it will run fine another time she won't ... on wot it will not take until you choke it and some times it will not idle at all ,,,what the heck is going on with the beast ,,, have rebulit the carbs and have put new plugs in ,, could it be the power packs or could the coils be bad ,,help me here ,,

 

[clanton]

Re: 77 --175 evinrude

Do a compression test.

 

[petryshyn]

Re: 77 --175 evinrude

then check for spark

 

[ROGER67]

Re: 77 --175 evinrude

Did the compression check 120 all clys. and the spark test at a 1/2 bright blue on that any other ideals here ,,,dose the fuel pump work off of compression?? And if so can it be repaired ,,,what else do I look for

 

[petryshyn]

Re: 77 --175 evinrude

To eliminate the fuel supply suspicion, have someone squeeze the primer ball continuously while you are taking off. <br />>If problem gone = fuel supply<br /><br />The ugly thing about ignition is that it can be intermitent. If you happen to check it at a good time, you'll be fooled. You must check it when its acting up. Don't forget...you must check each cylinder individually, as its common to have only one cylinder fail<br /><br />Good luck...<br /><br />

 

[ROGER67]

Re: 77 --175 evinrude

 

[ROGER67]

Re: 77 --175 evinrude

Done that no change if you choke the thing a couple of times while trying go wot it will take off and run fine after shut down its the same old thing over agian ?????? and won't idle any more ideals here ????

 

[petryshyn]

Re: 77 --175 evinrude

sounds like idle circuit is lean. Probably needs carb cleaning. You can try the short cut way....<br />>remove idle mixture adjusting screws<br />>spray some WD-40 into screw holes<br />>'gently' blow with compressed air<br />>reinstall screws and turn in till just bottoms(don't tighten)<br />>back each screw out 1 1/2 turns<br />>restart engine and adjust each screw equally for best idle(re-adjust when engine warm)<br />>when best idle is achieved, check for bogging.<br />>if still boggs, back each idle screw out equally 1/4 turn at a time. then retry<br /><br />if this doesn't help.......overhaul carbs....<br /><br />goood luck!!!!!<br /><br />

 

[ROGER67]

Re: 77 --175 evinrude

the carbs were rebuilt and they do not have adjusting screws on the barbs any one else care to saay what its problem is

 

[Trent]

Re: 77 --175 evinrude

Redo the carbs...<br />Run some Berrmans B12 in the fuel tank..WOrks really well. Get it a Wal Mart.

 

[ROGER67]

Re: 77 --175 evinrude

what does this Bermmans B-12 stuff do >??