Hello,
To cut a long story short I rebuilt an Evinrude 135 and gave it new rings, gaskets and full electrics. After the rebuild, it ran very erratic and after running it with the garage lights off I could see clear HT leaks from all 4 of the new HT leads at the spark plug so I replaced them all with the old ones and it now runs much better (with no HT leaks) apart from the fact it has a rough idle and if you leave it for 2-3 mins it will cut out and you can start it again fine. Timing is 100% ok as I checked like 3 times during troubleshooting. Compression is excellent.
While it was idling I adjusted the idle screw and it seems to get to a point where it suddenly starts running much slower(where as above it will eventually misfire and cut out), if I made a few turns back it would jump back into life (and run forever) so my question is what is it effects the idle speed - is it just the timing (screw I was adjusting) or do I need to do something with the linkage? Maybe there is idle jets in the carbs? Really not sure about it and could not find anything on google.
I have followed guides online to setup the linkage and as far as I can see have done it right buts it's an old linkage.
Would much like any advice. I'm so close to having a beast of a engine!
Thanks
To cut a long story short I rebuilt an Evinrude 135 and gave it new rings, gaskets and full electrics. After the rebuild, it ran very erratic and after running it with the garage lights off I could see clear HT leaks from all 4 of the new HT leads at the spark plug so I replaced them all with the old ones and it now runs much better (with no HT leaks) apart from the fact it has a rough idle and if you leave it for 2-3 mins it will cut out and you can start it again fine. Timing is 100% ok as I checked like 3 times during troubleshooting. Compression is excellent.
While it was idling I adjusted the idle screw and it seems to get to a point where it suddenly starts running much slower(where as above it will eventually misfire and cut out), if I made a few turns back it would jump back into life (and run forever) so my question is what is it effects the idle speed - is it just the timing (screw I was adjusting) or do I need to do something with the linkage? Maybe there is idle jets in the carbs? Really not sure about it and could not find anything on google.
I have followed guides online to setup the linkage and as far as I can see have done it right buts it's an old linkage.
Would much like any advice. I'm so close to having a beast of a engine!
Thanks