1987 140 v4, Jetting Question and clarification please !!

[nymack66]

Thanks Ferm I will give that a try, I was running .20 in all the intermediates and it was doing exactly what you describe consistent after a long trolling,
At first I thought it was old fuel, however I ran it empty and try fresh fuel and even clean the carbs....Last weekend I was out in rough waters and she kept stalling when getting up on plane. If stab the throttle she jumps up and run like a rabbit... its why I am trying to figure out the jetting ...I am stock on idle and high ...I will post the results ..

[THEFERMANATOR]

Originally Posted by nymack66

Thanks Ferm I will give that a try, I was running .20 in all the intermediates and it was doing exactly what you describe consistent after a long trolling,
At first I thought it was old fuel, however I ran it empty and try fresh fuel and even clean the carbs....Last weekend I was out in rough waters and she kept stalling when getting up on plane. If stab the throttle she jumps up and run like a rabbit... its why I am trying to figure out the jetting ...I am stock on idle and high ...I will post the results ..

Yep, all 16's or 14's will take care of that. OMC was experimenting early on with how to get these loopers to run, and 85-87 went through ALOT of changes for these reasons.

[nymack66]

Ferm, I change the intermediates to .16 from .20 low and behold the shutdown/stuttering from idle up to a plane is gone!
However I observer she now has the FLU, she is sneezing on idle ! I was thinking to richen the idle currently .28 to maybe a .23 ?
Remember I have the Boy's reeds installed ...

[THEFERMANATOR]

Originally Posted by nymack66

Ferm, I change the intermediates to .16 from .20 low and behold the shutdown/stuttering from idle up to a plane is gone!
However I observer she now has the FLU, she is sneezing on idle ! I was thinking to richen the idle currently .28 to maybe a .23 ?
Remember I have the Boy's reeds installed ...

That sounds about right, but make sure your BOYESENS aren't leaking any at idle as mine were with only 4 hours on them. CHanged over to the TDR reeds and no more sneezing when I had my 225.

[nymack66]

Thanks I will give that a try, My gut feelings tells me you are right on about the reeds leaking. I have a complete set of CCMS reeds which Chris personally installed and sent to me. Just in case this idle does not improve i will swap them out.