Recent content by navrivr

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    Winterizing 48 hp Johnny

    Hello, I have totally rebuilt my carbs on a 1988 48 johnson spl this past spring, with all the advice and guidance on the post from this site. The I-boats forums info is a great resource to tap into advice and guidance from experienced mechanics , boat owners alike. I gained valuable experience...
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    Update Water in lower cylinder.

    Hi, 1987 48hp spl Update on water problem. Motor just had complete carb rebuild, new fuel pump and lines. The motor runs flawless at all power ranges. starts very nicely cold or warm and performs very well for a twenty year old motor. Compression readings upper = 150 lower = 145 Based on the...
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    Spark Plug Condition

    48hp 1987 Johnson I did the carb rebuild with all the advice from this forum. My motor now holds prime and the idle is much better. The motor runs great at all power ranges, very happy with results. I ran boat for half a day fishing with not one problem, flawless in fact. I pulled the spark...
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    Update on Carb rebuilds

    Hi All, Thanks to all who responded to my questions on carb rebuild on 48hp johnson problem with poor idle and not ablet to hold prime is now resolved. To all potential outboard repair persons,,,, heed the advise and wisdom of all in this forum. I have gained invaluable information, which...
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    tach and timing light , any suggestions?

    Hello, I just did a complete carb rebuild, sync and link and new fuel lines on a 48hp spl, thanks to all who helped with my previous post, the advice and guidance proved invaluable! I purchased a manual and my goal is to get this big twin back to life. I would like to add a tach (tiny-tach)...
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    Carb re-build / 87' 48 johnny spl

    After 20 yrs of no problems with original carbs on this motor , I had rough idling and problem holding prime at the end of last season. Motor strong when under load and compression high and in spec. upper carb intermitting spitting fuel / compression upper cyl 145 lower carb not spitting and...
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    Genuine Omc parts?

    Does anyone know of any websites that offer genuine omc parts? I did a google search and found a few, does anyone have a suggestion or had dealt with a particular merchant with satisfactory service and good parts? any help is greatly appreciated. thanks!
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    Uneven Compression 48spl

    Hello, Here it is I have a 1987 48 spl , it has idled roughly last 2 seasons, I use this motor every weekend. It has always ran smoothe and very strong a med to high throttle. Mechanically motor is fine. My question is after reading forums on rough idle's I did a very thorough decarb with...
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