Recent content by Sonoran Heat

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    Merc optimax 115

    Thinking of purchasing one of these brand new. Would love any feedback folks may have on their thoughts on this motor.
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    Looking for opinions

    Mechanic says my '78 mercruiser needs new distrubutor and camshaft. Says it may be difficult finding a camshaft for this mercruiser 140. Question is should I scrap the boat and/or is it even worth it to try and repair? Also any suggestions on where to look for parts?
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    Teach an old dog new tricks

    I have a 73 merc 140 - looking for a bit of help. Could anyone walk me through how to set the timing on this baby. Trying to understand with the seloc service manual is frustrating. If anyone could break it down into easier to understand steps I would be very grateful. I will purchase the...
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    Add to my list

    Surging, loss of power and backfire after about 10 min under load at anything over 2500 rpms - heres what I have done so far, please add to my list of what to check: Rebuilt carb New fuel pump cleaned gas tank fuel/water seperator new fuel filters new fuel lines checked vacume new plug wires...
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    Is there a better way?

    Hey Gang, purchased an old 78 invader and have put some necessary work into it. However, want to learn to maintain myself (somewhat handy) and not have to take to an expensive mechanic for every little thing. I purchased seloc manual but to tell you the truth not finding very helpful. I know...
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    I love this boat, however

    Hey Gang - could use some help. Here is info and issue. 78 mercruiser 140 - partially restored boat looks good. Having some bogging and loss of power issues once load put on it - say around 1500rpm. Work I have had done to this point - carb rebuild, dist cap, plug cables, points, added a...
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    An old girl

    78 140 hp - need to prime carb with a bit of gas at every cold start. Start right up no problem when warm. Any ideas what might be causing this?
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    New owner of antique boat

    Hey all, first post on here but wanted to give quick intro - names Craig, purchased 78 invader with merc 140 I/O. Runs decent and have learned to change impeller, thermostat and other small projects from many of the posts on here. Problem I am having now is on water yesterday had 2 spark plugs...
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