Re: Trouble Re-starting
Have you tried adjusting the idle mixture on each carb?
If the idle mixture needles were set too rich, it'd start up readily but begin to idle progressively worse when warmed up to operating temperature.
Try warming up the motor then idling in gear in the water; adjust each needle in and out to find the "range", lean-to-rich of idle mixture adjustment. Rich is CCW and lean is CW.
Once you find the range, set each needle to the midway point between lean/rich. See how it runs.
If it bogs with a sharp tip-in of throttle, you're a touch lean. Conversely, if it idles lumpy, you're probably a bit too rich.
Adjust each carb then you'll probably have to go back and 'tweak' them in a bit. Typically you'll want to be slightly rich for good throttle response.
You may have to adjust the idle speed stop if your idle changes drastically, up or down, as you adjust the mixture. You may end up needing to change the cable adjustment, depending on how much any mixture changes affect idle speed.
Remember you only need enough preload on the throttle cable to make sure it pushes the distributor back to the idle stop every time. If you get too much preload, it'll bind the throttle cable and the fast idle lever won't have much effect.
Anyway, give that a shot, nothing else seems to be helping so far so maybe it's worth a try!...........ed
P.S. are you using Champion J4C plugs or equivalent in this motor??
