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Marine Quadrajet, e-10 fuel, stored 5m a year, how often should I clean/rebuild?

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LouC:
 Got a related question to the one about the fuel filter. My Q-Jet is an original marine unit on my 1988 OMC/Chevrolet 4.3 V6. I have averaged about 6 seasons between it needing a cleaning/rebuild, this boat is run on E10 gas and stored for approx 5 months each season. Just rebuilt it with Cliff's Marine kit this week.
Usually what leads me to doing a cleaning/rebuild is unsteady idle, stalling, or poor high rpm performance. I'm thinking I should maybe do it at 5 seasons to avoid trouble, thoughts?
Also instead of storing it with e10 fuel in the carb, I was thinking of dumping the fuel filter at winterization and then filling a new one with E0 gas like VP racing fuel. These filters are big like and oil filter so they hold a fair amount of fuel. Then run the engine for about 5 min so the E0 gets into the carb while fogging it. The thought here is the carb will be full of E0 gas when sitting over the winter, might reduce the build up of deposits.....thoughts?

quadrajam:
   Sounds like a good idea to me but I would also add a dose of STABIL to your
fuel tank for the last outing before storage.

QJ

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