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what is causing my 04 merc. 50 4str efi to max out at 3200 rpm?

History-last year motor running fine-during winter storage maintenance I cross-threaded a spark plug hole. Brought it to a Merc. service center, head was removed and heli-coil installed.
I got boat back from mechanic with a bouncy idle 800-820rpm, mechanic said possibility bad gas-Used Stab-il when I did storage maintenance? Also motor shakes/vibrates causing steering to turn at idle because of bouncy idle.
I finally got the boat out yesterday, first time all year-the it would not go past 3200 rpm-all out-very under powered.
In reverse the Rpms go past 3200. I put fresh gas in yesterday morning-premium.

OK, first get rid of the premium fuel. All merc 4/s are designed for 87 octane, up to 10% ethanol. This could be a number of things, i would start by checking the valve timing, could be out a tooth. There are alignment marks on the flywheel and the cam pulley. If this is a fuel problem, the only way to diagnose it is by having the motor scanned by a dealer, which should have been done in the first place. Our marina “hooks up” every EFI motor, firstly to check operating hours, and to verify serial#s. And of course, check for water in the fuel!

Micro Machines Service Masters #15 Collection $33.95 Produced by Galoob in 1995. Approximate size of each vehicle is 1.5 inches long....

Service Manual $21.30 Sea-Doo/Bombardier 1988-91 Covers all models of Sea-Doo and Bombardier personal watercraft ...

Seamanship Secrets $18.95 Learn how to become a better navigator and skipper These seamanship and navigation techniques are designed for maximum usefulness in the cockpits, pilothouses, and navigation stations of sail- and powerboats. Navigation techniques range from traditional to electronic and include highly useful tips for coastal cruise planning under sail or power. Seamanship techniques include docking and maneuverin...

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Boat Maintenance $28.95 Boat Maintenance: The Essential Guide To Cleaning, Painting and Cosmetics offers advice on how to keep your vessel in ship-shape condition...

Modern Boat Maintenance: The Complete Fiberglass Boat Manual $4.07 Modern Boat Maintenance: The Complete Fiberglass Boat Manual

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Trouble Shooting And Maintenance Of Boat Engines $5 Trouble Shooting And Maintenance Of Boat Engines

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The complete book of boat maintenance and repair $2.89 The complete book of boat maintenance and repair

Boat Maintenance $17.98 Boats require constant care. Any boater who doesn't know the difference between a silicone-modified alkyd enamel and a one-part urethane needs this book for its invaluable advice on: * How to save money with generic substitues * Product recommendations for every job * Keeping weekly, monthly, and seasonal maintenance schedules

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Boat Maintenance Afloat and Ashore Part II $4 Boat Maintenance Afloat and Ashore Part II

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Quick and Easy Boat Maintenance $13.48 A treasure chest of proven labor-savers that can help you get those pesky maintenance chores done faster--so you can get out on the water and play. Here are 1,001 tested tips from Boating Magazine's maintenance expert, giving super-effective yet environmentally friendly ways to clean and maintain all your boat's systems: deck, hull, cabin, engine, bilge, electrical systems, tanks, and gear. Stop working on your boat and go boating!

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Take the Mystery Out of Boat Maintenance $5.48 Take the Mystery Out of Boat Maintenance by Lawrence A. Diamond 1st Published in 1989 by W. W. Norton & Company

Complete Guide To Boat Maintenance & Repair $3.48 Complete Guide To Boat Maintenance & Repair by David G. Brown, and Ronald Carboni 1st ed Published in 1993 by Harper Perennial

Basic Boat Maintenance $7.98 Frank Brumbaugh has lived boating and written articles for most of his life. In that time, he has tackled every conceivable problem a boater could ever be confronted with on a boat. For the first time, he has put those years of knowledge into an easy to understand book, Basic Boat Maintenance. This book contains a wealth of information any boat owner can use to perform routine maintenance and repairs. Along with this, Frank has provided his recommendation for a time schedule to follow for this work. Basic Boat Maintenance is highly illustrated with graphics showing, in detail, the steps needed to accomplish most tasks. Additional graphics show the correct charge state for the batteries, a schedule of maintenance, which task to complete and when they should be completed. The information is presented in a straight forward, easy to understand and follow writing style. This allows any boater, regardless of skill level from novice to advanced, to use the information quickly and easily without fear of mistakes during the projects. After completing this book, you will have the confidence to maintain and repair your own boat. Illustrated.

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Modern Boat Maintenance $5.25 Written by skilled sailors, MODERN BOAT MAINTENANCE provides clear explanations and simple to follow step-by-step instructions covering the fiberglass hull, deck, and superstructure, as well as rigging and sails, engines, the electrical system and much more. Numerous illustrations are detailed and easy to follow.. . .chockablock full of ideas for maintaining and improving your boat . . . good descriptive graphics.Because of its diverse sources, the book is more of a stew than a five-course meal . . . . The language is simple and concise, and subjects are well illustrated.

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Simple Boat Maintenance $17.81 Colour photo-sequences and clear text show even a ham-fisted beginner how to fix their boat...

Simple Boat Maintenance $19.48 Colour photo-sequences and clear text show even a ham-fisted beginner how to fix their boat. The two aims of this book are preventing problems and curing them when they do happen (even at sea). This is the best-illustrated book ever produced on maintenance and Manley has spent over a year photographing each stage of each topic. These include: Engine                      Stern Gear Water System Gas System Heads Electrical System Fuel System Steering Winches Fibreglass Deck Hardware Leaks Inflatable dinghy Tools

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Modern Boat Maintenance $17.98 If you own a fiberglass sailboat or powerboat, this is the book to turn to when dealing with questions of maintenance, improvement or repair. Here you will find clear explanations and easy-to-follow, step-by-step instructions covering the fiberglass hull,

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Simple Boat Maintenance $23.31 <b>Colour photo-sequences and clear text show even a ham-fisted beginner how to fix their boat.</b><p>The two aims of this book are <b><i>preventing</i></b> problems and <b><i>curing</i></b> them when they do happen (even at sea). This is the best-illustrated book ever produced on maintenance and Manley has spent over a year photographing each stage of each topic. These include:<ul><li>Engine                     <li>Stern Gear<li>Water System<li>Gas System<li>Heads<li>Electrical System<li>Fuel System<li>Steering<li>Winches<li>Fibreglass<li>Deck Hardware<li>Leaks<li>Inflatable dinghy<li>Tools</ul><b>Introduction.</b><p><b>Engines: Cooling system.</b><p>1. Engine overheating due to blockage.<p>2. Sea water pump.<p>Changing the impeller.<p>Sea water pump leaking.<p>3. Thermostat.<p>4. Anti-syphon valve.<p>5. Other problems.<p><b>Engines: Fuel system.</b><p>6. Fuel pump.<p>7. Bleeding (venting) air from the fuel system.<p><b>Engines: Electricity.</b><p>8. Drive belts.<p><b>Engines: Servicing.</b><p>9. Servicing the engines.<p><b>Engines: Other topics.</b><p>10. Adjusting valve clearance.<p>11. Engines mounts.<p>12. Engines alignment.<p>13. Winterisation.<p>14. Engine won't start.<p>15. Engine won't stop.<p><b>Fuel System.</b><p>16. Fuel contamination.<p>17. Cleaning the fuel tank.<p><b>Water System.</b><p>18. Recharging the accumulator.<p>19. Replacing contaminated p@7O\(õÂ?ÿ¾Úð

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Suzuki, Dr250-350, 1990-1994: Service, Repair, Maintenance $35.66 Suzuki, Dr250-350, 1990-1994: Service, Repair, Maintenance

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Harley-Davidson Sportsters, 1959-1985: Service, Repair, Maintenance $28.87 Harley-Davidson Sportsters, 1959-1985: Service, Repair, Maintenance

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