Search results

  1. D

    5.7L Thunderbolt Ignition Alpha One Gen II will not accelerate above 1500 rpm in gear

    For the first time in nine months, I operated the boat towing a tube up to 3000 rpm for about 2.0 hours. It worked great with smooth acceleration and operation. Prior to this event, I had sprayed the carb linkage, choke pivots, and the carb throat with Carb Cleaner while the engine was at...
  2. D

    Defeating the "Run/Off" switch

    The Run/Off switch is just below the throttle/shift arm on my speedboat. I believe its sole purpose is to tether the pilot to the switch so that it functions as a dead man switch if the pilot leaves the helm and shuts down the engine. Is there any other purpose to this switch? Can I just wire...
  3. D

    RPM on Tach suddenly higher than engine sounds?

    Just came off Lake Folsom in Ca (reservoir). We were cruising strongly at 3200 RPM and 31mph for about 10 minutes on moderately bumpy lake water. Then................ ...........Suddenly, the tach went to 5000 RPM (above the 4400 redline) but there was no change in engine performance, boat...
  4. D

    Does My drive shaft have a grease zerk?

    Mercruiser 5.7L carborated with Gen II Alpha One outdrive Looking down the rear of the engine compartment I see the top of what looks and feels like the engine coupler. Extending to the transom from the center of the "coupler" is a smooth shaft, which I took to be the sterndrive shaft. But...
  5. D

    Lost most of prop power

    This is a 2000 Mercruiser 260HP carborated engine with an Alpha One outdrive. The boat ran fine for two hours. While pulling a tube rider at about 3,000 rpm, we heard a clunk and saw and smelled smoke from the engine compartment. Checked the compartment for visible clues and found none...
  6. D

    Jack Used on Tandam Trailer with Fenders

    Ok, I have jacked up my trailer several times to replace wheel cylinders and pack the bearings. However, the only way I can raise the wheels off the ground is by jacking at the Spring hanger between the two wheels. One of my tow vehicles has a jack piston tip that fits the spring hanger ok...
  7. D

    Drip from Water Pump Area

    The engine runs great. Boat does 44mph at 4400 rpm. I see an occasional drip of water splashing from the Water Pump area when the engine is idling. No major build up of water in the bilge. Hoses have been tightened but still it persists. Is this a normal event for this engine? 5.7L Merc...
  8. D

    New to Me, Is prop Ok?

    5.7 Merc Carb Alpha One Gen II 3500 lb Maxum SR2100 21' 5 blade Stainless Hi Five 13.5 x 19 prop #48-815758 Doel Fin Original installed Gear Ratio 1.47 WOT throttle is 4400 - 4800 RPM The boat will travel at @ 45 MPH with three aboard, but has lots of throttle left when at 4400 RPM at 2,000...
  9. D

    Broken Gear Lube Connector Merc 5.7L

    Well, I struggled removing my fuel filter, so I released a fuel hose routing clamp and raised the bundle out of my way. That work fine, except.......the plastic connector at the transom for my stern drive Gear Lube resevoir snapped off and I have hose in hand:mad::confused::mad: It appears...
  10. D

    3000 RPM at Idle?

    oops
  11. D

    3000 RPM at Idle?

    2100SR Maxum, 5.7L Mecury carborator, Alpha One and 19P 5 High Stainless prop and doel fin. Boat worked great for two days at 6,200 ft elevation. The last day the tachometer idled at 3,000 rpm at and 6000 rpm at 20 mph in less than two foot waves. Boat was on a plane and operated fine when...
Top