Outboard Motor Repair Outboard Motor Repair  

Outboard Motors

Power Heads

Lower Units

Props

Repair Manuals

Controls, Steering

Trim/Tilt

Power Tilt/Trim

Parts

Outboard Motor Repair


Chrysler
Evinrude
Force
Honda
Johnson
Mariner
Mercury
Minn Kota
Nissan
OMC
Suzuki
Yamaha
2 Cycle Outboard Motors
2 Stroke Outboards
4 Cycle Outboards
4 Stroke Outboards
Aftermarket Outboard Parts
Boat Wont Plane
Bolts
Brackets
Carburetors
Cavitation
Choke
Coils
Compression
Condensors
Controls
Cooling
Cowling
Crankshafts
Cylinders
Diagrams
EFI
Electrical
Engine Cleaner
Engine Smoke
Exhaust
FICHT
Fins
Flywheel
Fouling
Fuel Pumps
Fuel Systems
Fuel Tanks
Gaskets
Gauges
Gear Cases
Generators
I/O
Idle
Ignition
Impellers
Inverters
Kill Switch
Leaks
Lower Units
Lubrication
Manuals
Oil
Oil Injection
Oil Mixture
Old Outboards
Outboard Engine Blocks
Outboard Inboard
Outboard Maintenance
Outboard Motor Prices
Outboard Propellers
Paint
Parts
Pistons
Power Loss
Power Packs
Powerheads
Primer Bulb
RPM
Repair Tools
Reverse
Running Lean
Running Rich
Runs Hot
Sea Drives
Sealants
Shafts
Shifter
Skegs
Spark Plugs
Specs
Spring Maintenance
Starter Motors
Starting Problems
Stators
Steering
Synthetic Oil
Tachometers
Tillers
Tilt Trim
Timing
Trim Tabs
Twin Outboards
V6
Voltmeter
Water Pumps
Winterization
Wiring
Year

Mercury Outboard engine problems

rpiar I am new to fishing and I just encountered a problem. I have a 1978 bass boat with a 1978 Mercury 150hp V6 engine. It was running great until I ran into a sand barge. No damage done anywhere on the prop, however, when I pulled it out, the engine runs fine, but it has lost all its power and barely gets enough speed to move.

Is something blocked? Please help... Mercury
2002-05-20
bp21 Friend of mine had a similar problem a few years ago. He buried his lower unit in a couple feet of mud and sand and ended up sucking up some gunk into his water pump. Long story...anyway...some of the sand ended up in a couple carbs and he had to have them bored out in order to get the engine running properly again. Don't know if that is your problem but I wouldn't rule it out. 2002-05-20
Deerdog Awws*****t. I am assuming you didnt have a temp guage on the boat. Yep chances are you sucked enough sand into you cooling system to make one or more cylinders too hot due to constricted circulation. I know a guy that this happened to also but he sucked in some mud when he ran into a mud bank. In his case no alrms went off either but he lost the motor.

Another thing that could have happened is that you hit the thing and you spun the engine main and one/more rod bearings.

Two guesses. My bet is the first one. Have it flushed and looked at. I hope it isnt too late.

Deerdog
2002-05-20
ehenry You say engine runs fine. Will it build RPM's and just not move??? Maybe you spun the prop hub. That sometimes won't show up on the prop where you can see it. Hope that what your problem is. 2002-05-20
Saperry I replied to your post under boating.
Any way my bet is on the prop hub (see post)
Good luck..
2002-05-20
Deerdog Yeah, I guess I ought to read the posts better. I saw no power and didnt see engine runs fine. I would also agree that you may have a spun or partially spun prop. Still need to make sure it is flushed out though.

Deerdog
2002-05-20

If you would like to post your own question for the experts just click on
the Boating Forums tab at the top of the page or click here!

Disclaimer: iboats.com provides this content for the education and benefit of all boating enthusiasts.
We cannot, however, take responsibility for individual postings, nor can we verify the accuracy of any posting.
Please use any information provided from individuals with great care and read any applicable manuals or safety instructions.
Also, if you determine that a posting is inaccurate or offensive in any manner, please use the Contact Us email form found below.

If you would like to post your own question for the experts just click on the Boating Forums tab at the top of the page!


Outboard Motors

Power Heads

Lower Units

Props

Repair Manuals

Controls, Steering

Trim/Tilt

Power Tilt/Trim

Parts

Outboard Repairs | Boats | Outboard Motors | Boat Dealers
Boat Covers | Boat Propellers | Boat Repair | Marine Engines | Outboard Forum Directory
Terms of Use | Privacy Practices | Legal Notices

1-800-869-1686 (Toll Free)
001-801-571-0071 (International Calls)
Copyright © 1999-2009 iboats, inc. All rights reserved.