The Marine Knowledge Network
Field write-ups from real jobs - what broke, what fixed it, torque specs and part numbers included. Ask it a question; specs answer inline.
15 articles for “corrosion”
Anodes and Galvanic Corrosion, Explained for the Dock
... the drive-killer Galvanic corrosion is slow; **stray DC current** (a chafed bilge pump ...
Yamaha F-Series Four-Stroke Winterization
... Touch up paint nicks, spray corrosion inhibitor under the cowl, and replace anodes worn ...
Volvo Penta Sterndrive Annual Service Essentials
... zinc for salt (see the galvanic corrosion article). 3. **Bellows and clamps.** Same boat ...
Pontoon Boat Inspection: Logs, Leaks, and Pre-Season Checks
... corrosion in salt or brackish use ## When to walk away Widespread crevice corrosion of ...
Suzuki DF Lower Unit Oil Change and Water Intrusion Signs
... oil **plus** glitter chunks means internal corrosion has likely started on bearings and gears ...
Shrink Wrap vs Indoor Storage: The Honest Trade-offs
... year; traps moisture without vents (mildew, corrosion); plastic waste; no access to the boat ...
Exhaust Manifold and Riser Inspection on Marine V8s
## The quiet engine killer On raw-water-cooled MerCruiser, Volvo Penta, and inboard V8s ...
Outboard Power Tilt/Trim Troubleshooting
... specifies ## When to walk away Severe corrosion where the trim assembly bolts into the ...
MerCruiser Winterization (Raw-Water-Cooled)
... backfilling drains) — belt and suspenders, plus corrosion protection. Antifreeze without draining first just dilutes ...
Yamaha WaveRunner No-Start Diagnosis
... water at the plug holes = internal corrosion lock. Quote a teardown/recovery honestly rather ...
Evinrude/Johnson Two-Stroke No-Spark Diagnosis
... coils, and block; connectors green with corrosion get cleaned before any parts are ordered ...
Ethanol Fuel Problems in Boats: What It Does and How to Treat It
... a corrosive water/ethanol layer drops to the tank bottom, exactly where the pickup ...
Submerged PWC / Water Ingestion: The First 48 Hours Matter
## Time is the enemy A submerged or hydrolocked PWC engine starts corroding internally the ...
Hydraulic vs Cable Steering: Diagnosis and Service
... seized in the **tilt tube** with corrosion, not the helm. Disconnect the cable at ...
Two-Stroke vs Four-Stroke Oil: What Goes Where and Why It Matters
... environments; FC-W oils carry extra corrosion inhibitors and shear stability that automotive oils ...