Marine Engine Guides
Cummins Marine Engine Parts Guide: Essential, Easy Steps
Cummins Marine Engine Parts: The Complete Guide
Cummins engines power everything from small workboats to yachts and large commercial v...
Diesel Fuel Contamination in Boats: Essential, Easy Checks
Diesel Fuel Contamination in Boats: Types, Causes and What to Check
A boat's fuel tank is a harder place to keep clean than a car's. T...
Marine Fuel Injector Testing Guide: Methods, Results and Records
Marine Fuel Injector Testing Guide: What the Tests Show and What to Ask For
You have decided an injector might be the problem. Now wha...
How to Tell If a Diesel Injector Is Bad: A Step-by-Step Check
How to Tell If a Diesel Injector Is Bad: A Step-by-Step Check
Is it the injector, or is it something upstream? That is the question be...
Marine Cooling System Maintenance Checklist: Daily to Yearly
Marine Cooling System Maintenance Checklist: From Pre-Start to Yearly
Most cooling failures are not sudden. They start as a clogged st...
Marine Cooling System Flush Guide: Raw Water and Coolant
Marine Cooling System Flush Guide: Raw Water Flush vs Coolant Flush
"Flush the cooling system" can mean two very different jobs on a b...
Why Is My Boat Engine Running Hot? Causes and First Checks
Why Is My Boat Engine Running Hot? Quick Triage for Owners
A temperature gauge that creeps up is easy to ignore. A gauge that jumps in...
Marine Thermostat Problems: Signs, Causes and Fixes
Marine Thermostat Problems: Signs, Causes and What to Do
The thermostat is a small, cheap part with a big job. It decides when coolant...
Marine Heat Exchanger Problems: Signs, Causes and Fixes
Marine Heat Exchanger Problems: Signs, Causes and What to Do
The heat exchanger sits quietly on the side of many marine diesels. It do...
Signs of a Bad Marine Impeller: What to Look For
Signs of a Bad Marine Impeller: What to Look For While Running and Once It Is Out
A bad impeller can hide for a long time. The engine ...
How Often Should You Replace a Marine Impeller?
How Often Should You Replace a Marine Impeller?
Ask five boat owners how often to change the impeller and you will get five answers.
...
Marine Water Pump Guide: How It Works, Parts and Care
Marine Water Pump Guide: How It Works, What Wears Out and What to Keep on Board
Your engine cannot run without cooling water. The pump...
Marine Engine Cooling System Explained: Parts and Care
Marine Engine Cooling System Explained: Parts, Types and Care
A boat engine has a big advantage over a car engine. It floats in an end...
Marine Engine Shuts Down Under Load: Causes and Fixes
Marine Engine Shuts Down Under Load: Causes and Fixes
The engine starts well and idles smoothly. You push the throttle, the revs sag, ...
Marine Engine Knocking Noise: Causes and What to Do
Marine Engine Knocking Noise: Causes and What to Do
A knock from the engine room is one of the sounds boat owners dread. It can be a m...
Marine Diesel Engine Vibrating: Causes and Solutions
Marine Diesel Engine Vibrating: Causes and Solutions
Some vibration is normal on a diesel boat. A new shake, a louder hum or a shudder...
Marine Diesel Engine Running Rough at Idle: 9 Causes
Marine Diesel Engine Running Rough at Idle: Causes and Fixes
The engine starts, settles into idle and then shakes. The revs hunt up an...
White Smoke From a Marine Diesel: Causes and Fixes
White Smoke From a Marine Diesel: Causes and Fixes
You start the engine and a cloud of white smoke rolls out of the exhaust. Sometimes...
Marine Diesel Engine Overheating: Causes and Fixes
Marine Diesel Engine Overheating: Causes and Fixes
The temperature gauge is climbing. Maybe an alarm is sounding.
Maybe the exhaust l...
Marine Diesel Engine Losing Power? 10 Causes and Fixes
Marine Diesel Engine Losing Power? Causes and Fixes
The engine starts fine and idles smoothly. Then you open the throttle and it will ...
Boat Engine Won’t Start? 12 Causes and How to Fix Them
Boat Engine Won't Start? Causes, Checks and Fixes
You turn the key, and nothing happens. Or the starter clicks. Or the engine cranks a...
Marine Diesel Engine Troubleshooting: Complete Guide
Marine Diesel Engine Troubleshooting: Complete Guide
A diesel engine needs only three things to run: clean fuel, enough air and enough...
Marine Engine Preventive Maintenance Guide: Schedule by Season
Marine Engine Preventive Maintenance Guide
Most marine engine failures are not sudden. They are the end of a slow slide that started w...
Marine Engine Rebuild vs Replacement: How to Decide
Marine Engine Rebuild vs Replacement: How to Decide
Your engine is tired, and you have to choose. Do you rebuild it, or do you replace...
Marine Engine Rebuild Cost: What Drives the Price (Guide)
Marine Engine Rebuild Cost: How Much Should You Expect to Pay?
Ask a yard how much a rebuild costs and you will usually hear the same ...