Why does my generator leak oil?

If your generator is leaking oil, that indicates a serious problem that should be addressed immediately. Ignoring it could increase the risk of engine seizure or damage, as well as fire and explosion. There are many reasons why a generator may be leaking. Fixing these problems is not a simple DIY task and requires an expert in electrical repairs and generator service. Seidel Electric offers generator warranty repairs as well as ongoing maintenance that can reduce the risk of problems like leaks. Read on to find out the answer to ‘Why does my generator leak oil?’ in Blairstown, NJ.

Why Is My Generator Leaking Oil?

There are a few reasons why a generator may leak oil, ranging from minor issues with quick fixes to major problems that may require professional generator repair and installation of new parts. The most common generator oil leak causes are:

• Worn Out or Damaged Seals or Gaskets – Rubber gaskets and seals can become brittle over time due to vibration, heat, cold, and wear and tear.
• Overfilling the Crankcase – Too much oil in the crankcase can increase the internal pressure to a point that causes failure of oil seals at each end of the crankshaft.
• Loose or Damaged Components – The drain plugs, filler caps, and oil filters can become loose or damaged over time, leading to leaks.
• Clogged Parts – Clogged filters, breathers, and PCV valves can increase pressure and force oil past seals and gaskets.
• Cracked Engine Housing – Damage to the engine housing can allow oil to leak through.
• Problems With the Turbocharger – Diesel generators may suffer from blocked oil return lines, leading to oil leaks from the turbocharger.

Signs of an Oil Leak in a Generator

Inspect your generator before using it to check for signs of leaks. If you see any signs of a leak, immediately call a professional to fix generator oil leakage. You can identify a leak by:

• Visible puddles of oil on the ground beneath the unit or on the exterior, or oil stains underneath the generator
• More frequent need to refill the oil or constant low oil levels
• A strong burning smell or metallic odor when the generator is running
• Blue or white smoke from the generator’s exhaust
• Increased engine noise, such as knocking, grinding, or rattling
• An oily buildup of residue around the air filter, spark plug, or air discharge end

How Oil Leaks Affect Generator Safety and Performance

An oil leak is not only a serious safety hazard, but also indicates an underlying problem with the generator that should be addressed immediately. Leaks can cause immediate and long-term issues that affect generator safety and performance, including:

• Engine Failure – High engine friction and overheating can lead to the engine seizing. Without repair, this will eventually cause engine failure.
• Reduced Performance – When oil leaks into the generator’s combustion chamber, it can damage spark plugs. Eventually, this will disrupt the fuel-air mixture and cause poor power output, reduced engine efficiency, and frequent stalling.
• Overheating – If the engine doesn’t have sufficient oil to circulate, it won’t dissipate heat as effectively. This causes overheating, which will warp engine components and cause major engine damage.
• Internal Damage – Leaks can also contaminate internal components, causing internal wear and tear and reduced lifespan.
• Fire – As oil leaks onto the hot surfaces of the engine, the risk of ignition and fire significantly increases.
• Explosion – A generator fire can cause an explosion, which can cause property damage and serious injury.

Importance of Maintenance to Prevent Generator Oil Leaks

Regular generator maintenance is crucial in preventing problems like oil leaks. Maintenance can help you avoid costly repairs and sudden failures, reduce the risk of needing premature generator replacement, and maintain generator safety, performance, and efficiency. It can also prevent oil leaks by:

• Protecting Gaskets and Seals – Regularly inspecting your generator can help you catch early warning signs of cracks, damage, and degradation of gaskets and seals so that you can replace them before they fail.
• Maintaining Optimal Pressure – A key element of maintenance is keeping the crankcase vent clear, which maintains optimal pressure. This prevents an internal buildup of pressure that could force oil past seals and walls.
• Ensuring Tight Fasteners and Connections – Ensuring that all fasteners and connections are tight can prevent vibration-related leaks at joints.
• Ensuring Proper Lubrication – Regularly changing the oil ensures proper lubrication. This reduces wear and tear and engine friction that could lead to excessive oil consumption and leaks.
• Catching Early Warning Signs of Problems – Preventive maintenance allows generator service professionals to detect early warning signs of problems like small leaks and repair them quickly before they become major issues that require new generator installation. 

Preventive Maintenance Tips for Generators

Your generator’s manual outlines a schedule for preventive maintenance. Following this schedule is required for your appliance’s warranty as well as for the continued safe and reliable operation of your Generac generator. Here are some essential preventive maintenance tips:

• Run the generator for 20-30 minutes at a 20% load every month.
• Change the engine oil and air filters annually or after 50-100 hours of use.
• Check batteries regularly for signs of loose connections or corrosion.
• Use a battery minder to maintain optimal battery charge.
• Store the generator properly when not in use by putting it in a cool, clean, and dry place that is elevated off the ground.
• Protect the generator from leaves, dirt, and debris.
• Make sure the generator always has recommended clearance on all sides and the top when running.
• Use a fuel stabilizer when recommended to prevent fuel degradation.
• Schedule professional generator service and maintenance each year or after every 100- 200 hours of run time.

Why Choose Seidel Electric for Generator Leak Repair

Seidel Electric is a family-owned and operated electrical contractor that has been in business since 1944. We are the number one Generac dealer in the tri-state area, offering warranty repairs, maintenance, and service that extends the lifespan of generators and ensures safe and reliable operation. Our experienced professionals offer generator installation and repair services with a focus on exceptional customer service, proactive solutions, and expert advice and recommendations tailored to each customer’s unique needs.

Call Seidel Electric Today

Our preventive maintenance program allows for early detection of leaks, and annual service ensures all parts are properly inspected and replaced before they become so damaged that they cause a safety or performance issue. Call us now or reach out to us online to schedule a generator inspection or generator leak repair in Blairstown, NJ, or the tri-state area.