Small engine won’t start? Identifying the Cause.

Small engine won’t start?

Bad gas is the number-one reason, and here’s how to prevent it.

Len Groom | TECHNICAL PRODUCT MANAGER, POWERSPORTS

In northern Minnesota, where I live, the temperature occasionally breaks 80ºF (27ºC) in the summer. When it does, it’s time to fire up my Jet-Skis* and hit the lake. The last thing I want to do on a sunny summer day is mess around with equipment that refuses to start or run properly.

Bad gasoline is the number-one reason seasonal equipment starts hard or runs rough. Over time, gasoline changes, leaving behind gums, varnish and other solids that foul the fuel system and prevent gas from flowing into the combustion chamber. In severe cases, gasoline can change so dramatically that it no longer ignites.

Gasoline is predominantly a mixture of carbon and hydrogen atoms bonded together into energy-dense hydrocarbons. Like conventional base oils, it’s derived from crude oil via a distillation process that uses heat, pressure and other catalysts to create different fractions. Gasoline is comprised of hydrocarbons that are lighter than those found in, for example, diesel fuel or conventional base oils. Refiners add ethanol to the formulation, typically 10 percent, but as high as 85 percent.

Time Takes Its Toll – You Must Treat Gasoline

Time, however, takes its toll on gasoline. Exposure to heat, humidity, atmospheric pressure, oxygen and other variables degrade fuel.

In addition to gums and varnish becoming more concentrated and less soluble as lighter hydrocarbons evaporate, gas is continually oxidizing, which further contributes to varnish and other gunk. Gasoline oxidizes more quickly than motor oil and its negative effects are more immediately noticeable. That’s why it’s important to use high quality gas and store it in approved containers where air infiltration is limited, like inside a ventilated garage or shed, and not in the back of your truck or under the deck.

Meanwhile, ethanol added to gasoline at the refinery can absorb water from the atmosphere, which can lead to phase separation, which occurs when ethanol and gas separate, much like oil and water. Ethanol that has absorbed enough moisture and has sat long enough can foul the fuel system and prevent the engine from starting.

AMSOIL Fights Corrosion

AMSOIL provides corrosion protection Sea Foam® Motor Treatment can’t match, helping maintain power and performance and keeping metal looking like new even when subjected to salt water. ?

? Based upon independent testing of AMSOIL Gasoline
Stabilizer obtained Nov. 8, 2018 and Sea Foam Motor
Treatment purchased Oct. 25, 2018 in a modified NACE
TM0172 using synthetic sea water per ASTM D665 part B.

This all sounds dire, but it’s nothing treating your gasoline with AMSOIL Gasoline Stabilizer (AST) can’t solve. Gasoline Stabilizer keeps fuel fresh up to 12 months. AMSOIL Quickshot® (AQS) stabilizes gasoline during short-term storage up to six months, in addition to providing potent cleaning benefits and protection against ethanol issues.

What does stabilizer do?

That explanation may suit some people, but this is Tech Talk, so let’s look at the chemistry behind gasoline stabilizers.

You’ve probably heard terms like “free radicals” and “antioxidants” in relation to your health. A free radical is an unpaired electron, and most are unstable and highly reactive. They can either donate an electron to, or accept an electron from, other molecules. This starts a chain reaction that can lead to oxidative stress and cell damage. Left unchecked, free radicals can lead to health problems, like cardiovascular disease and cancer. To help fight free radicals, we should eat plenty of foods rich in antioxidants, which lessen their effects. Antioxidants can “donate” an electron to free radicals or trap them, effectively reducing their instability without becoming unstable themselves. Antioxidants aren’t silver bullets, but they go a long way toward improving our health.

By analogy, gasoline stabilizer is an antioxidant for your gasoline. It disrupts the free-radical-induced chain reaction that causes gas to oxidize and form varnish and gums. Some stabilizer products, like Quickshot, also contain chemistry that increases solvency and breaks down existing varnish, helping clean a dirty carburetor and restore performance. As shown, Gasoline Stabilizer also fights corrosion better than Sea Foam Motor Treatment.

Neglecting to stabilize your gas can lead to all sorts of headaches when it’s time to remove your lawnmower, generator, string trimmer or Jet-Ski from storage. For best results, stabilize your gasoline all year long. That’ll ensure your equipment is ready to roll when you are.

How to Store a Snowblower

How to Store your Snowblower properly. Prevent damage during summer season.

John Baker|Apr 06, 2020 2:12 PM

Storing a snowblower properly is vital to ensuring it fires up when the snow eventually returns. When the first storm of the season dumps eight inches of snow on your driveway, you don’t want to be messing around in the garage when your snowblower won’t start.

fuel stabilizer is key for storing the damn snowblower

Time needed: 30 minutes.

Step-by-step: How to store a snowblower

Stabilize the gas
This is the most critical step to ensuring the snowblower starts right away in the winter.

Gasoline begins to break down in as few as 30 days. Varnish and gums begin to form, which clog the tiny fuel passages in the carburetor. I can tell you from experience that it doesn’t take much to clog a snowblower carburetor and prevent it from starting.

AMSOIL Gasoline Stabilizer keeps fuel fresh up to 12 months. As the image shows, it also does a great job fighting corrosion to keep metal fuel tanks and other components clean and working properly. After adding stabilizer, run the engine for a minute or two to distribute treated gas throughout the fuel system.
Change the oil
Running the engine to distribute gas stabilizer has the added benefit of warming the oil so it flows more easily.

Changing oil before you store your snowblower removes acids and other combustion by-products so they’re not sitting in the engine throughout the summer. Plus, the engine will be ready with fresh oil come winter.

Don’t cheap out on oil – you likely spent upward of $1,000 on your snowblower, so you want it to last. Plus, small engines are tougher on oil than most people think. They’re air-cooled, meaning they run hotter than automotive engines, typically don’t include an oil filter, further stressing the oil, and are often neglected.

AMSOIL Synthetic Small-Engine Oil is a commercial-grade formulation that fights wear and deposits in the toughest conditions. It also flows readily in the cold for maximum start-up protection.
Fog the engine
Simply remove the spark plug and apply fogging oil. It coats the cylinder wall and piston with oil to help prevent corrosion from forming during the summer. If corrosion forms, it flakes off into the oil and scours the bearings and other components, causing wear.
Check the gear lube
Remove the gearbox fill bolt and ensure the housing contains sufficient oil. Check your owner’s manual for the proper lubricant.
Inspect the belts
Now’s the time to check drive belts for cracks or abrasions. Replace them if needed.

Otherwise, I promise you they’ll break at the worst time, like at 5:30 a.m. on a cold November morning after a wet, heavy snowfall. Be proactive and save yourself a ton of grief down the road.
Check the linkages, auger housing and other areas
Before you store a snowblower, look it over from top to bottom. Check for damaged parts and linkages. Lubricate pivot points with a spray protectant, like AMSOIL MP. Spray the auger housing to guard against rust formation over the summer.

Don’t overlook this step. While examining my snowblower last year, I realized three of the four bolts that hold the auger housing and chute (sometimes called the “bucket”) to the chassis had sheared. One bolt was literally holding the snowblower together.

The following Thanksgiving weekend, two feet of snow blanketed Duluth, Minn. I spent eight hours moving snow. Imagine if I hadn’t repaired the snowblower the prior spring and that last bolt had given out halfway down my driveway?

Again, be proactive now to avoid a ton of problems later.
Store the snowblower inside
Finally, park your snowblower in the back of the garage or in a shed for the summer to protect it against rain. If you have no choice but to store it outside, cover it securely. I bought a nice cover at Kmart a few years ago and it still does the job.

Following these steps will help ensure your snowblower is ready to go the next winter.

Tag: fights corrosion