[FAQ] How To Eliminate Common Engine Issues?


Common engine problems that millions of people deal with every day. Here are the listed problems and solutions for the same as reported by PunchNG.

Petroleum gun, varnish and harmful deposit form

Gum and varnish problems affect every engine. As fuel degrades and becomes thick and sticky, gum and varnish from spontaneously in every engine. These dangerous residues and deposits can obstruct the passage of fuel and lubricant through the engine, putting strain on engine components and causing performance issues. These issues accumulate over time, causing parts to wear out prematurely. The simplest approach to avoid engine problems is to remove gum and varnish from your fuel and oil systems.

The following are seven frequent engine issues that millions of individuals face on a daily basis. Every issue stated can be avoided or reduced by periodically using polytron in your fuel and oil to clean your engine and prevent dangerous residues and deposits.

If your engine doesn’t start smoothly on the first turn of the key, or you have to pull a little engine start rope more than two or three times, it’s hard to start. It only gets worse from there. A healthy engine immediately fires and starts.

Common causes: Clogged fuel filter, dirty fuel injectors, dirty carburettor, failing ignition parts (coil, spark plugs and plug wires) and leaking fuel pressure regulator.

Rough idle

Idle is the rate an engine runs while in the park or without pressing the gas pedal or throttle. Most car and truck engines idle steady at 600 to 1200RPM. You will know you have a rough idle when your engine feels shaky, sounds unsteady, or gives a sense of being out of rhythm.

A healthy engine idles smoothly and quietly.

Common causes: Dirty fuel injectors, dirty carburettor, bad spark plug or plug wire and vacuum/air leak.

Engine stalls

A stall is when an engine dies out when it’s supposed to be running. Though the engine may start back up again, stalling usually means that the engine is not getting enough fuel or airflow. A healthy engine never stalls.

Common causes: Clogged fuel filter, dirty fuel injectors, dirty air filter, bad spark plugs or coil.


An engine with a hesitation problem will lag, stutter or stumble when you press down on the gas pedal or throttle. Hesitation can be any delayed power response when you need to accelerate.

Common causes: Clogged fuel filter, dirty fuel injectors, failing ignition parts (spark plugs or plug wires), vacuum/air leak, weak fuel pump and bad fuel

Loss of power

Loss of power describes an engine that still runs but does not work as hard as it should. Power loss is usually noticed when going up hills.

Common causes: Clogged fuel filter, dirty fuel injectors, dirty air filter, weak fuel pump and failing ignition parts (coil, spark plugs and plug wires).

Loss of MPG

Are you noticing a drop in fuel economy? Poor fuel mileage means your car or truck is not running as efficiently as it should.

Common causes: Dirty fuel injectors, low tyre pressure, dirty air filter, bad spark plugs or misfires, using the wrong motor oil, chamber deposits (pre-detonation, pings)

Bad fuel

Fuel degrades when exposed to oxygen (which makes it unstable). Gasoline suffers from the evaporation of light ignition vapours necessary for healthy combustion. If your fuel is old or came from an unreliable source, it might be causing your engine to run poorly.

Common causes: Engines that sit too long (varnish), water contamination, contaminated gas station fuel, vented fuel tanks or storage containers that sit too long

Helpful checklist

Here’s a checklist of the most common parts and issues to inspect when figuring out an engine problem. You can use these keywords and problem descriptions as a starting point for talking to a parts store, a mechanic, or learning how to work on your vehicle yourself. Take advantage of this guide–it will help you avoid engine problems.

Fuel filter: Fuel filters should be replaced every year (diesel) or 2years (gas engines). Is your fuel filter clean and new?

Ignition coil, spark plugs, and plug wires. If your car or truck has over 100,000 miles, have you replaced any of your ignition parts? Dirty intake valves: Don’t let carbon deposits form on your intake valves. You don’t need to be an expert to clean your own intake valves. Fuel pump: A fuel pump can last over 200,000 miles. Checking fuses, voltage, or testing fuel pressure are low-cost ways to keep tabs on your fuel pump. A clogged fuel filter will wear out a fuel pump prematurely.

Air filter: An air filter should last 15,000 to 30,000 miles. Is your air filter clean and new?

Is the Gas cap tight? (free): Ever get a check engine light because you didn’t turn your gas cap tight? Don’t panic! (Everyone forgets)

Vacuum/air leaks: Lots of do-it-yourself methods on how to find a vacuum leak. Check out YouTube.

Low tyre pressure (free): If you notice a drop in MPG, check your tyre pressure first before you start looking into other causes.

Check engine light: Most auto workshops are happy to read your engine code for a fee.

Oil restrictions and oil burning. Cleaning away oil restrictions can be as easy as pouring a can of polytron into your oil crankcase every interval.

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Source: PunchNG