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Hello everyone and welcome in this video we're talking about ten reasons why engines lose power over time and a huge

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I've organized this into four categories because internal combustion engines and more specifically gasoline internal combustion engines

really need four things in order for that smooth combustion to occur you need air you need fuel you need compression

And you need a spark

And so we're gonna walk through these different sections and talk about how your engine could start to lose power over time

Based on these four different parameters not working out so much in your favor so getting things started right off the bat with air

Filters, this is something super simple to fix

But you can get air filters that clog up with time as debris gets in there and so this can cause a pumping loss for

Your engine your engine has to work harder to bring in air because that filter is clogged up and it may not be able to

Pull in as much air and so as a result you can't make as much power

Number two is the throttle cable and this relates to cars with mechanical throttle cables this cable can loosen over time

It's a super simple fix to just retighten it it can stretch over time and as a result

You may not be able to open your throttle all the way and of course if you can't open your throttle all the way you're

Not going to be able to get in all of that air and therefore you're gonna be making less power now

That's talking about the intake side of it now

Let's kind of move to the exhaust side of it the air of course has to move through that engine nicely on both sides

So your catalytic converter can get clogged up over time from rich air/fuel mixtures. You know having the engine cold things like that

exhaust particulates can build up in there and you know the same thing can happen with your muffler number four you can have

Deposits build up in there reducing and restricting air flow through your exhaust causing additional pumping losses

And you know also these mufflers

as they age

Some of them can even rust and that internal piping can kind of fall apart and as a result it may not act as efficiently

As it once did number five is fuel injectors

And you know as a result of heat soak as a result of using poor fuel

These can get clogged up with time from particulates within the combustion chamber

Of course if they're clogged up

You know can cause

Misfiring it can cause your air fuel ratios to be thrown off and as a result you're going to be making less power

Also on the fuel side is the fuel pump and these can wear out over time and so you'll kind of notice this

Because on the low end they'll work just fine

And they'll be able to supply fuel and then as you get into those higher rpms with high loads or in you know higher loads

for a long duration

The fuel pump may start to struggle and not be able to meet that fuel demand and so you know you can kind of notice

That if you're going up hills if you're in that high load higher rpm scenario

And you're struggling to get power it may be a failing fuel pump that can't quite deliver that fuel quantity anymore

Number seven is piston rings wearing down, and this is one of those things

That's a bit more challenging

To replace because it requires stripping down the entire engine to get to those piston rings in order to replace them if you were needing

To do that basically a whole engine rebuild but these piston rings will wear against the wall over time and over time as they wear

You can have increased blow-by and as a result you're getting less

Compression so one thing you can really do to help prevent

Your piston rings from wearing is just make sure you stay on top of your oil change intervals to make sure that those piston rings

Are well lubricated,

against your cylinder walls.

Number eight and this one's going to play a big role in how much power you can create

And this is deposits on your valves and more specifically your intake valves so over time

you know especially in direct injection engines

Which don't have port injection where that fuel is being sprayed over the intake valve and constantly cleaning it off

And you have your positive crankcase ventilation system where you're sending oil back through your intake and then on to your intake valves

Or it can start to build up those deposits on it

so this can cause a lack of

Compression because that intake valve may not be able to properly seat in that valve seat and it can also cause

Backfiring you know as you're compressing back in you may be able to squeeze some of that air fuel

Past that intake valve and as a result you know you're not gonna have good compression

You could have backfiring if that

Combustion is able to exit past that valve and of course it also plays a role with your air and fuel as it can cause

Additional restriction for air flow to come by and it can mess with your air fuel ratios

Number nine is spark plugs and these can get fouled up with time from fuel, from oil, from carbon deposits,

And this can cause an inconsistent spark and of course misfiring

So you of course need your spark plugs in good working order in order to make peak power and finally number 10

We're going to talk about knock so as you start to have these deposits


Within your cylinder walls and on your Pistons these deposits can heat up and cause knock and so if you do start to have knock

In an engine the first thing your engine's going to want to do is

Retard the timing so fire that spark plug later and as a result if it needs to do that to

compensate and to make sure you don't have knock you're going to be losing power because it's firing that spark plug later and again a

Massive, thank you to if you haven't yet, please check out the link in the video description

Nathan the company's CEO and fellow s2000 owner has shown a lot of love for engineering explained

so I'd love to show that love back to his website with all of you guys.

As always, if you have any questions or comments feel free to leave them below. Thanks for watching!

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