Mababa ang presyon ng gulong; suriin ito ng mekaniko.

This is a very common Filipino sentence pattern:

adjective + ang + thing being described

So:

• Mababa = low
• ang presyon ng gulong = the tire pressure

Literally, it is something like Low is the pressure of the tire.
In natural English, we say The tire pressure is low.

This adjective-first pattern is very normal in Filipino:

• Mataas ang presyo. = The price is high.
• Mabigat ang kahon. = The box is heavy.
• Mainit ang kape. = The coffee is hot.

Ang marks the focused or topic noun phrase of the clause.

In Mababa ang presyon ng gulong, the thing being talked about is presyon ng gulong.

So:

• Mababa = the description
• ang presyon ng gulong = the thing receiving that description

You should not think of ang as exactly the same as English the. Sometimes it overlaps with the, but grammatically it is doing something different: it marks the noun phrase that is in focus/topic position.

Yes. Ng gulong means of the tire or the tire’s.

Here:

• presyon = pressure
• gulong = tire
• presyon ng gulong = tire pressure / pressure of the tire

This is a very common Filipino structure:

noun + ng + noun

Examples:

• pinto ng bahay = door of the house / house door
• kulay ng kotse = color of the car
• gulong ng bisikleta = tire of the bicycle / bicycle tire

So presyon ng gulong is simply a possessive-type relationship.

It is a commonly used borrowed word, ultimately from Spanish/English influence. In modern Filipino, many technical or everyday terms are loanwords, and presyon is perfectly normal.

Depending on context, people may also say things like:

• pressure
• hangin ng gulong in casual speech when talking about air in a tire

But presyon ng gulong is clear and natural, especially in a more formal or instructional sentence.

Suriin comes from the root suri = examine, inspect, check.

The form suriin is an -in verb form, often used for object-focus commands or actions directed at something.

So in this sentence:

• suriin ito = inspect/check it

This kind of form is very common in instructions:

• Basahin ito. = Read this.
• Buksan ang pinto. = Open the door.
• Ayusin mo ito. = Fix this.

With suriin, the emphasis is on the thing being checked.

Because ito is the thing being acted on: check it.

So:

• suriin = check/inspect
• ito = this/it

Together: suriin ito = inspect it

This word order is very typical in Filipino. The verb often comes first, followed by the object or pronoun:

• Basahin mo ito. = Read this.
• Dalhin mo iyan. = Bring that.
• Ayusin nila iyon. = They should fix that.

In context, ito most naturally refers to the problem item that needs checking—most likely the tire or the low-pressure condition.

In real-life usage, Filipino often allows this kind of practical reference when the context is obvious. If you are at a repair shop and talking about a tire, ito is enough.

If someone wanted to be more explicit, they could say:

• suriin ang gulong = inspect the tire
• suriin ang presyon ng gulong = inspect the tire pressure

But suriin ito sounds natural when the referent is already clear from context.

This is one of the most important grammar points in the sentence.

Because suriin is in an object-focus form, the thing being checked is the focus, not the doer. The doer/agent is then marked by ng.

So:

• suriin ito ng mekaniko = let a mechanic inspect it / have a mechanic inspect it

Here:

• ito = the thing to be inspected
• ng mekaniko = by a mechanic

This matches a common Filipino pattern where, in object-focus clauses, the agent is marked by ng.

Compare the general idea:

• Suriin ng mekaniko ang gulong. = The mechanic should inspect the tire.
• Susuriin ng mekaniko ang gulong. = The mechanic will inspect the tire.

So ng mekaniko does not mean the mechanic is unimportant; it is just the marking required by the verb pattern being used.

More or less, yes. A very literal breakdown would be:

• suriin = inspect
• ito = it
• ng mekaniko = by a mechanic

But the most natural English translation is usually:

• Have a mechanic inspect it.
• Let a mechanic check it.
• A mechanic should inspect it.

So the Filipino structure does not always map word-for-word onto the most natural English wording.

Yes, the second clause is an instruction or recommendation.

The sentence has two parts:

1. Mababa ang presyon ng gulong = The tire pressure is low.
2. suriin ito ng mekaniko = have a mechanic inspect it

So the overall feeling is:

The tire pressure is low; have a mechanic check it.

In practical usage, this sounds like advice, a warning, or an instruction.

Because the sentence is not directly saying you check it. Instead, it is saying that a mechanic should be the one to do the checking.

If you wanted to tell someone directly You check it, you might say:

• Suriin mo ito. = Check it.

But here, the intended doer is mekaniko, so the sentence uses:

• suriin ito ng mekaniko = have a mechanic inspect it

So the absence of mo makes sense.

Yes, and that is a very useful comparison.

• Suriin ito ng mekaniko = Let a mechanic inspect it / A mechanic should inspect it.
• Ipasuri ito sa mekaniko = Have it inspected by a mechanic / Take it to a mechanic for inspection.

The second version, ipasuri ito sa mekaniko, strongly suggests causing someone else to do the inspection or bringing it to that professional.

So both are possible, but they highlight slightly different things:

• suriin ... ng mekaniko focuses on the mechanic as the agent of the checking
• ipasuri ... sa mekaniko focuses on arranging for the mechanic to do it

The semicolon connects two closely related clauses:

• statement of the problem: Mababa ang presyon ng gulong
• recommended action: suriin ito ng mekaniko

It works like this in English too:

• The tire pressure is low; have a mechanic inspect it.

In everyday writing, a period would also be possible:

• Mababa ang presyon ng gulong. Suriin ito ng mekaniko.

So the semicolon is mainly a punctuation choice showing that the two ideas are closely linked.

Yes. Gulong can refer to a wheel or a tire depending on context.

In this sentence, because it talks about presyon (pressure), the meaning is clearly tire, since tires have air pressure.

So:

• presyon ng gulong = tire pressure

Context usually makes the intended meaning clear.

In normal speech, you would usually stress the important information words:

Mababa ang presyon ng gulong; suriin ito ng mekaniko.

A natural rhythm would highlight:

• mababa
• presyon
• gulong
• suriin
• mekaniko

Function words like ang, ng, and ito are usually less stressed unless you want special emphasis.

For example, if you wanted contrast, you might stress mekaniko to mean a mechanic should check it, not just anyone.