Enjin itu rosak.

In Malay, demonstratives like ini (this) and itu (that) usually come after the noun.

• enjin itu = that engine / the engine
• kereta ini = this car

So the word order is different from English.

It can mean either, depending on context.

• that engine when you are contrasting it with another one or pointing it out
• the engine when you are referring to a specific engine already known in the conversation

Malay itu often works a bit like both a demonstrative and a definiteness marker in everyday use.

Malay often leaves out the verb to be in simple sentences like this.

So:

• Enjin itu rosak. = The engine is broken.

There is no need to add a separate word for is here. This is very normal in Malay.

It is often taught as an adjective meaning broken, damaged, or not working, but in Malay it behaves a lot like a stative verb too.

So rosak can describe a condition directly:

• Telefon itu rosak. = The phone is broken.
• Mesin itu rosak. = The machine is broken.

You do not need a separate word meaning is before it.

Yes. Depending on context, rosak can refer to:

• something physically damaged
• something not functioning properly
• something that has broken down

So Enjin itu rosak could mean:

• The engine is broken
• The engine is damaged
• The engine has broken down

Context tells you which nuance is intended.

Usually, no. That sounds unnatural in normal Malay.

In simple sentences with adjectives or states, Malay normally does not use adalah:

• natural: Enjin itu rosak.
• unnatural/formal-sounding in the wrong way: Enjin itu adalah rosak.

Adalah is used in more limited, formal structures, not in basic adjective predicates like this.

Yes, you can.

• Enjin itu rosak. = The/that engine is broken.
  
  • specific engine
• Enjin rosak. = An engine is broken / engines are faulty / the engine is broken, depending on context

Without itu, the sentence is less specific.

Yes.

The structure is:

• Enjin itu = the subject (the/that engine)
• rosak = the predicate (broken / damaged / not working)

So the sentence is essentially:

• [Enjin itu] [rosak].
• [The engine] [is broken].

Not in this sentence.

Here, itu is a demonstrative/determiner attached to enjin, so it means that or helps make it definite as the.

It is not the pronoun it here.

Enjin is pronounced roughly like en-jin, and it is a Malay borrowing of engine.

A simple English-friendly approximation is:

• EN-jin

The j in Malay sounds like the j in jam.

A rough pronunciation is:

• RO-sak

with the stress usually fairly even, though many learners naturally say the first syllable a bit more strongly.

A simple approximation is:

• roh-sak

The r in Malay is often trilled or tapped lightly, depending on the speaker.

Yes, if you mean this engine instead of that/the engine.

• Enjin ini rosak. = This engine is broken.
• Enjin itu rosak. = That/The engine is broken.

So ini and itu work the same way grammatically; they just differ in meaning.

It is completely normal everyday Malay.

Enjin itu rosak is a natural, simple sentence that a speaker might really use in conversation, for example when talking about a car problem.