What does the bold part mean?
There's something wrong with the engine of my car. Can you have look?
Welcome to the forum. :hi:
The first sentence means "My car has a problem but I don't know what the problem is". The speaker knows that the car doesn't seem/feel right, but can't work out why.
Note my corrections above. You must start every sentence with a capital letter. Don't put a space before a full stop. Remember to put a question mark at the end of a question.