Question about 2001 Hyundai Sonata

1 Answer

What causes my Hyundai Sonata to Knock on mornings first start, Knock lasts for just a few seconds. I live in the tropics, so it's not cold here. Sometimes it also smokes when idling.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 4,793 Answers

If the oil is worn out then you will suffer no preesure,hence the knock,try changing the oil and filter.thenn if the knock persists,you may need to rebuild your engine.

Posted on Oct 09, 2010

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

What causes start up problems on a 2006 Hyundai sonta

Hot or cold engine ? or doesn't matter ? A few thing's could , fuel related problems , MAP or MAF sensors , coolant temp sensors , crank , cam sensors . Is the money light on ? (check engine ) $$$$$

Mar 16, 2017 | 2006 Hyundai Sonata

1 Answer

My car could not start, my brake next to accellarator felt hard I had to pump the brake a few time the start carup otherwise car could not start

ther brake will be hard as the servo has lost its vacumn,best advise i can give here is to ask a local mechanic to have a look as it might just need the spark plug gaps resetting -25th- if the gaps are too wide then it will have a job to start especially on a cold morning

Nov 03, 2013 | 2011 Hyundai Sonata

1 Answer

When I turn on the car, there is a high pitch squeal. It last for 10 seconds and then goes away. It usually only happens in cold or rainy weather. Do you know what is going on and what I should do about...

It could be as simple as a loose or worn alternator belt that needs replacement or the cars charging system is not putting enough charge back into the battery under normal running so when first started in the morning the battery requires more power from the alternator which in turn puts more load on the alternator belt, Get the belt checked first then get the battery and charging checked, the first item being the cheapest to repair. Hope this helps.

Dec 05, 2010 | 2000 Hyundai Sonata

1 Answer

2006 Hyundai Tiburon Question!

I live in Northern Ontario and I use my Tiburon as my 'winter beater'. Despite all of the problems with the car, mine starts reasonably well in very cold weather.

Getting your battery checked was a good start. The next step is to check your starter motor:

If the starter motor is failing, then it will just 'click' and not try to start the engine at all. Then, after a few attempts, the starter will suddenly work and start the engine just like normal. If this is the case, then get your starter replaced.

Feb 03, 2010 | 2006 Hyundai Tiburon

1 Answer

Heater does not work

temp control actuator,may be called the door blend actuator

Feb 03, 2010 | Hyundai Motor 2004 Sonata

2 Answers

My hyundai is making a rattling noise

that sounds like what we call "spark knock" that occurs when u accellerate quickly, but yes it will go away in a few seconds when the computer detects this condition. with the economy the way it is it will be more expensive, but try running higher octane gasoline in it, should cure this condition. hope that helped you!!

Jul 09, 2009 | 2006 Hyundai Sonata

1 Answer

Sonata losing power

Hmm, it's hard to diagnose without being there in person. Whatever help I can give you is this: The 9 causes of why an engine does not exert as much power as it should to take off right away as soon as you press down:

Good luck!

May 25, 2009 | 1994 Hyundai Sonata

1 Answer

Power Antenna gets stuck; Motor makes noise while going in/out

I have this problem quite often and I extend the antenna and spray it with wd40.. Turn the radio on and off a few times and wipe the excess wd40

Jan 02, 2009 | Hyundai Motor 2002 Sonata

2 Answers

Engine knock noise on cold startup

these 3.3l engines are equipped with timing chains. if vehicle has prolonged down time, typically more than 4 hours, vehicle makes a chatter until the timing chain tensioners put tension on the chain. you will need them replaced.

Nov 29, 2008 | 2006 Hyundai Sonata

Not finding what you are looking for?
2001 Hyundai Sonata Logo

291 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hyundai Experts


Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8195 Answers

Are you a Hyundai Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides