Vw tiguan spark plugs

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Symptoms of Bad Spark Plugs Volkswagen Tiguan

Bad spark plugs can cause many problems with your Volkswagen Tiguan.  Bad spark plug symptoms may be subtle, or incredibly noticeable.

The basic design and task of the spark plug has changed little over the last 100 years.  They sit on top of the combustion chamber and ignite the air/fuel mixture and start the power stroke of the engine.

Something that has changed about modern spark plugs is that many of them use iridium, don’t need gapped, and can last for 100k miles with little issue.  That being said, they still can go bad.  The good news is, that if you do need replace them all, they are very affordable.


Common Bad Spark Plug Symptoms:  Volkswagen Tiguan

There are a lot of potential symptoms related to bad spark plugs in your Tiguan.  We always recommend using an OBDII scanner to pull your trouble codes if you have a check ending light on.  It can really narrow your search down.  If you don’t have one, your local parts store will do this for you for free.

It is also worth noting, that the symptoms of bad spark plugs will be almost the same as any other bad part in the ignition process.  This means that something such as bad coil packs will produce the same results and feel as bad plugs.

Volkswagen Tiguan Bad Spark Plug Symptoms


Check Engine Light

The check engine light is one of the most common symptoms of bad spark plugs. More often than not, your engines computer will be able to detect bad spark plugs in your Tiguan. 

There are several misfire related trouble codes.

  • P0300–  this trouble code indicates that there is a random misfire. A random misfire means is that a misfire is detected, but the ECM is not able to determine which one it is coming from, or the misfire is occurring randomly.
  • P0301 through P0312-  these trouble codes indicate that there is a misfire in one specific cylinder.  For example, P0304 is for a misfire in cylinder 4 in the firing order.  This makes diagnosing the misfire a bit more straightforward.

There are other misfire related codes as well. 


Accelerates Slower than Normal

As you ask your Tiguan for more power, the fuel and ignition systems respond.  If acceleration has diminished, it should be felt.  The less cylinders that your engine has, the more that one cylinder not firing properly will have.  If you have one or more bad spark plugs, it’ll cause the acceleration of the Tiguan to be weaker.


Fuel Economy

The less efficient the combustion of your engine, the more fuel is going to be wasted.  This leads to a decrease in fuel economy.  When you take your vehicle in for a tune up due to decreased fuel economy, checking the spark plugs (and ignition system in general) is going to be one of the very first places that a mechanic is going to look at.



Misfiring is the most common symptom of bad spark plugs.  All of the other symptoms are a result of the misfiring itself.  The real question is, what is causing the misfire?  There is more to your Tiguan’s ignition system than just the plugs.  There’s also coil packs and spark plug wires.

There are also non ignition related circumstances that can cause a misfire.  That would include lack of fuel pressure, bad fuel injectors, or even a timing chain (or belt) that has jumped.  Since there are so many reasons that a vehicle can misfire, we recommend testing for trouble codes first.

Here’s a good video from YouTube on identifying a bad spark plug.


Rough Idling

When a spark plug is misfiring, it is often most pronounced at idle speed.  This is because when the engine turns slower, it is easier to detect.  You’ll feel a rough vibration.


Conclusion:  Bad Spark Plugs Volkswagen Tiguan

Be aware that almost all symptoms of a bad spark plug in your Tiguan could also be other issues with the ignition system as well.  Good luck diagnosing the problem  Feel free to leave a comment below if there is anything that you would like to add.

Categories Volkswagen TiguanSours: https://www.700r4transmissionhq.com/bad-spark-plug-symptoms-volkswagen-tiguan/

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Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Volkswagen Tiguan Spark Plug Replacement is $196 with $101 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2018 Volkswagen TiguanL4-2.0L TurboService typeSpark Plug ReplacementEstimate$419.38Shop/Dealer Price$490.48 - $663.29
2019 Volkswagen TiguanL4-2.0L TurboService typeSpark Plug ReplacementEstimate$307.39Shop/Dealer Price$370.51 - $537.32
2016 Volkswagen TiguanL4-2.0L TurboService typeSpark Plug ReplacementEstimate$307.39Shop/Dealer Price$370.51 - $537.32
2015 Volkswagen TiguanL4-2.0L TurboService typeSpark Plug ReplacementEstimate$307.39Shop/Dealer Price$370.49 - $537.28
2013 Volkswagen TiguanL4-2.0L TurboService typeSpark Plug ReplacementEstimate$296.59Shop/Dealer Price$357.02 - $515.75
2017 Volkswagen TiguanL4-2.0L TurboService typeSpark Plug ReplacementEstimate$307.39Shop/Dealer Price$370.51 - $537.32
2009 Volkswagen TiguanL4-2.0L TurboService typeSpark Plug ReplacementEstimate$301.59Shop/Dealer Price$361.87 - $520.48
2014 Volkswagen TiguanL4-2.0L TurboService typeSpark Plug ReplacementEstimate$301.59Shop/Dealer Price$362.24 - $521.14

Show example Volkswagen Tiguan Spark Plug Replacement prices

What are spark plugs and how do they work?

Spark plugs are one of the key components of your vehicle’s ignition system. They ignite gasoline and air inside of your engine. This gives your engine the power to propel you down the road. The spark plug takes high voltage electricity from the ignition coil and creates a spark at just right moment during the engine’s combustion cycle. This gives the engine the best mix of power, fuel economy and low emissions. However, the electrode at the end of the spark plug eventually wears out and can cause performance issues.

Spark plugs-MATROX-1

When should you replace spark plugs?

Replacement should follow the vehicle maintenance schedule. This will be listed in the vehicle’s owner’s manual. Some cars require regular replacement at 30k, 60k or 100k miles. It is possible in some cases that a spark plug might fail before the service schedule, but it’s not typically common.

Avoiding spark plug replacement can cause:

  • Difficulty starting your car.
  • Check engine light for a misfire code.
  • Flashing check engine light during acceleration for misfire, this can cause engine damage.
  • Reduced fuel economy and/or power.
  • Rough idle and/or unexplained engine vibration.
  • Failed State emission testing.

Even if only one spark plug is found to be faulty, they should always be replaced in sets. Most engines will require 4,6, or 8 spark plugs.

How do mechanics replace spark plugs?

Spark plugs are threaded into the engine’s cylinder head(s). Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. The mechanic will:

  • Have the correct spark plugs on hand for your vehicle
  • Pull any diagnostic trouble codes that may be related to worn spark plugs.
  • Remove the original spark plugs and look at removed spark plugs for any clues indicating engine mis-operation exists; such as oil burning, excessively rich mixture, pre-ignition damage etc. Inform owner of any found unusual conditions.
  • Install new plugs using a torque wrench.
  • Finally, a road test of the vehicle to confirm normal operation.

Is it safe to drive with worn spark plugs?

Yes, but spark plugs that are worn enough to cause engine-misfiring have the potential to cause engine damage and overheating of the catalytic converter. Regardless of the age of the plugs, or mileage, if the engine misfires or runs poorly, the plugs should be inspected for defects. Generally, spark plug failure will not keep the engine from running, but in cases of extreme wear, you may experience a limitation in the speed at which you can drive the car. If the maintenance schedule says the plugs should be replaced, it is best to do so promptly.

When having spark plugs replaced keep in mind:

  • High-speed driving may accelerate spark plug wear. Consider earlier than required inspection and tune-up if you operate the car in severe conditions.
  • Plugs should always be promptly replaced per the manufacturer maintenance schedule even if they appear to be working perfectly.
  • If your vehicle is equipped with spark plug wires (as opposed to a coil-on-plug system), the wires should be replaced at the same time. This may increase the cost of your repair.
  • It is possible that when doing a spark plug replacement, your vehicle may also need additional parts like ignition coils, this will add to the repair cost.
  • Some engines require that the intake manifold be removed while replacing spark plugs. This may increase the parts and labor cost for the repair.
  • Leaking valve cover gaskets, which have let oil get in contact with the spark plugs, coils or wires, may be the cause of ignition system issues. Valve cover gaskets will need to be replaced in addition to the spark plugs, wires or coils. This will add to the repair cost.

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This automotive maintenance tutorial was specifically written to assist owners of the first generation (2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and 2017) Volkswagen Tiguan SUV in checking or changing the engine spark plugs in the 2.0 liter TSI turbocharged inline four cylinder motor.

Owners of other VW or Audi vehicles such as the Jetta, Passat, CC, Atlas, Touareg, Golf, Beetle, A3, S3, RS 3, A4, S4, A5, A6, S6, A7, S7, RS 7, A8, Q3, Q5, TT and Q7 may also find these DIY instructions to be helpful.'

The OEM laser platinum spark plugs in this 2016 Tiguan were part number VW 06H905601A or 06H 905 601 A.

The OEM ignition coils part number is VW 07K905715F (also known as 07K 905 715 F).

The tools needed to complete this procedure include a plastic pry bar tool, a 5/8" spark plug socket, an extension bar, a 3/8" drive ratchet and a tube of dielectric grease.

Lower the socket into the well and push it into place over the old spark plug.

Loosen the spark plug in the counterclockwise direction.

If you have trouble removing the old spark plug, try spraying in a small amount of penetrating oil such as PB Blaster, Liquid Wrench or WD40 into the spark plug well and wait five to ten minutes.

Once the old spark plug is loose, detach the 3/8" drive ratchet.

Spin out the spark plug the rest of the way by hand with your fingers on the extension bar.

Carefully lift the old spark plug straight out of the well.

Detach the old spark plug from the socket.

Inspect both sides of the old spark plug.

If the old plug is dark black or grey and covered in soot or oil, the engine might have an oil consumption problem and should be inspected by a professional mechanic.

If the old spark plug looks ashy white, the plug may have been exposed to high temperatures due to overheating.

The original (OEM) spark plugs in this 2016 Tiguan were part number VW 06H905601A or 06H 905 601 A (NGK M56P NG4).

A few other compatible replacement spark plugs with their part numbers are as follows: NGK PFR7S8EG, Autolite XP3923 Iridium and Champion KC8WYPB4 (9805).

Apply a very small amount of dielectric greaseto the top of the old spark plug where it will come in contact with the ignition coil. The dielectric grease will help ensure a reliable electrical connection.

Push the new spark plug into the socket and carefully lower it into the well.

Spin in the new spark plug in the clockwise direction until it makes contact with the cylinder head.

Attach the 3/8" drive ratchet and tighten the new spark plug to just a fraction of a turn past hand tight. You should feel the new crush washer collapse as you are tightening it.

(If you are re-installing the old spark plugs after checking their condition, just barely tighten them past finger tight.)

Double check that the new spark plug is tight before moving on to the next steps.

Sours: https://www.paulstravelpictures.com/Volkswagen-Tiguan-Spark-Plugs-Replacement-Guide/
VW/Volkswagen Audi Tiguan GTI Passat Beetle 2.0T Install \u0026 Change Spark Plugs \u0026 Ignition Coils

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