How many spark plugs does my car have, so I can replace them.

It is shaking in idle. EPC light is on and the engine light blinks sometimes. I think it is the water pump and something else.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hello Your Audi Quattro should be equipped with a V6, meaning it has 6 cylinders in the V formation. You should replace all 6 spark plugs when changing them. If warning lights are coming on, you will want to have the vehicle scanned for diagnostic troubleshooting codes. Anytime a warning light illuminates, it means there is a code set by the computer. These codes can be read with a scan tool at your mechanic or dealership, as well as at most local automotive parts stores. This will give you more insight into what the computer is detecting. The EPC light typically tells you that the drive-by-wire (or throttle) is malfunctioning somehow. Again, to truly know what the warning lights are trying to tell you, you will want to have the vehicle scanned. You can take any possible repairs from there.

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Most V6s have six spark plugs — one for each cylinder. However, some have a twin spark engine with two spark plugs per cylinder — making it twelve in total. To confirm, check your owner`s manual to tell the number of spark plugs and type of engine you have. Or just visually inspect your engine bay for an answer.
Worn/failed spark plugs, coil packs, or spark plug wires can trigger your check engine light to come on. In today`s cars, say Firestone Complete Auto Care technicians, if a plug starts to fail then the most obvious event should be the check engine light coming on or even flashing.
How many spark plugs does a car need? Only cars with internal combustion engines need spark plugs, and cars get one spark plug per cylinder. For example, a four-cylinder internal combustion engine has four spark plugs, while an eight-cylinder engine has eight spark plugs.
On the vast majority of occasions, an engine will have one spark plug per cylinder, with most cars on the road having four cylinders/four spark plugs. Exceptions include HEMI engines (commonly found in muscle cars) which will have two plugs per cylinder.
There are six plugs. The spark plug was removed.
A V6 engine has six cylinders, while a V8 engine has eight cylinders. V6 engines typically have better fuel economy than a V8, while V8 engines generally have more power than V6 engines.
Dirty or Old Spark Plugs

If your engine is misfiring, you may be able to fix the problem easily by replacing your spark plugs. Spark plugs are relatively easy to remove from engines and inspect for damage, and at less than $25 a piece, they are relatively cheap to replace, too.

Even if you`re not having problems you`ll still want to have your spark plugs changed out at every 30,000 mile interval. For most drivers, that will mean that you`re due for spark plug service once every 2-3 years!
Types of Spark Plugs

Depending on the number of cylinders your engine has will determine how many you need. It`s one-for-one. For example, if you drive a 4-cylinder engine, you need four spark plugs. To go along with engine fit, most spark plugs get made from different types of metal, some being cheaper than others.

Set of 6 Ignition Coils for 3.6L V6 Buick, Cadillac, Chevrolet, GMC, Saturn & 2.8L Saab (see fitment)
A standard vehicle would usually have four cylinders and four spark plugs. That said, there are exceptions when it comes to HEMI engines, which are usually found in muscle cars. One cylinder will require two spark plugs. If you`re still unsure after looking at the engine and its cylinders, check the owner`s manual.
The number of spark plugs your car has depends on how many cylinders there are. If you have a four-cylinder engine, you will have four spark plugs, and so on.
For some V6 engines (6 cylinder), the intake manifold has to be taken out to access the bad spark plug, taking the labor costs as high as $260-$320 for the vehicle. In total, spark plugs replacement can cost you anywhere from $100-$250 on the low end and $250-$500 on the high end (usually for a V6 engine).
Most V8s have eight spark plugs — one per engine cylinder. However, twin spark engines with no distributor, and newer HEMI engines with MDS (Multiple-Displacement Systems), will have two spark plugs per engine cylinder — so sixteen in total.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Spark plug chaos. Rubber stoppers are preventing the spark plugs from coming out.
ANSWER : Hi there. Try using a pair of small needle nose pliers to pull off the rubber boots from the spark plugs. As you pull, twist the rubber boots to break them free. If you cannot get the rubber boots off, then try using some mineral oil on the boots to aid them off, then clean off the oil with soap and water with degreaser. If you need further assistance with removing the boots from the spark plugs, then seek out a professional, such as one from Your Mechanic, to help you.

Engine will not stay started. I have replaced idle control valve map sensor spark plugs spark plug wires no check engine light is
ANSWER : You have a problem with the distributor assembly. I recommend replacing the distributor assembly. This will replace all the possible sensors and coil for the ignition and fix the problem you have.

Just replaced spark plugs and wires and my car is still miss firing and I can’t pin point why and my old spark plug is oil covered
ANSWER : Hello there, many faults will cause your 1988 Ford Contour to have a misfire even after the spark plugs were replaced. When oil is seen on the spark plug this indicates that the valve cover is leaking onto the plugs. When this happens it fouls the plugs and can cause a misfire. Until the oil leak is addressed the spark plugs will continue to become fouled. If the misfire persists there are many potential causes such as the plug wires, fuel pump, vacuum leak, oxygen sensor, MAF sensor, or the cap & rotor. A qualified Technician such as one from YourMechanic will be able to diagnose your misfire fault and make any repairs required to resolve the issue.

After part replacements, spark plugs do not work – 1996 Lexus LX450
ANSWER : If you have a Check Engine Light on, first check for those codes to determine what engine management thinks is going on. If no trouble code, check the ignition fuse behind the driver side kick panel (carpeted panel at foot level on the left – for left-hand drive vehicles). If the engine is spinning quickly, and doesn’t appear to be meeting any resistance (as a motor with good compression would have), you may have a broken timing belt. If so – STOP, call a professional mechanic, like a certified technician from YourMechanic for help.

My car is shaking at idle and is losing power in the low end service engine soon light is flashing.
ANSWER : Engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft position sensor, spark plugs, spark plug wires or ignition modules not working properly. When the misfire results from a fuel related issue, this is commonly related to a lean fuel condition (lack of sufficient fuel supply to the motor). Fuel related misfires can be caused by many different things such as low fuel pressure, faulty or dirty fuel injectors, a faulty O2 sensor, a dirty or failing mass air-flow sensor, a faulty or dirty idle air control valve or a vacuum or intake leak. When the fuel supplied to the combustion chamber is insufficient, this results in an ignition (spark) that is igniting a less than balanced load of fuel and air. This results in a misfire or an explosion in the cylinder that is much less powerful than the other cylinders. This creates a loss of power that resonates throughout the motor additionally causing other problems with ignition and fuel timing. Due to the number of different things that may cause an engine misfire, the quickest and easiest way to diagnose this type of problem is to hook the vehicle up to a scanning tool which will download any potential fault codes that may have registered in the vehicle’s computer as a result of the poor running condition. I would recommend having an expert from YourMechanic come to your location to diagnose your misfiring problem.

Engine light fault. There was a bad spark plug and a failed ignition coil. Replaced both the coil pack or spark plug.
ANSWER : Hi there. If the light is coming on then shutting off and returning on, then if the issue is for the same coil, there could be an issue with the wiring on the coil plug. Check the wiring on the coil plug and see if the wires are split, broken, or burned. If there is nothing wrong with the plug, then the main engine harness has an issue / short and may need replaced. If you need further assistance with your ignition system, then seek out a professional, such as one from Your Mechanic, to help you.

My car will not turnover at all! no spark not even does it try to start up i have replaced the distributer starter spark plugs
ANSWER : If the starter motor is not functioning (that is, if the starter is not engaging the flywheel and turning the engine over), either there is no power to the starter or there is power but the starter itself has failed internally.

A qualified technician, such as one from YourMechanic, would first test for voltage (as well as voltage drop) at the starter when you actuate the starting circuit. If no voltage, that is if the circuit is open, the break in the starting circuit is simply traced.

If there is power to the starter and yet the starter will not function, the starter is condemned and thence replaced. YourMechanic can perform these tests to properly diagnose your starting issue right at your location.

So I need a total tune up on my car! I was wondering if I could replace my spark plugs now and wait till next week to replace the coils?
ANSWER : Hi, thanks for writing in. Yes, that will not be a problem at all. If the coil is tested and is within spec there is no reason to replace it at all – I recommend using it. A fouled spark plug doesn’t necessarily mean the coil is bad. It would be worth testing the coils before buying something you don’t need.

If you would consider, YourMechanic can send a certified technician to you and troubleshoot your ignition system and service your ignition coils and spark plugs as necessary. Good luck!