Ford Ignition Coil Bolt Size? The 192 Top Answers

CB-2 coil bolt

The CB-2 spool studs are available in diameters from 1/2″ to 1-1/2″ for use with spool ties, spool inserts and other Meadow Burke spool threaded products. Spiral screws are manufactured with fast-acting, self-cleaning spiral threads and are available in the required lengths. Spiral bolts can be supplied with an integral forged head or with a hex nut welded to a length of continuous spiral rod. The standard thread length of the integral forged head spiral screw is 4″ on 1/2″ diameter and 4-1/2″ on all other sizes.

Using waterproof, stain-resistant grease applied to the bolt shank will aid in bolt removal. Note that spiral screws are subject to wear and abuse and should be constantly inspected for wear, cracks, bends, overstressing, etc. If there are signs of these types of problems, the screw should be discarded.

WARNING: Minimum coil penetration is extremely important and must be maintained when threading coil studs into other coil threaded products. Safe working loads depend on maintaining the appropriate minimum coil penetration; Failure to do so may result in premature coil failure and compromise worker safety. Refer to table for Safe Working Loads and Minimum Coil Penetration Lengths.

performance data

Ignition coil: problems, replacement timing, repair costs

Sectional view of the ignition coil in a Ford EcoBoost engine.

Problems with the ignition coil

Can you drive with a defective ignition coil?

Safety Precautions for Ignition Components

How to diagnose a faulty ignition coil

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Replacement of the ignition coil

On-plug ignition coil

An ignition coil is part of the vehicle’s ignition system. It converts 12V battery power to high voltage to create a spark at a spark plug. The spark ignites the air-fuel mixture in the engine cylinders. Most modern cars have one ignition coil per cylinder. Typically, the coil is installed just above the spark plug, as on this Ford engine in the photo. This structure is called coil-on-plug. In some cars, ignition coils for all cylinders are combined in one coil pack. On older cars with distributors, a single coil is used for all cylinders. Look at this example of a single ignition coil in an air-cooled Volkswagen engine. Ignition coils often fail in many cars. Symptoms of a failed ignition coil include engine shaking, stalling, and lack of power (backfire). The Check Engine light keeps flashing or stays on on the dashboard. On vehicles with a single ignition coil or coil pack, a bad coil (or coil pack) can result in the engine not starting. An ignition coil is more likely to fail if the spark plugs have not been replaced for a long time. This is because an old spark plug has a larger gap between the electrodes and consequently higher electrical resistance. This increases the load on the ignition coil. A bad ignition coil often causes the engine to misfire. On some cars, driving with an engine that misfires can cause the catalytic converter to overheat and melt. Replacing the catalytic converter is expensive. We also know of cases where a shorted ignition coil has damaged the engine computer (PCM). Some automakers advise not to drive if your engine is misfiring; others recommend driving very moderately and having your vehicle checked over as soon as possible. See the vehicle owner’s manual for details. An ignition coil generates extremely high voltages that are hazardous to health. When working with ignition components, follow the safety precautions in your car’s service manual. We have posted several links in this article to get subscription-based access to the factory service manual. The first step in inspecting or replacing an ignition coil is to disconnect the negative battery cable. First, your mechanic will scan the engine computer for trouble codes. The trouble code can indicate which cylinder has misfired or even which coil has failed. For example, code P0301 means that cylinder number one is misfiring. Code P0351 is primary/secondary malfunction of ignition coil circuit “A” (cylinder 1). Thereafter, an ignition coil must be checked according to the procedure in the service manual. At the bottom of this post, we’ve posted several links that give you access to a maintenance manual on a subscription basis. Typically, an ignition coil inspection involves measuring the resistance between specific ignition coil terminals. If the resistance is outside of specifications, the ignition coil needs to be replaced. To identify a bad ignition coil, mechanics sometimes swap the suspect coil with a known good coil from another cylinder to see if the misfire moves with the coil or stays on the same cylinder. For example, a mechanic with code P0302 (Cylinder 2 Misfire) can swap the ignition coils on cylinder 2 and cylinder 3 and run the engine for a short time. If the trouble code changes from P0302 to P0303 (cylinder 3 misfire), the ignition coil that was originally on cylinder number 2 is defective. It is also recommended to replace ignition coils when they have cracks, arcing marks or other damage that could cause a short circuit. A defective ignition coil cannot be repaired; it needs to be replaced. On most cars with a 4 cylinder or inline 6 engine, replacing an ignition coil is a simple and not very expensive task ($180-$380 for a coil). On some V6 engines, access to the rear ignition coils requires removing an intake manifold (e.g. Ford Edge, Ford Escape V6, Nissan Murano, Toyota Camry V6). This requires more work and costs more ($280-$500 for a rear spool). In such cases, your mechanic may recommend replacing all three rear ignition coils as a preventative measure. If one of the ignition coils fails, it is also recommended to replace all the spark plugs if they have not been replaced for a while. New spark plugs help ignition coils last longer.

The combustion process that takes place when you crank your car is crucial to getting the car moving. In order for this process to take place, various components must work together. One of the most important parts of the combustion process is the ignition coil. When the car’s key is turned, the ignition coil creates a spark intended to ignite the fuel-air mixture in your engine. This part is used every time you try to start your engine, which is why it is so important to keep it repair-free.

Your car’s ignition coil is supposed to last about 100,000 miles or more. There are a number of factors that can cause this part to become damaged prematurely. Most newer cars on the market have a hard plastic cover that is designed to protect the coil from damage. Because of all the copper wire that goes into an ignition coil, heat and moisture can easily damage it over time. Having a coil on your car that isn’t firing like it should can affect the overall functionality of your engine.

Leaving a damaged ignition coil on a car for an extended period of time will usually result in further damage to the wires and connectors. Usually the damage a coil takes is caused by things like leaking oil or other liquids shorting it out. Before replacing a coil damaged in this way, you need to find out where the leak is and what is the best way to fix it.

The following are some of the warning signs you will notice when it’s time to get a new ignition coil:

The car will not start

The engine stops regularly

The check engine light is on

If you take measures to replace the damaged ignition coil, you can reduce the damage to the other ignition components. Having this task done by professionals can save you a lot of time and frustration.

Common causes of ignition coil failure and common faults

Common faults in ignition coils Diagnosis of defective ignition coils

Ignition coils take power from the battery and pass it to the spark plugs, which ignite the fuel and get your vehicle running. There are some general signs to look out for when trying to diagnose a faulty ignition coil.

Bad fuel consumption

Decreased performance in vehicle economy and low MPG could be a sign of an ignition coil failure. Less power reaching the spark plug means vehicles struggle and use more fuel to make up for the insufficient power.

Vehicle misfire

A misfiring vehicle can be an early symptom of an ignition coil failure. This is caused by unused fuel emitted through the exhaust system. If the problem is not corrected, the exhaust can also be seriously damaged, resulting in avoidable and expensive repairs.

stalling of the vehicle

With an ignition coil failure, vehicles have erratic sparks that are emitted to the spark plugs to keep the vehicle running, resulting in stalling. If the vehicle is stopped, it can shut down completely and force a restart.

Problems starting the vehicle

Check your high voltage (HT) cables. They run between the distributor and the spark plugs. Ignition coil failures result in one or more spark plugs not receiving the correct amount of charge. If you are having trouble starting your vehicle in the cold, this is a good sign of a possible ignition coil failure. You can run a simple test on the HT wires to verify that there is indeed a spark going from each wire to each spark plug.

Common causes of ignition coil failure

Is it time to replace your ignition coils? You may be trying to decide between OEM or aftermarket coils. With this comparison guide, we’ll help you make an informed decision.

The myth of OEM prices

Before we compare OEM and aftermarket ignition coils, we want to address a common concern of many buyers: cost. It’s no secret that OEM coils often cost more than aftermarket coils. But is it always like this? no

Genuine OEM VW ignition coils don’t always come with exorbitant dealer prices. They are available online at much cheaper prices. In fact, we have an extensive catalog of genuine OEM ignition coils for all Volkswagen models at wholesale prices.

Should I Choose OEM Ignition Coils Over Aftermarket Coils?

The next question you might have is, “So I can get OEM ignition coils at aftermarket prices. Should I still choose them over aftermarket coils?”

The answer is a clear “yes”. OEM coils offer much more value than aftermarket coils.

Aftermarket ignition coils are cheap in every way

In general, aftermarket parts have one advantage over OEM parts: price. Aftermarket ignition coils can be used on a variety of makes and models. That means aftermarket manufacturers can sell them to a larger audience at a lower cost. Because of this, the aftermarket industry is booming. Car owners often turn to aftermarket parts because they either:

I can’t find affordable OEM parts

Are not aware that they can buy affordable OEM parts online

Just because something is popular doesn’t mean it’s always good. Aftermarket ignition coils are never worth the extra few dollars in savings. In some cases, you can get away with using a cheap universal aftermarket part as long as it doesn’t affect:

The power of the engine

The safety of the vehicle

For example, using an aftermarket steering wheel may be fine. But aftermarket ignition coils are likely to cause many engine performance problems.

Many VW owners are unhappy with aftermarket ignition coils

Amazon has a lot of bad reviews for aftermarket VW ignition coils. We’ve summarized a few:

“Three out of four of my new aftermarket ignition coils were bad. I had to pay a VW specialist to confirm that. Pure junk.”

“My aftermarket ignition coils were definitely not OE quality.”

“My aftermarket ignition coils only lasted 2 weeks. I had to limp my car home.”

“These aftermarket coils were causing rough running and misfiring during warm up. I switched back to OEM coils and the problem went away.”

The general consensus? Aftermarket ignition coils do not meet OEM standards. Some even fail very early.

Why is that? Two reasons:

1. Ignition coils should never be universal

Ignition coils should match the spark plug and ignition system in your VW. For an ignition coil to function properly, it must:

Deliver the correct voltage to the spark plugs

Charge fast enough to provide full voltage to the spark plugs

Let’s say your stock ignition coils generate 40,000 volts. If you install general purpose ignition coils that can only produce 20,000 volts, you’re going to have a problem. With OEM ignition coils you always have the certainty that the operating parameters are correct. The same cannot be said of aftermarket universal ignition coils.

2. Ignition coils should always be constructed from quality materials

Image credit: AutoRepairGuys

The ignition coil serves an important purpose. It converts the battery’s low-voltage electricity into high-voltage electricity. This allows the spark plug to which it is connected to create a spark. That’s a pretty big task.

For this reason it is very important that ignition coils are made of high quality materials. An ignition coil made of cheap materials will not withstand the demands of the ignition system and spark plug. So it’s rare for a cheap ignition coil to last long.

Volkswagen understands that. That’s why they build OEM VW coils with the finest materials. Volkswagen is so confident in their ignition coils that they offer a 12 month, 12,000 mile warranty on all OEM coils. Some aftermarket ignition coils fail much earlier than 12,000 miles.

Have you ever wondered why some aftermarket ignition coils are cheap – almost too cheap? Two reasons:

Many aftermarket manufacturers use inferior materials to build their ignition coils. It is rare for aftermarket manufacturers to offer a warranty on their ignition coils.

In summary, OEM ignition coils offer much more value than aftermarket ignition coils.

So you have determined that your engine has at least one faulty ignition coil. What now? You want to replace the defective ignition coil(s) as soon as possible. Before you can replace the ignition coil(s), you must order as many replacement coils as you need.

Which brings us to the question of whether you get OEM or aftermarket coils. Which type is the better investment? The answer is always, always OEM. Whether you have an Econoline or any other model with ignition coil problems, OEM coils are always a good investment.

Ford builds OEM ignition coils with high quality materials

The ignition coil plays a huge role in the operation of your engine. It converts the battery’s low voltage into high voltage electricity. The high voltage current helps the spark plug create a spark large enough to ignite the fuel mixture. For this reason it is very important to use ignition coils that are made of high quality materials.

An ignition coil may be a small and simple part, but it has a few important components, including:

Laminated iron core

Two coils of copper wire

These components constantly work together as long as the engine is running. They are responsible for generating enough voltage for the spark plugs to keep the engine running. The ability of your engine to run depends on the condition of the ignition coils. Quality therefore plays a major role in ignition coils.

Cheap ignition coils don’t last long. They cannot keep up with the strict requirements of the ignition system. When an ignition coil fails, engine performance suffers. Some aftermarket ignition coil manufacturers claim that their parts contain high quality materials. It can be true or it can’t be true. The only way to find out is to actually use the coils yourself. However, it’s a pretty big risk. If the aftermarket coils turn out not to be of high quality, your engine will suffer.

In this case, you want to be on the safe side. That means buying OEM every time. Ford understands the importance of ignition coils. Therefore, they attach great importance to making their ignition coils from high-quality materials. In fact, Ford is so confident in the quality of its ignition coils that it offers a full warranty on them. The guarantee is 24 months with no mileage limit. You would be hard pressed to find an aftermarket manufacturer that offers a good warranty, or any warranty at all.

Many aftermarket ignition coils are of a universal design

Material quality is not the only important factor to look for in an ignition coil. The design is also very important. For an ignition coil to work properly, it must match the spark plug and ignition system. More precisely it must:

Give the spark plugs the right voltage

Charge fast enough to maintain a steady flow of voltage to the spark plugs

Many aftermarket manufacturers use a universal design for their ignition coils. This means that these ignition coils are not made for your engine. For example, if your stock ignition coils produce 40,000 volts, you will need replacement coils that produce the same amount. If you buy aftermarket coils that only produce 20,000 volts they will not work in your motor.

It’s always better to be safe with OEM coils that are made specifically for your engine.

Ford builds OEM ignition coils to precise tolerances

Ford has many variations of OEM ignition coils. Each variant is designed for a specific engine (or set of engines). When you purchase OEM ignition coils for your engine, you have the peace of mind that these coils:

Takes a long time

Supply your spark plugs with the correct voltage

Get original OEM ignition coils from us at wholesale prices

Find your Ford in our catalog of OEM ignition coils. Here you will find the right coils for your motor. At Blue Springs Ford Parts, we offer wholesale pricing on OEM Ford parts, including ignition coils. You will hardly find better prices anywhere else!

International Shipping – Items may be subject to customs processing depending on the item’s customs value.

Sellers declare the item’s customs value and must comply with customs declaration laws.

As a buyer, you should note the following:

• Customs control delays.

• Import duties and taxes that buyers must pay.

• Brokerage fees payable at point of delivery.