Q: Coil pack keeps cracking.

asked by on

I have a 2000 Mustang GT. As I was driving down the road I smell something burning. By the time I pulled over and got my hood open, my number one coil pack was on fire. Luckily, I was able to get it out fairly quickly. Once I got my car home that night I pulled out the coil pack and there was a big crack on the bottom of it. A few days later I picked up all brand-new spark plugs and a set of eight MSD coil pack blasters and got them all installed. Right as I turn my key and started my car, the same exact coil pack, even though it was brand-new, started crackling and smoking, so I turned off the ignition quick. I pulled it out right after and the spark plug was perfect but the bottom of the brand-new MSD coil was cracked within a matter of 15 seconds.

The ignition coils are only meant to withstand a high electrical charge whereas the spark plugs can withstand that as well as the explosions within the combustion chamber. It is possible that you could have a small crack in your intake manifold or cylinder head allowing combustion chamber temperatures to be exposed to the ignition coil, causing the burning. I would recommend having a professional run a compression test on the cylinder in which this is happening as it is likely the cylinder will not have as much compression with a crack in it.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Coil pack keeps cracking.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: rough idle

The fuel injectors on this engine can commonly get carbon buildup on the tips. This will cause the engine to run rough and have hard starts. You should try running top tier fuels in our car that have cleaning abilities...

Q: Must you replace all ignition coils or faulty ones only for 2010 BMW 550i GT?.

Ignition coils can be individually replaced without concern as to engine operation however fuel injectors are a different matter. If you replace one fuel injector, the other 7 fuel injectors should be removed from the fuel rail and professionally cleaned....

Q: brakes/accelerator/steering wheel all locked up while driving

Hi there, thanks for writing in. This sounds like a tricky problem, there could be any number of causes. It could be the engine/powertrain control module was shaken over the bump and was damaged, causing it to stall the car,...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...