Read Southwest Engines Reviews to know the Truth of Used Engines Quality Say you are on the road and your car starts changing its tune, at this time it is important to give a listen to what your engine wants to say. No other person can understand your engine more than you. If it starts producing odd sound or somewhat different, there could be a problem. If these types of problems will be detected early, it will save you a lot of time and money. If you hear a regular sound under the hood made by your vehicle’s engine, then you start looking at a number of possibilities behind this. Always do a proper investigation before concluding anything and taking any action. A quick decision may cost more than it must be in reality. Let’s know about some symptoms and its possible causes of engine’s sound: The Symptom: Loud exhaust noise which may either come from the vehicle’s front or rear. Possible causes: 1. Broken or cracked exhaust manifold. Solution: Replace the exhaust manifold. 1. Worn out of muffler or exhaust pipe. Solution: Replace exhaust pipes or muffler as per requirement.