When your smooth-running car or truck suddenly sounds like an angry tractor, chances are good that something within the exhaust system is to blame. The problem could be a broken exhaust manifold, or it could be farther downstream in the exhaust system’s pipes and its connection to the muffler.

Honda CR-V Lifter Tick Causes The most common reason that a lifter will tick is because the lifter itself has gone bad. Replacing a lifter is a pretty challenging job. It involves taking a decent portion of the engine apart, which is above the skill level of most folks who aren’t qualified mechanics.

Broken Tail Pipe: The tail pipe comes out of the muffler and exhausts the gases and fumes into the air. Leak in Exhaust Manifold: The exhaust manifold collects exhaust gases from the engine. If there is a leak in the exhaust manifold it can cause the engine to run louder, sputter and run unevenly.

When a car engine develops an unusual noise, it may be caused by a simple misfire or expensive wear and tear of the fast moving metallic components. In your case, your petrol engine has a rattling sound typical of a diesel engine. This is often a result of use of wrong or counterfeit motor oil.

An engine that is suddenly running louder than normal is usually crying for help. In the majority of cases an underlying problem is causing the engine to rumble. Problems can range from something simple like dirty spark plugs to the more serious failing muffler or catalytic converter.

The valves of an engine open and close to simplifying the passage of air and fuel in your car’s exhaust. Apart from the pipes, other parts of the engine also make your car cause loud noise. They are pistons and bearings. Any damage or wear and tear to these parts could make your car sound like a motorbike.

The noise could be due to an exhaust leak although it is also possible that a failed wheel bearing could cause enough “rumbling” to sound really loud. If you request a vehicle noise diagnostic the origin of the noise will be pinpointed and the certified mechanic will let you know of the required repair and the cost.

This sound is most noticeable when your engine is idling. It sounds similar to the valvetrain noise, however, it is more metallic and is most definitely a double knock. This noise can be caused by a worn or loose piston pin (a steel pin which connects the piston to the connecting rod) or a lack of oil).

How to Repair a Loud Muffler

1. Chock the front wheels of the vehicle to prevent movement.
2. Slide under the vehicle.
3. Wear safety goggles to protect your eyes from falling particles.
4. Wrap muffler patch tape around the muffler directly over the hole or damaged area.
5. Cut the top and bottom from the can with a can opener.

Based on U.S. pricing trends before discounts, it can cost from $30-$50 to at least $500 to repair or replace an exhaust system. The most common muffler repairs are patching holes, tightening a loose connection, and re-welding a dangling muffler back in place.

Buy a Silencer A silencer works by narrowing the hole that the exhaust noise has to travel through and, in so doing, reduces noise. Installing a ready-made silencer doesn’t require professional help. All you have to do is to slip the muffler inside the exhaust pipe, and you are good to go.

Yep, exhaust is definitely quieter when the engine isn’t warm yet. Especially in the winter. But it’s not noticeable at idle, as the engine usually puts out more noise / exhaust volume at cold idle than hot idle, so cold idle is usually louder (even if it’s quieter off-idle).