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- Spark plugs and ignition coils are without question two of the most common causes of WRX misfires. Leaking or faulty injectors may also cause misfires. Finally, newer direct injection (DI) Subaru engines can have misfires due to excess carbon build-up. Carbon build-up usually isn’t a problem on the WRX until close to 100,000 miles.
tuningpro.co/subaru-wrx-reliability-common-problems/Subaru WRX Reliability & Common Problems - Are They Reliable?
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- Head Gaskets Might Fail and Cause Engine Problems
- Rough Running Due to Faulty Oxygen Sensors
- Bad Camshaft Seal Threatens Engine Integrity
- Cooling System Problems Make Owners Steamed
- Leaking Oil Pump Seals Might Mangle The Motor
- Torque Converter Causes Wheel Hop
- Defective Turbocharger Might Reduce Power
- General Pros and Cons For The Subaru WRX
- What’s The Resale Value on The Subaru Wrx?
The WRX has an aluminum head that helps to cut down on engine weight. Unfortunately, aluminum heads are prone to damage when the engine compartment gets hot. If you live in the Desert Southwest or another local area where the summers are hot, the WRX might run much hotter and cause the head to deform. A subtle warping of the head would make it poss...
Oxygen sensors perform the very important task of measuring the amount of oxygen that goes into the combustion chamber and helps to optimize the power, performance, and fuel economy of your WRX. When an oxygen sensor goes bad, your WRX will not run as well as it should. You initially might notice a drop in fuel economy and a rise in operating costs...
The camshaft performs a very important of opening and closing valves in time with the engine. When a camshaft fails the engine will run poorly and might fail completely. That does not mean that the engine is dead, but a costly camshaft replacement becomes necessary. A camshaft needs oil to reduce friction and heat. Without oil, camshafts will overh...
The cooling system on your WRX is critically important for ensuring a smooth-running and long-lasting engine. The coolant helps to maintain a safe operating temperature and provides the cabin with heat on cold days. When a problem with the cooling system occurs, the entire motor is in peril, and that really steams a lot of WRX owners. If your WRX i...
If you notice your WRX is consuming a lot of oil, another leaking seal might cause the problem. This time, the oil pump seal might be the cause of oil loss and could create a small amount of oil accumulation beneath your engine. The oil pump circulates the oil within the motor. When the oil pump’a seal leaks, the motor could suffer along with your ...
The torque converter helps to even out the RPMs on the respective axles while you are driving. That is important because either a front-wheel-drive or an all-wheel-drive WRX has wheels that turn at different RPMs while cornering or making turns on city roads. The outside wheels always cover more ground than the inside wheels when you are turning or...
You cannot get the best performance from your WRX if its turbocharger is not working. A defective turbocharger on a race-inspired car definitely is a big problem and has affected some WRX owners. Several WRX owners have reported the turbocharger lacks oil and causes the engine to misfire. Sometimes, the turbocharger stops working altogether. A non-...
The Subaru WRX is noted for being an exceptionally competent rally racer. All-wheel drive and a reliable horizontally opposed engine with a turbocharger give it good power and fuel economy. Most people who buy and regularly drive a WRX enjoy its exceptional power-to-weight ratio. Unfortunately, its generally experimental design has led to the use o...
The WRX has a kind of cult following that makes used models valued among those who intend to work on them and enhance the performance potential of their respective models. The WRX also has less demand than the Outback and other Subaru models that are more suitable for daily driving and long-term ownership. The WRX generally is considered to have po...
Oct 31, 2014 · My engine failed and required a tow to the dealership. They said my #3 cylinder did not receive enough oil and caused a significant amount of damage. I'm far from a mechanic and am looking for advice.
Feb 26, 2022 · One major issue drivers have cited with the Subaru WRX is internal engine failure. An engine’s many moving parts can become costly to replace or repair. The WRX doesn’t have the best reputation in this area, according to owners. The model’s known weak points include pistons, rods, piston rings, and rod bearings.
May 21, 2021 · The EJ25 is the most problematic WRX engine of them all. Unfortunately, they are so unreliable and prone to premature failure that WRX and WRX STI owners brought a class-action lawsuit against Subaru. The lawsuit alleges that the EJ25 has faulty rod and crankshaft bearings prone to failure long before the reasonably expected lifespan of an engine.
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2015 WRX engine failure at 107K miles, what to do. Troubleshooting. Took great care of my car but for some reason the engine decided to completely fail. Not too sure exactly what went wrong yet as I haven't had a chance to talk to the mechanic directly. (Wife talked with the customer service guy).
Follow these recommendations to avoid piston ringland failure in your turbo EJ20, EJ25, or FA20 powered Subaru.
