Nov 19, 2011 · Failure Date: 01/19/2012. The 2. 3 liter 4 cylinder l3t engine that is in my wife's 2007 Mazda Cx-7 has a bad variable valve timing actuator which was verified today by dual Mazda of jacksonville florida. A warranty extension was issued by Mazda around the 14th of January 2012 following the initial TSB (technical service bulletin) date 23 Oct 19, 2012 · Our clients have experienced a number of Mazda engine problems, including illuminated engine warning lights, oil burning, excessive smoke from the tailpipe and/or a foul odor (especially during a cold start). Many are having repeat failures with their Mazda turbocharger being replaced numerous times. Sep 10, 2022 · 3. Bad Fuel Economy. Another symptom of wastegate stuck on closed is a poor fuel economy. Your engine will consume more without actually being burned. The fuel will be expelled through the exhaust system. The turbo system is a great way to improve the fuel consumption of your vehicle. Once you notice that your vehicle consumes more fuel than Worst 2008 Mazda CX-7 Problems #1: Engine Failure 2008 CX-7 Average Cost to Fix: $5,000 Average Mileage: 107,000 mi. Learn More #2: Turbocharger Failed 2008 CX-7 Average Cost to Fix: $4,500 The turbo appears not to be the only major weakness of the petrol 2.3L CX7. Another is a problem with the timing chain and over-revving of the VVTi engine, as well as excessive heat build up. Additionally, owners complain of poor mileage from the vehicle even on open road / highway driving from the turbo 2.3L engine. Aug 29, 2022 · A faulty fuel pump can affect the turbocharger of the Mazda CX-5 in several ways. First, it can cause the engine to run lean, which can damage the turbocharger. Second, it can cause the engine to misfire, which can also put more stress on the turbocharger. Finally, it can cause the engine to overheat, which can lead to engine failure and damage ouOSKN.

mazda cx 7 turbo failure symptoms