Mitsubishi Air Filter Troubleshooting

Is your vehicle losing power? Are you having starting problems? These could all be issues that require major repairs. But they can also at times be fixed by checking and replacing an air filter. If you have questions about the Mitsubishi air filter problems, the answers of verified mechanical Experts can provide you with the information you are looking for. Read below where Experts have answered these questions and more.

Could a bad air filter cause a Mitsubishi Pajero to emit clouds of black smoke from the exhaust when starting?

Case Details: Accelerator response has also become slow and the engine has to be taken to high revs before attempting a slope.

The black smoke is a sign that there is either too much fuel or too little air in the combustion mix. This will also account for the slow accelerator response as the incorrect mixture of fuel and air will not allow ignition to happen correctly. The first place to look for the cause is the air filter. Check it for dirt, debris and blockages. These can reduce the amount of air available for combustion. If the air filter is okay the intercooler is the next thing to check and if the vehicle is a diesel, there could be a problem with the diesel pump injection timing.

Can a bad air filter cause intermittent hard starting and stuttering of a Mitsubishi Pajero 2.8 Turbo engine?

Case Details: A mechanic says the cause is either poor compression or a cracked head.

While a cracked head or poor compression could account for this problem, there are other issues that should be investigated before such major repairs are undertaken. Have the following checked before starting any repairs:

• A clogged air filter can create these symptoms and a simple cleaning/replacement could fix the problem.
• Incorrect ignition timing.
• Burnt glow plugs.
• Leaky valves.
• Sticking or clogged injectors.
• Vacuum line problems.
• Low coolant temperature.
• Poor fuel quality.

What are the negatives of using an open pod air filter in a Mitsubishi Lancer EX 2.0 GLS to improve performance?

For normal daily use, a drop in filter is generally preferred. Open element filters:

• Require more frequent cleaning because of the minimal dust management as compared to when there is an air filter housing
• Can cause drivability issues. For example, the radiator fans coming on can cause turbulence around the air filter which will affect the functioning of the Mass Airflow Sensor. The factory housing prevents this.
• Offer no water management because of the open filter element. The factory air boxes are designed to prevent the ingress of water. If water should enter, there is a water trap built in so water entering the engine causing major damage, is extremely difficult.

Could a wet air filter from a deep puddle cause a 2001 Mitsubishi Galant ES to develop starting problems and running rough?

The problems are likely to have developed because of water coming into contact with the engine. In the best case scenario the air filter may be damp or there could be water at the bottom of the air box. These will cause the hard start and rough running. If this is the case drying out the air filter and air box should fix the problem. If this is not the case, then water may have entered the engine which will require a full diagnostics check to be done in a workshop.

Can an aftermarket performance air filter be fitted on a 1991 Mitsubishi 3000GT VR-4?

The only difference in the air filter area of the two models is with the MAF. Since this is an electronic difference and not a physical one, it will have no effect on the fitment of the air filter. If the filter was working on the 1991 model it can be fitted to the 1997 vehicle.

How difficult is it to change the cabin air filter on a 2007 Mitsubishi Outlander?

The cabin air filter is located behind the glove box.  Once the glove box in removed, the 2 lug nuts that hold the filter in place are accessible. Remove them and the filter can come out.

Replacing or cleaning an air filter can, at times, fix a problem that would appear to require major repairs. If you are wondering if your air filter is faulty or blocked and want to know what you can do to fix the problem, the insights of verified Experts can provide you with the guidance you need.