I brought my Lotus Esprit vehicle to the mechanic the other day due to an engine problem, and I was informed that the problem was caused by a rich mixture in the engine. I was informed the problem was with the air intake system, that the engine is not receiving enough air. What could be causing this?

One of the first things you need to look into in this case is your air filter? How old is the filter, and when was the last time it was replaced. The air filter traps contaminants to keep them from getting into the engine, and the filter often gets clogged after a long time because all the contaminants it has trapped are stuck in the filter material, preventing direct airflow into the engine. And if you have a stock paper filter in your vehicle, this is a poor filter material as it gets clogged easily. Replace it with one that is made from cotton or foam—these are better at trapping dirt and allowing airflow to the combustion chambers. The filter is recommended to be changed after every 30,000 to 45,000 miles.

I can smell something burning under the hood of my vehicle, but I can't see anything that suggests a problem. What are the possible causes of this smell? Is this something I need to be alarmed about?

The most common cause of a burning smell under the hood is an oil leak. If oil leaks from the hoses or tubes and get in contact with the hot metal component while the engine is running, you will smell something burning in the engine bay. Check the hoses for the source of the leak; just be sure you do the check while the engine is cold to prevent any injury. Another possible reason is a damaged electrical wiring. You can do an inspection to see if there are wiring and connections that are starting to go bad. You can also have the clutch checked for possible slipping. If the surfaces that are supposed to come in contact with each other are not mating correctly, this burning smell will also be produced.

I am about to replace the wheel bearings in my Lotus Esprit vehicle because of damage, and I'd like to ensure that the new bearings will last longer than the ones they replaced. What are some things that I can do to ensure that my new bearings will not die on me anytime soon?

The first thing you can do is ensure that you get new and high-quality seals together with the bearings. The seals will be the bearings' primary means of protection against dirt and contaminant. No matter how good the new bearings you get, poor sealing will likely result to premature bearing damage. Another thing you need to remember concerns the use of proper grease. When mounting the bearings, you must use the kind of grease specified by the manufacturer. The grease should be able to withstand high temperature so that it can protect the bearings even in harsh working conditions.

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