Cleaning Fuel Injectors

courtesy of Bob, The Auto Answer Man

Dear Bob,
I recently took my car into Jiffy Lube for an oil change. While it was there, they asked me if I would like them to clean the fuel injectors, and since it had never been done before, I said OK.

When they were done, there was the worst smell in the shop than you could ever imagine. My question is, did this cleaning actually accomplish anything (aside from liberating $50 more from my wallet)? Should it be done periodically or is it just a gimmick?

Most of today's cars are engineered to run at low revs. This generally does not clean the combustion system out sufficiently. There are some products on the market that really do a decent job. I would imagine that if they did not have the exhaust pipe hooked up to a collection device you would have noticed a lot of black soot coming out. Assuming that the product actually was working, and they didn't do something else to make the car run in an excessively rich mode, all of that carbon was once inside your engine's combustion chamber (probably not in the fuel injectors).
Good Luck!
Drive Safely!
Bob, The Auto Answer Man

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