Q: Incorrect spark plug replacement caused worse gas mileage

asked by on

I am searching for an original spark plug replacement number. I was told the wrong one and after installing it my fuel mileage has gotten worse. I have misplaced my manual. It is not a supercharged model. They are iridium plugs and are more expensive, but they are worth the cost when it comes to fuel savings. Where can I look or go in order to find the proper replacement number?

Hello there, thank you for asking about your 1997 Oldsmobile LSS. AC Delco 41101 comes standard on these vehicles and must be used in order to maintain the ignition system properly. Also, find a maintenance schedule for the vehicle and make sure you have kept all maintenance up to date including air filters, spark plug wires, and the fuel filter. Hire a YourMechanic professional to inspect your decreasing gas mileage and replace the spark plugs or air filters if necessary.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Incorrect spark plug replacement caused worse gas mileage

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Transmission slips off line under mid-full throttle

Hello there, thank you for asking about your 1998 Oldsmobile LSS. The first thing to have checked in a situation like this is the transmission fluid level. Using the directions laid out in the owner's manual, inspect the transmission fluid...

Q: The AC/heat blower fan - 1997 Dodge Avenger

Hey there. The most common failure where the fan only blows on high is the blower motor resistor. It is possible the blower motor switch is the culprit, and it can be replaced separate of the control module. Diagnosing...

Q: Q: Car won't start, fuel gauge and speedometer malfunctioning

Hello there, the first place I would look, with all of the symptoms you've described, is into the no start condition. The most likely cause of a no start would be a problem with the battery, starter, ignition switch, fuel...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...