Life expectancy of Fuel Injectors

9,305

Asked by May 04, 2013 at 04:36 PM about the Mercedes-Benz SL-Class

Question type: Maintenance & Repair

This question is specific to a 2007 SL550, but would probably apply to most any modern car. Assume the car is driven 10k per year in a state that mandates up to 10% Ethanol. Usually name brand of gas is used - but not always. Baring any unforeseen problems, is there a reasonable life expectancy of Fuel Injectors? 50K, 100k, 150k, ?  Is it easy for a mechanic to check the Resistance reading on these.?  Thanks

3 Answers

261,265

As long as you keep them clean they should last a long time. I currently have 230K on a set.

2 of 2 people found this helpful.
102,175

It is relatively easy to check the resistance but what will that show you? A good injector should read around 12 ohms. A open coil with read a huge number and it will increase as the insulation builds capacitance from the meter power source.

1 of 1 people found this helpful.
9,305

You are right - a good injector shows 12 ohms. The purpose of testing is to check for a failing (yet still functional) injector. The readings in those cases would often be in the 8 to 9 range.

1 of 1 people found this helpful.

Your Answer

SL-Class

Looking for a Used SL-Class in your area?

CarGurus has 3,435 nationwide SL-Class listings starting at $7,000.

ZIP:

Mercedes-Benz SL-Class Experts

  • #1
    bobkat
    Reputation
    1,330
  • #2
    twhobie
    Reputation
    460
  • #3
    Michael Kane
    Reputation
    440
View All

Related Models For Sale

Used Mercedes-Benz S-Class
159 Great Deals out of 7,653 listings starting at $2,000
Used Porsche 911
146 Great Deals out of 5,043 listings starting at $11,990
Used Chevrolet Corvette
186 Great Deals out of 18,698 listings starting at $3,941
Used Mercedes-Benz E-Class
686 Great Deals out of 22,091 listings starting at $1,500
Used Mercedes-Benz SLK-Class
65 Great Deals out of 1,281 listings starting at $1,991
Used Mercedes-Benz C-Class
767 Great Deals out of 29,321 listings starting at $1,500
Used BMW 6 Series
83 Great Deals out of 2,501 listings starting at $5,950
Used Mercedes-Benz CL-Class
18 Great Deals out of 515 listings starting at $4,580
Used Mercedes-Benz CLS-Class
87 Great Deals out of 2,477 listings starting at $3,950
Used Mercedes-Benz CLK-Class
33 Great Deals out of 1,168 listings starting at $1,500
Used Porsche Boxster
58 Great Deals out of 1,250 listings starting at $5,786
Used Maserati GranTurismo
17 Great Deals out of 819 listings starting at $31,750
Used BMW 7 Series
101 Great Deals out of 5,274 listings starting at $2,999
Used Bentley Continental GT
10 Great Deals out of 487 listings starting at $35,009
Used Jaguar XK-Series
34 Great Deals out of 632 listings starting at $5,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.