what Kohm resistances should i have for ht lead Merc 320ML

Asked by Jan 12, 2013 at 06:48 AM about the Mercedes-Benz M-Class

Question type: Maintenance & Repair

4 Answers

OK what is ht lead? Kohm equals 1000 ohms of resistance in the part or wire, so whatever the resistance is is large, but for what lead?

spark plug lead, multimeter reading to test for damaged spark plug lead, resistance should read? what?

Heli-Core Wires (Blue): 150 - 1,200 ohms per foot 8.5mm Super Conductor (Red): 40 - 50 ohms per foot If you do not know the specification for your wires, measure the resistance of each wire. Remember to divide the length of the wire by 12 to get a "per foot" measurement. If one wire is out of that average spec, it is at fault Solid Core Wires: You cannot run Solid Core Spark Plug Wires with an MSD Ignition Control. Solid Core wires do not suppress any Electro Magnetic Interference (EMI) which will interfere with electronics or rev limiters on your vehicle. A suppression style or spiral wound spark plug wire MUST be used.

1,685

On your vehicle there are two spark plugs per cylinder. One coil pack per cylinder with two coils in each pack. Wires are six or eight inches long with a suppressor which connects to the spark plugs. On the suppressor you will see stamped a spec for the resistance through the wire plus suppressor. Usually they are 1 K ohms. If one of the wires is unusually high (1.5 K ohms or greater) I would replace it. Try to determine which cylinder is misfiring before testing every wire.

Your Answer

M-Class

Looking for a Used M-Class in your area?

CarGurus has 5,966 nationwide M-Class listings starting at $800.

ZIP:

Mercedes-Benz M-Class Experts

  • #1
    jihadghazali
    Reputation
    1,230
  • #2
    wellness
    Reputation
    1,010
  • #3
    snowseal19
    Reputation
    780
View All

Related Models For Sale

Used Mercedes-Benz GL-Class
128 Great Deals out of 3,361 listings starting at $6,900
Used BMW X5
329 Great Deals out of 18,187 listings starting at $2,500
Used Mercedes-Benz E-Class
447 Great Deals out of 20,083 listings starting at $1,500
Used Mercedes-Benz GLK-Class
141 Great Deals out of 3,200 listings starting at $8,500
Used Mercedes-Benz GLE-Class
51 Great Deals out of 9,173 listings starting at $33,990
Used Mercedes-Benz C-Class
641 Great Deals out of 26,064 listings starting at $1,488
Used Mercedes-Benz S-Class
114 Great Deals out of 7,182 listings starting at $2,000
Used Lexus RX 350
371 Great Deals out of 15,762 listings starting at $5,500
Used Mercedes-Benz G-Class
10 Great Deals out of 1,527 listings starting at $26,995
Used Land Rover Range Rover Sport
133 Great Deals out of 7,160 listings starting at $4,500
Used Porsche Cayenne
99 Great Deals out of 5,250 listings starting at $3,995
Used Mercedes-Benz GLC-Class
28 Great Deals out of 9,887 listings starting at $26,998
Used Land Rover Range Rover
80 Great Deals out of 5,044 listings starting at $2,850
Used Audi Q7
119 Great Deals out of 6,507 listings starting at $4,990
Used Audi Q5
169 Great Deals out of 10,810 listings starting at $5,398

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.