Geez, which spark plug is it

I went and bought a set today just to carry. The dealer said they use NGK DPR7EA-9, I come home and the owners manual says 6EA-9. What will happen if I put the 7s in.

6 reads and no writes, just want to make sure I dont screw something up.

[donguer]

Not to leave you alone out here. I don't know the answer but, I'm also interested in knowing.

[rlfaubion]

I think the 7 is just a hotter plug, which may lead to some pinging. I doubt you can hurt anything. You might check with CaddmannQ or Blown Dodge. They're the educated ones

[Yellow Jacket]

According to the NGK website the NGK DPR6EA-9 is the correct plug for the 1600 Nomad.

I don't know if the 7EA-9 will work or not. I think I would ask the dealer to exchange them for the 6EA-9.

[ringadingh]

My 1500 calls for the DPR7EA-9, however I replaced them last fall with DPR7EIX-9 which are the Iridium plugs. This is one heat range colder than stock, and the bike works great. I wanted the Iridium plugs since they are supposed to give a stronger spark with less coil voltage required.

[Scoot]

This might help you The 7 is a dab colder

http://www.gadgetjq.com/spark_plug_numbers.htm

Originally Posted by trjam

I went and bought a set today just to carry. The dealer said they use NGK DPR7EA-9, I come home and the owners manual says 6EA-9. What will happen if I put the 7s in.

The 7's, being colder, will tend to foul more easily. I'm not saying they will foul on your particular bike, under the particular circumstances which you ride; just that (all things being equal) the 7's will foul first.

That being said, all modern plugs are pretty resistant to fouling, so I wouldn't worry if you should want to use them as spares. If you live in a very hot climate, you might want to run them all the time.