Spark Plugs: RJ19LM=J19LM? (1 Viewer)

[Brian Collins]

My lawn mower recently quit working midway through cutting my grass and wouldn't start again. I looked up the troubleshooting guides on the internet and ended up determining it was a bad spark plug. The only problem is the plug that was installed, Champion RJ19LM, was not available at my local store so I ended up buying the Champion J19LM. The lawn mower works like a champ (at least for the 15-20 seconds I let it run after it started) with the J19LM installed.

My question is it safe to leave the J19LM installed or should I spend the money to have the RJ19LM shipped to me from an internet company? I would do this anyway, but shipping at the few sites I looked at doubled or tripled the cost of the spark plug (less than $2.00 locally for the J19LM).

If it matters the lawn mower is a Toro Recycler model 20041.

Thanks for any opinions/suggestions.

 

[LewB]

I believe that they are the same.
That is a common plug used by MANY engines.

 

[Dheiner]

From:
http://dodgeram.info/Engine-Gas/SparkPlugs/spkplghnbook.html#Today's

Today's spark plugs use resistors to eliminate radio frequency interference (RFI) which can affect on-board computer systems, AM and FM radio reception, TV broadcasts and even airplane communications, Each time the spark jumps across a gap, an electromagnetic field is created that can interfere with radio signals, By placing a resistor in the spark plug, we can substantially reduce RFI. Furthermore, the use of non-resistor plugs with today's complex computer systems can result in driveability problems, loss of performance and can even cause the computer to store trouble codes.

 

[Bob Graz]

Right, the RJ is a resistor plug. You're fine with the J19LM.

 

[Brian Collins]

Thank you all for the information. I figured it would be okay, but just wanted to make sure.

I'm just glad I tried it, normally I'm the type of person to just replace the whole thing if it quits working. Being prodded into trying to fix it by my family saved me a few hundred bucks (to help offset the cost of the jump into HD-DVD).