Wheelhorse84 87 #1 Posted February 27, 2013 So my onan calls for a champion RS14yc plug but had a rs17yx in it. It is hard to see but the bottom electrode of the old plug is is white and really thin like it wore away. What would cause this? Share this post Link to post Share on other sites
Don1977 604 #2 Posted February 27, 2013 Can't see your pictures, but here this may help: http://www.google.com/imgres?imgurl=http://www.aa1car.com/library/reading_spark_plugs.jpg&imgrefurl=http://www.aa1car.com/library/cm1196.htm&h=972&w=728&sz=89&tbnid=ZiZr6VoeCxZdxM:&tbnh=108&tbnw=81&zoom=1&usg=__njKFzrsbQPiP-w1_ezjz_6vD35c=&docid=VlLt88Txf-gBuM&hl=en&sa=X&ei=rnwuUYqHHJLA9gTJ14GIDA&ved=0CDsQ9QEwBA&dur=802 Share this post Link to post Share on other sites
Wheelhorse84 87 #3 Posted February 27, 2013 The center electrode is the thickness of a piece of mechanical pencil lead. And white. Hmmmm maybe it was too hot of a plug. Share this post Link to post Share on other sites
ericj 1,578 #4 Posted February 28, 2013 the rs17yx is the new plug recommended by onan to replace the rs14yc. the electrode on the new plugs are very thin and it is a thin line on the whiteness of the plug between running good and running lean. if it is running lean it will be apparent in the cold weather. it will stumble alot when 1st put under a load if you know what i mean. it will also possibly need choked hard when starting cold or not be able to take choke all the way off in the real cold. i have a 416-8 that i have to run a little choke to get to run in the real cold but runs okay in the warmer weather eric j Share this post Link to post Share on other sites
Wheelhorse84 87 #5 Posted February 28, 2013 I went to my local WH dealer asked for plugs and he gave me the 14's I wonder why he didn't give me the new number Share this post Link to post Share on other sites
HokieAg07 129 #6 Posted March 1, 2013 Doing a tune up this weekend, is the gap spec on the RS17YX the same as what the RS14YC called for? Share this post Link to post Share on other sites
Wheelhorse84 87 #7 Posted March 1, 2013 I had my WH dealer gap the 14's. don't know what the 17's gap is. Share this post Link to post Share on other sites
