Check Your Spark Plugs!!
#61
@steve37 That's an interesting bulletin, Steve. I once went to a fastener manufacturer in SoCal — can't remember the name, but the initials were something like APD and it was somewhere like Oxnard — to upgrade some footpeg bolts on my Yamaha R1. The guy behind the counter said to always use a lubricant of some kind on bolts, but he noted that a lubricated bolt will tighten with less torque. With regard to spark plugs, the NGK bulletin sounds good, but I will add this: When I changed out my OEM spark plugs on my '13 Fit, one was in so tight that I had to use a pry bar. I got lucky, and it came out, but things could have gotten ugly.
Obviously, with spark plugs, you want them tight enough to stay put but not seize or break. I tend to cover-torque things in general, but I have never broken a spark plug. I don't know what causes seizing or if using anti-seize automatically means that the plugs are less likely to stay put.
Obviously, with spark plugs, you want them tight enough to stay put but not seize or break. I tend to cover-torque things in general, but I have never broken a spark plug. I don't know what causes seizing or if using anti-seize automatically means that the plugs are less likely to stay put.
#63
Okay, but why now and why this engine? We've been using anti-seize on spark plugs for years.
#64
I can understand (from the bulletin) how this could easily happen.
#65
90k Ish is the miles my buddies, bought new, Fit made it to on the original plus before it ejected #3.
Last edited by GAFIT; 01-17-2022 at 04:00 PM.
#66
Update
Spark plug blow out is a known issue for 2009 - 2013 Honda Hit. See 2017 Manufacturer Communication posted to NHTSA website (https://static.nhtsa.gov/odi/tsbs/20...06924-9340.pdf).
Last edited by HFIT2012; 01-25-2022 at 08:59 PM. Reason: 2017 MC state it's for 2009 - 2013 Honda Fits.
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