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Display Mesage #115662


How about a spark plug thread
Written by humpthegrump on 8/10/2012 at 09:49 pm

I got my replacement '94 pc with about 4,000 miles on it.

First tune-up and new (iridium) spark plugs was at about 30,000 miles.

Second tune up and new spark plugs was by Leland's excellent mechanic at
over 65,000 miles.

I noticed no difference between the plugs in power, mileage or ease of
starting or pinging (I always used the cheapest low grade gasoline.)

Any quality plug seemed to last many times the 8,000 miles the factory
recommended length for replacement.


Your mileage may vary, but I was consistently averaging 47.7 mpg and I was
not a slow poke.


Tom



"Tuppie" Tom, a.k.a. Hump-the-Grump

"Lemmings Non Sumas!"

'94 black PC "Tuppie II", 75k rider

Lelands Rides, MSTA, AMA, No. Cal. PC'ers, ipcrc, all eleven Y2K rides

President - Brentwood Foothills Pacific Coast Owners & Riders Club - BFPCORC

In the western foothills of the Great California Central Valley

In the end it will be alright. If it is not alright, then it is not yet the
end!



"I am among the very small minority of human beings who honestly don't care
what anybody else thinks. If I did, I'd probably own a bike just like
yours...Peter Egan"

Message Thread for message #115662

wbpc800
8/10/2012, 05:40 pm
How about a spark plug thread
What do you use for spark plugs and how often to you replace them? I went with the stock ngk's when I got my PC. I've now put 30 or 40k on her and figure it is time to replace the plugs. (Have ran platinum in my cars so long I don't actua

    goldwingman40
    8/10/2012, 08:30 pm
    How about a spark plug thread
    Wade, I have been running NGK Platinum Fine Wire plugs in all my bikes for the last 15 years, the plug for the PC was DPR7EVX-9. Plugs that can go 100k miles in cars and trucks can sure go in bikes. This sure saves a lot of work of changi

      alfr4d
      8/10/2012, 09:19 pm
      How about a spark plug thread
      Wade, That is long for plugs, even with having two in each cylinder. The manual recommends change on every 8.000 miles. Go for the longest lasting plugs = 80.000 miles for Iridium. The gap does not only stay the same but does not have to be c

        humpthegrump
        8/10/2012, 09:49 pm
        How about a spark plug thread
        I got my replacement '94 pc with about 4,000 miles on it. First tune-up and new (iridium) spark plugs was at about 30,000 miles. Second tune up and new spark plugs was by Leland's excellent mechanic at over 65,000 miles. I noti

        alfr4d
        8/11/2012, 12:41 am
        How about a spark plug thread
        I should comment myself, Iridium spark plugs may not be not the longest lasting. E3 guarantees their product for 100.000 miles or five year! http://www.e3sparkplugs.com/faq.php - first questi

    gibinmich
    8/10/2012, 10:29 pm
    How about a spark plug thread
    My stock NGKs have about twenty thousand miles. Runs fine. --- In ipcrc@yahoogroups.com, "Wade" <wbpc800@

    rnbrn21
    8/11/2012, 06:04 pm
    How about a spark plug thread
    Thanks a lot everyone. This spark plug thread made me look in my records and I discovered that I haven't replaced my plugs in 36K miles. Now I've got more work to do. Ron Brown '89 Peace and Cuiet

    daddy_fry
    8/11/2012, 06:48 pm
    How about a spark plug thread
    I installed iridium plugs about 30,000 miles back. No problems since installation. At time of installation I "thought" the idle increased by about 200 rpm after the install, and idle was smoother.