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Thread: Spark plug change

  1. #1
    Join Date
    2nd October 2005 - 15:23
    Bike
    1991 FZR 250
    Location
    Palmy
    Posts
    123

    Spark plug change

    Well.....
    My bike was struggling to stay at 110km in 6 gear and I though, hey it must just be gutlless, in 5th and 4th I had plenty of power and it was really easy to pass but once I got into 6th she would just fade back to about 100 and wouldn't budge also its wouldn't idle. So I pulled the the spark plugs today and one was sopping wet, so I thought hey that is odd, and another odd thing was that 2 plugs were dp8ea-9's and the other 2 were dpr8ea-9's I don't know if that makes a difference but I put all dpr's in it So I started it up and it sounded heaps different and it sat there happily idling at about 2500 rpm. I was like hey something has deffinatly changed so I jumped on and took it for a bit of a blat. 1 word.....
    INCREDIBLE, I couldn't believe it, it was like a totally different bike was sitting at 100 in 6th pulled back on the throttle and was doing 170 in no time at all (on a private road of course). My bike is warming up heaps quiker now, it was smoking like a mother for the first couple of km's turns out it was just oil on the exhaust manifold.
    It was costing me about $19 to do a 160km trip so it will be good to see what kind of milage I get with all four cylinders working now.

  2. #2
    Join Date
    8th November 2004 - 11:00
    Bike
    GSXR 750 the wanton hussy
    Location
    Not in Napier now
    Posts
    12,765
    They do go much better when running on all the cylinders they have fitted, eh??!
    I had a problem with a dicky plugcap on the gixxer, it would cut in and out of 3/4 cylinders. Disconcerting when giving it a handful in a corner. Also tried to impress a pillion with it's 2-up speed....damn, could only get 190 out of it.
    Do you realise how many holes there could be if people would just take the time to take the dirt out of them?

  3. #3
    Join Date
    13th January 2004 - 11:00
    Bike
    Honda PC800
    Location
    Henderson -auckland
    Posts
    14,163
    Um matey I got bad news for ya.The R in the plug number is for resistor -it aint gonna affect the way the bike runs.
    sounds like the plugs fouled up smetime and never got cleared
    To see a life newly created.To watch it grow and prosper. Isn't that the greatest gift a human being can be given?

  4. #4
    Join Date
    18th October 2005 - 20:19
    Bike
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    2,025
    Jamiepo, on Sunday you mentioned toy mentioned you still had a intermitent problem on the way there with the rear left cylinder, how was it on the way back? I think you are going to to have to a little more fiddling.

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