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SpidyJ
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« on: March 02, 2020, 03:35:12 PM » |
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Left side/center.
That's the only pipe that didn't burn me.
Gave her a Seafoam dose.....no help.
Pulled the plug and it was carbon fouled.
Cleaned it and checked to see if it was shorted...seems OK.
Plugged it into the wire and started her up...spark was there but looked kinda wimpy.
Small blue colored spark.
What should I check next?
(Plug is as specified in the manual from Big BF after carb rebuild).
HELP?!
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« Last Edit: March 03, 2020, 07:54:49 AM by SpidyJ »
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1999 Fast Black Interstate
Peace,
johnnywebb
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Bret SD
Member
Posts: 4306
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San Diego, Ca.
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« Reply #1 on: March 02, 2020, 03:54:30 PM » |
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Have you checked cylinder compression?
Maybe a valve problem?
How many miles on her?
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Bret
02 Standard -- Blue & White
82 Aspencade -- Red
“No man has the right to be an amateur in the matter of physical training. It is a shame for a man to grow old without seeing the beauty and strength of which his body is capable.” Socrates
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SpidyJ
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« Reply #2 on: March 02, 2020, 03:58:57 PM » |
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Have you checked cylinder compression?
Maybe a valve problem?
How many miles on her?
Will check compression next. What should it be? (Guess I can check the manual if you don't know  ) Only 41K miles. |
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1999 Fast Black Interstate
Peace,
johnnywebb
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Challenger
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« Reply #3 on: March 02, 2020, 04:17:00 PM » |
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Swap the plug with another cylinder and recheck if that one fires ok, Could be just a bad plug. Start it up in a dark shed or at night and see if you see in spark bleed around the coil wire. Do the cheap $hit first. Good luck  |
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wirral_biker
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« Reply #4 on: March 02, 2020, 04:45:47 PM » |
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Swap the plug with another cylinder and recheck if that one fires ok, Could be just a bad plug. Start it up in a dark shed or at night and see if you see in spark bleed around the coil wire. Do the cheap $hit first. Good luck As above. My front left failed to warm up unless over 3,500 rpm...so I had to remove the carb bowl and clean the jet. All perfect after that. Used Sea Foam....useless. |
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I will never learn, on my 4th Valkyrie now !
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h13man
Member
Posts: 1746
To everything there is an exception.
Indiana NW Central Flatlands
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« Reply #5 on: March 02, 2020, 07:56:03 PM » |
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Replace all the plugs at once. If one has gone bad others are weak also. Mine has done this twice right at 10,000 mi. at cold start ups. Running Iridiums at the present which have over 12,000 mi. but acted like they wanted to foul when I rode it late December but cleared up within a 1 mi.
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SpidyJ
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« Reply #6 on: March 03, 2020, 07:58:00 AM » |
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Swap the plug with another cylinder and recheck if that one fires ok, Could be just a bad plug. Start it up in a dark shed or at night and see if you see in spark bleed around the coil wire. Do the cheap $hit first. Good luck Well I'll be ding danged! The problem followed the plug!! In all my years I ain't never had a plug go bad like that...and I've changed a chit ton of plugs in my day! Now wondering what new plugs to use instead of the NGK DPR7EA 9 !?  |
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1999 Fast Black Interstate
Peace,
johnnywebb
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98valk
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« Reply #7 on: March 03, 2020, 12:52:31 PM » |
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Swap the plug with another cylinder and recheck if that one fires ok, Could be just a bad plug. Start it up in a dark shed or at night and see if you see in spark bleed around the coil wire. Do the cheap $hit first. Good luck Well I'll be ding danged! The problem followed the plug!! In all my years I ain't never had a plug go bad like that...and I've changed a chit ton of plugs in my day! Now wondering what new plugs to use instead of the NGK DPR7EA 9 !? Bought my DR200 used from a dealer with 600 miles. Put a few hundred more miles on it until one morning she just stalls out miles from home. she would start but not idle. figured out if I kept RPMs very very high, she would stay running but rough. got home. it was the plug, partially shorted out. Put new plug in and over 4k miles later still on the same new plug. for valkyrie I'm running CHAMPION POWERSPORT SPARKPLUG 8812. very please with them and the added performance they provide. |
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1998 Std/Tourer, 2007 DR200SE, 1981 CB900C 10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp
"Our Constitution was made only for a Moral and Religious people. It is wholly inadequate to the goverment of any other."
John Adams 10/11/1798
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9Ball
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« Reply #8 on: March 03, 2020, 12:57:01 PM » |
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Swap the plug with another cylinder and recheck if that one fires ok, Could be just a bad plug. Start it up in a dark shed or at night and see if you see in spark bleed around the coil wire. Do the cheap $hit first. Good luck Well I'll be ding danged! The problem followed the plug!! In all my years I ain't never had a plug go bad like that...and I've changed a chit ton of plugs in my day! Now wondering what new plugs to use instead of the NGK DPR7EA 9 !? Based on my experience, there’s nothing wrong with the NGK plugs. They are cheap and will give you good service. You can replace them several times over for the price of iridium or other high -end plugs. |
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VRCC #6897, Joined May, 2000
1999 Standard
2007 Rocket 3
2005 VTX 1300S
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SpidyJ
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« Reply #9 on: March 03, 2020, 02:08:44 PM » |
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Swap the plug with another cylinder and recheck if that one fires ok, Could be just a bad plug. Start it up in a dark shed or at night and see if you see in spark bleed around the coil wire. Do the cheap $hit first. Good luck Well I'll be ding danged! The problem followed the plug!! In all my years I ain't never had a plug go bad like that...and I've changed a chit ton of plugs in my day! Now wondering what new plugs to use instead of the NGK DPR7EA 9 !? Based on my experience, there’s nothing wrong with the NGK plugs. They are cheap and will give you good service. You can replace them several times over for the price of iridium or other high -end plugs. I put in the Iridiums.....so far so good! Did a WOT test from 70 to about 100....no missing at all. |
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1999 Fast Black Interstate
Peace,
johnnywebb
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Challenger
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« Reply #10 on: March 03, 2020, 03:12:18 PM » |
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I changed a set of NGK plugs in a buddy's bike that had 85000 miles on them and looked brand new, Replaced with NGKs as I did on my Valks. I've had several Champion plugs fail shortly after install. (not in Valks) Some times things just go bad, Glad you figured it out and it wasn't really expensive. |
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gordonv
Member
Posts: 5760
VRCC # 31419
Richmond BC
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« Reply #11 on: March 03, 2020, 08:22:05 PM » |
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I put in the Iridiums.....so far so good! Did a WOT test from 70 to about 100....no missing at all. I also went with Iridiums. Cost about 3x the price, but are suppose to last 100K miles. |
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1999 Black with custom paint IS   |
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indybobm
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« Reply #12 on: March 04, 2020, 05:18:31 AM » |
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We are supposed to replace plugs?  The Valkyrie is so easy on them, its like changing the air in the tires. |
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So many roads, so little time
VRCC # 5258
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SpidyJ
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« Reply #13 on: March 04, 2020, 05:20:37 AM » |
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I changed a set of NGK plugs in a buddy's bike that had 85000 miles on them and looked brand new, Replaced with NGKs as I did on my Valks. I've had several Champion plugs fail shortly after install. (not in Valks) Some times things just go bad, Glad you figured it out and it wasn't really expensive. I've heard about Champs getting sucked into cylinders but never had any plugs fail on me.... |
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1999 Fast Black Interstate
Peace,
johnnywebb
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98valk
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« Reply #14 on: March 04, 2020, 05:58:56 AM » |
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I changed a set of NGK plugs in a buddy's bike that had 85000 miles on them and looked brand new, Replaced with NGKs as I did on my Valks. I've had several Champion plugs fail shortly after install. (not in Valks) Some times things just go bad, Glad you figured it out and it wasn't really expensive. I've heard about Champs getting sucked into cylinders but never had any plugs fail on me.... 30k on the champs, still ohm spec same as new. |
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1998 Std/Tourer, 2007 DR200SE, 1981 CB900C 10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp
"Our Constitution was made only for a Moral and Religious people. It is wholly inadequate to the goverment of any other."
John Adams 10/11/1798
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bassman
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« Reply #15 on: March 04, 2020, 06:35:09 AM » |
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We are supposed to replace plugs? The Valkyrie is so easy on them, its like changing the air in the tires. I rotate the air in my tires every 60 days or 3000 miles.......whichever comes first  |
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h13man
Member
Posts: 1746
To everything there is an exception.
Indiana NW Central Flatlands
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« Reply #16 on: March 04, 2020, 07:15:59 AM » |
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Whatever OEM is per vehicle. Champions in a GM, no friggin' way lesson learned the hard way. AC only. NGK is predominantly used in most metric vehicles.
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Jess from VA
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« Reply #17 on: March 04, 2020, 08:01:11 AM » |
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Every NGK I ever pulled looked like it had been in there for two weeks.
I've changed two bikes twice, and they never noticeably ran any better. Maybe I got one MPG better, and maybe not.
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