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05-26-2007, 03:43 PM
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| |  Eating plugs
I have a 1987 fxstc with a crane hi -intensity ignition /single fire dual coils my problem is that the bike will run great for one day and then the next it starts to miss and fart,so I replace the plugs and here we go again.Is it the coils and how do you check them or is it the ignition system .I need advise on why is it eating plugs.
Posted by: littlebob on May 22, 07 1:05:47 pm |
05-26-2007, 03:44 PM
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What do you mean by eating? Burning them up?
Posted by: JCOURNEYAP on May 22, 07 6:26:36 pm |
05-26-2007, 03:44 PM
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They have little spark left if any and totally black .I have traced the wires from the coils and ignition and have found no cracks or bare wires at all.I use a premium fuel also and have reset mixture to ran a little leaner.
Posted by: littlebob on May 22, 07 8:15:04 pm |
05-26-2007, 03:44 PM
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Sounds like waaaay toooo rich...
What Carb..??
What jets..??
What timing..??
If it was the ignition or coils it wouldn't run good for that day...
Talk to us...
Posted by: frisco-rigid on May 22, 07 9:02:12 pm |
05-26-2007, 03:45 PM
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If the plugs are black when you pull them, the carb is running way too rich. If you look on the S&S web site they have a real sound procedure for how to jet a carb. It will get you very close and the basic process works for most any carb. Did you just get the bike? Have you had it awhile and it just started happening? Give us a history so we can help you out Bob, the weather is too nice to be wrenchin', it's time for ridin'.
Posted by: Soulman on May 23, 07 7:09:39 am |
05-26-2007, 03:46 PM
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Yes it is nice out.I have had the bike 3 springs ( first harley)I am the second owner .Have service manuals on all,I can hold my own on mechanical till now and I am not afraid to wrench my own.I have kept the bike indoors all winter and drained all fluids and replace all filters, PLUGS before riding ,carb is a super E S&S.Have a Crane Fireball 316-2 cam .I am running drap pipes with AR cones.Jets ? Timing ?Carbs are not my best thing even in a food group.willing to learn.It just started this year toke bike out of house filled fluids started right away rode 3 days later replace plugs because missing then ran fine and so on.for 2 weeks and 4 sets of plugs.Thanks for input.
Posted by: littlebob on May 23, 07 10:57:20 am |
05-26-2007, 03:46 PM
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If it just started this year then it may not be the actual jetting. I am wondering if the enrichener (choke) may have something in it holding it open and allowing more fuel than necessary into the carb. That is a pretty easy check. just take the choke out where it threads in the top of the carb and check to make sure there is nothing in it that could hold it open. Hey Frisco, what do you think? Runs fine for 2 seasons and now rich?
Posted by: Soulman on May 23, 07 11:55:59 am |
05-26-2007, 03:47 PM
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Sure, that sounds like a great place to start, good call Soul...
I wish our new good friends that join and seek a lil assistance would include all info possible so it would be easier for us to assist... For instance that it ran good for two seasons and just started this new prob...
Lil Bob, may I suggest that it is time to make carbs/jets/timing part of your new food group... These devil machines require personal care so it's time to learn... For instance...
Find out what jets you're runnin and if your float is adjusted correct and the float needle/seat are clean and closing... A "not closing" needle and seat can create a rich condition...
BTW, did the accel pump setting get changed, those super E's pump a humongous stream and can really screw up good jetting job...
Posted by: frisco-rigid on May 23, 07 10:12:53 pm |
05-26-2007, 03:47 PM
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Lil Bob. Beside changing fluids and plugs did you do any tinkering or adding of parts over the winter? Upgrades of anykind?
You say the plugs are black? Are they wet also. Are you adding extra oil, Exhaust smoking a little more then before?
What is the color of your exhaust? After you warm it up good hit the throttle and see if it smokes and what color. The smoke will tell you if your burning to rich or burning oil.
Posted by: JCOURNEYAP on May 23, 07 10:31:11 pm |
05-26-2007, 03:47 PM
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I pulled the carb tonight and am goin to tare it down and see if there is any thing inside and do a good cleaning on all parts see where this leads me.No the plugs are not wet and I did not do any upgrades this year. The main jet size is a 72 .I am hungry to learn about my new best friend.point taken on the info.Exhaust does not seem to be smoking more.I'll let you know how this works.Thank again for the info.
Posted by: littlebob on May 24, 07 11:52:05 pm | | |
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