 Fuel or ignition? |
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| last337 |
 Dec 6 2015, 12:13 PM
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#21
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Member  Group: Members Posts: 421 Joined: 4-December 12 From: New Orleans Member No.: 15,221 Region Association: None  |
Well its definitely carbs although no idea what about them. Plugs #2 & #3 look ashy like lean foul and #1 & #4 look perfect. Any advice on what I might look for on that?
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| stugray |
Dec 6 2015, 02:15 PM
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#22
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
QUOTE(last337 @ Dec 6 2015, 11:13 AM)  Well its definitely carbs although no idea what about them. Plugs #2 & #3 look ashy like lean foul and #1 & #4 look perfect. Any advice on what I might look for on that? If one side (bank/carb) is different from the other side, it is unlikely it is a spark problem. my next guess is that the carbs are out of synch. Do you have a synchrometer? IMO, they are an absolute must for dual carbs. Even with the tangerine racing linkage, you have to set them at one place (RPM range). |
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| BK911 |
Dec 6 2015, 03:30 PM
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#23
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Senior Member Group: Members Posts: 672 Joined: 19-February 04 From: Rocky Top, TN Member No.: 1,674 Region Association: None |
QUOTE(stugray @ Dec 6 2015, 04:15 PM) QUOTE(last337 @ Dec 6 2015, 11:13 AM) Well its definitely carbs although no idea what about them. Plugs #2 & #3 look ashy like lean foul and #1 & #4 look perfect. Any advice on what I might look for on that? If one side (bank/carb) is different from the other side, it is unlikely it is a spark problem Unless those plug wires are crossed. (IMG:style_emoticons/default/smile.gif) 2nd the carb synch problem. |
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| last337 |
Dec 10 2015, 07:06 PM
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#24
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Member Group: Members Posts: 421 Joined: 4-December 12 From: New Orleans Member No.: 15,221 Region Association: None |
I am still waiting on some rebuild kits to come in but after cleaning these things thoroughly I am amazed how much crud was hiding inside of them. I am starting to think that it may have been a problem either a problem with the seats for the main jets or the transition ports, or both. The pic is of the crud left in the cleaning liquid after two days. The liquid itself went from almost clear to almost black. I could barely see the bottom of this container with an LED flashlight.
So my question is this, Tomlinson always talks about how a small piece of trash can cause huge problems in these things. And granted, there can be a lot of trash hiding inside if them; I know that now. But after really getting to know these things, the channels inside from place to place seem huge. It would seem that it would have to be a substantial piece of debris to really stop something up. I get that the flow characteristics of air/fuel etc can change based on trash in the bores etc. But can it really cause them to just stop working? In my case, could it cause the transition from idle to main circuit to fail completely?  |
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