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The Black Knight...Sunny ride was ALMOST a success ;)
trek97:
I started getting fast idle issues. Sorta like a vacuum leak but not really like a vacuum leak.
Julie and I compiled a list of things to check. Thanks Lady. ;)
First was plugs and caps. They were fine.
So I made a pair of more substantial links, as the originals were bent.
Installed and re-synced then tuned A/F mix. I found it too lean. So with 3/4 turn in...
Viola, The fast idle calmed right down, now holds a smooth and steady 1200.
For fun, I installed a Dyna DS1-1, got her dialed in w my stroboscopic light and just like that she's done and ready for summer adventures.
Still need to flip that pesky #1 header clamp. ::)
mattsz:
--- Quote from: trek97 on March 17, 2019, 09:36:56 AM ---I started getting fast idle issues. Sorta like a vacuum leak but not really like a vacuum leak.
...
So I made a pair of more substantial links, as the originals were bent.
--- End quote ---
So the bent links were the cause of your fast idle problem? Do you know how they got bent (I don't recall that you dismantled your carb rack enough to remove those links)?
trek97:
Yeah, sorry I ddnt bother to add the pics.
I took them completely down and changed all the o-rings on the fuel feed pipes. Thank goodness, as I found the center T fitting still full of debris.
Actually I bent them, being a brute during the first sync. ::)
The fast idle problem was the combination of Lean A/F mix AND the sync. But mostly A/F mixture.
the first one I turned in #4. the idle really took off, faster.
(Which is exactly what you want it to do. As A/F mix is properly tuned in at fastest idle.)
So I knew I was onto something. Cranked in the others. Then went through and dialed them all in/out for fastest idle properly.
Afterwards, I re-adjusted idle speed for 1200rpm. Running smooth as silk. :)
trek97:
Also mattsz, here's some pics I did take during. Not the best as sometimes I get lazy about it.
Debris stuck in the T fitting, even after ultrasonic.
Rotten o-rings.
New on the left, old and flat on the right
Best to disassemble carbs as theres plenty of places for debris to get trapped in the fuel feed galleys.
I also found one float was a half gram heavier than the other three, so I replaced it w a spare that averaged same as the others.
trek97:
Pulling and swapping that #1 clamp was a PITA!!!! :P
Everything went back together as it should, but if theres any leaks I will probably have to drop that darned oil pan to get everything properly aligned and torqued.
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