BOGS DOWN
HDF Community Team
Joined: Dec 2005
Posts: 5,397
Likes: 2,599
From: NC USA
RE: BOGS DOWN
How's the idle when it gets warm enough to bog? I'm thinking it could be (worst case) a piston seizing. That wouldn't show up on a compression test until it was really bad.
Had a chainsaw doing that for a long time. The fuel line had a small crack that opened up when it was warm. So, if it feels like it's leaning out, re-check your work.
Had a chainsaw doing that for a long time. The fuel line had a small crack that opened up when it was warm. So, if it feels like it's leaning out, re-check your work.
Seasoned HDF Member
Joined: Aug 2007
Posts: 8,197
Likes: 3,087
From: NW AR
RE: BOGS DOWN
Check the ignition. Are the timing weights free/lubed a little? Points gapped OK and not burnt? Condensor OK? Replace if there's any question. Check for intake leaks by spraying some carb cleaner around all the joints in the intake path. It's been a few decades since I messed with a shovelhead (THANK GOD), but I seem to recall intake leaks being rather common. Is the carb really clean now? Jets clear? S&S intermediate jets can block off and be a real biatch to clean out. And the main jet seems to clog rather fast too. Float level OK and the valve not sticking?
Cruiser
Joined: Dec 2007
Posts: 213
Likes: 2
RE: BOGS DOWN
ORIGINAL: travis 74
I HAVE A 74 SHOVELHEAD WITH A SHORTY G CARB BIKE RAN FINE4 MONTHS THEN STARTED BOGING DOWN WHEN I GIVE IT GAS CLEANED TANKS AND RELINED CLEANED CARB RUNS FINE TILL GETS HOT
I HAVE A 74 SHOVELHEAD WITH A SHORTY G CARB BIKE RAN FINE4 MONTHS THEN STARTED BOGING DOWN WHEN I GIVE IT GAS CLEANED TANKS AND RELINED CLEANED CARB RUNS FINE TILL GETS HOT
FYI. When you TYPE IN CAPS it means that you are yelling. I am sure that was not your intent so please don't do it, also it is not as easy to read all caps on our end.
Road Warrior
Joined: Dec 2007
Posts: 1,854
Likes: 20
From: Eagle River WI
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Joined: Apr 2008
Posts: 65
Likes: 1
From: St Neots, UK
RE: BOGS DOWN
One other item to check is the carb slide is moving correctly and that it is opening as vacume is created.
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6th Gear
Joined: Oct 2018
Posts: 12
Likes: 3
From: redondo beach , Ca
just put mine back together after major rebuild mine was bogging as well took the teardrop off and rode it around tuning the mixture as i was riding , kept getting bogs lean and rich sides so must be a to much or nor enough or timing. ill check the flapper inside to see if its opening as well per johntheone