getting ready to "push the button"
Road Warrior
Joined: Jan 2012
Posts: 1,410
Likes: 30
From: Waterville MN
Cranking and engine that much will wash the cylinders, and you lose the ring seal. That is probably why your compression is so low. If you corrected an ignition issue, now it may not be drawing fuel in properly to run. A squirt or two of oil down each spark plug hole will boost the compression to help the engine draw in the fuel charge.
Stellar HDF Member
Joined: May 2009
Posts: 2,856
Likes: 127
From: Middle of Kansas
You do have to have the throttle wide open when checking compression. Also, I would put a little oil in the cylinders through the spark plug holes. Then if you only have 80 or less your valves are not fully closing or they are leaking for some reason. With oil in the cylinders, and wide open throttle, you should get over a hundred I would think.
Road Warrior
Joined: Mar 2007
Posts: 1,959
Likes: 2
From: Florida
No, they'll bleed down after sitting a few minutes. How many turns do you turn them out from bottom? I know threads are different for different makers, like SE is 25 tpi, 2 1/2 turns. My Taper Lites are higher, something like 40 tpi, 4 turns out. When you turned it over in your video I couldn't hear any popping like I hear in mine, the compression. Maybe it was just the location of your phone.
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Seasoned HDF Member
Joined: Sep 2010
Posts: 10,238
Likes: 799
From: Indiana
You do have to have the throttle wide open when checking compression. Also, I would put a little oil in the cylinders through the spark plug holes. Then if you only have 80 or less your valves are not fully closing or they are leaking for some reason. With oil in the cylinders, and wide open throttle, you should get over a hundred I would think.
I am in the process of re-adjusting the push rods. I removed them to make sure they weren't bent.
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Seasoned HDF Member
Joined: Sep 2010
Posts: 10,238
Likes: 799
From: Indiana
75-80psi both cylinders
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Seasoned HDF Member
Joined: Sep 2010
Posts: 10,238
Likes: 799
From: Indiana
Per instructions, 9 flats or 1-1/2 turns
Road Warrior
Joined: Mar 2007
Posts: 1,959
Likes: 2
From: Florida
1 1/2 turns? That don't sound right. Se are 2 1/2, and they have really coarse threads. You have Velva Touch, right? Well, that's what they say on the web site. Still don't sound right, that means you have about 15 threads per inch, that's really coarse thread.
Last edited by bluharley; Jan 19, 2013 at 06:38 PM.