I give up!!!
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Joined: Jun 2008
Posts: 66
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From: Virginia
I give up!!!
a friend and i have been working on his fat bob, installing a 103'' stage II kit ( jugs, flat top pistons, and 255 cams) exact same setup as mine, and we have not been able to get this bike up and running. We believe its the timing. Everytime we get the damn thing assembled we fire it up and it either 1. runs erraticly, or 2. doesnt fire up at all. PLEASE SOMEONE HELP US!
Club Member
Joined: May 2006
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From: the 50s & the 60s
What do you mean by
"Everytime we get the damn thing assembled"... ??
Are you making some changes along the way
to try and correct an unknown problem??
mud
Road Warrior
Joined: Sep 2008
Posts: 1,318
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From: Texas Panhandle
No offense, but as an auto mechanic I am constantly getting cars in the shop that the customer tried to "fix" themselves. It almost always ends up costing more than the project would have cost in the first place. Although twin cams aren't all that technologically challenging, they do require a certain level of mechanical ability and skill. Lack of knowledge is what makes the shops hourly rate worth the money.
Last edited by Not E'nuff Harley; Nov 29, 2008 at 11:08 AM.
Road Master
Joined: Nov 2007
Posts: 1,223
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From: Peoria, AZ
Year of the bike would be good info. On top of what has been posted: got the spark plug cables in the right coil spot? Sounds stupid but ??? Assuming the cams are timed correctly and/or the valves are opening and closing properly, you have proper compression in both cylinders and didn't break off a ring or install incorrectly, everything is electrically connected correctly, fuel vent and lines are not restricted, air is not leaking at the intake, the battery has a full charge, and it is a carbed bike and not an EFI requiring a Stage II upgrade and/or sensor re-synching, then static timing is located in Chapter 8, Electrical, in the HD service manual. There are too many variables to pinpoint to exactly one.
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From: along the shore of Mishigami
Were the alignment dots and marks all lined up on the cams and gears? Check all your EFI/ECM connections and especially the crank position sensor. It uses the Hall effect on the notches on the flywheel to control the firing signal to the ECM.
