08 heritage CAMS
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Stage III
Joined: Apr 2024
Posts: 3
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From: Atco nj
08 heritage CAMS
08 heritage I put fueling 574 cans in w/fuel Moto afj pushrods and fueling race lifters I have a power vision and I’m using the pv map. The bike runs good until it gets to normal operating temp then bucks and hesitates. I replaced intake gaskets and exhaust gaskets what next??
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,063
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From: San Diego, CA
08 heritage I put fueling 574 cans in w/fuel Moto afj pushrods and fueling race lifters I have a power vision and I’m using the pv map. The bike runs good until it gets to normal operating temp then bucks and hesitates. I replaced intake gaskets and exhaust gaskets what next??
Did you actually find an intake and exhaust leak?
If you just threw parts at it, I would suggest that can get expensive. Next time, you'd be ahead of the game if you checked for an exhaust or intake leak before replacing parts...
Have you checked for engine diagnostic codes? That could point you in the right direction..
Go over your work...
Make sure you properly reconnected the various sensors around the induction module like the air intake temp sensor, etc. Make sure the connections are tight, and good (no dirty, corroded, or bent pins).
Make sure you got a good solid connection when you reattached the fuel line to the tank. Sometimes that connection can be tricky.
Double check that you are using the correct tune for your mods.
Let us know what you find..
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Stage III
Joined: Apr 2024
Posts: 3
Likes: 1
From: Atco nj
Hattitude I did spray carb cleaner around the intake gaskets and the rpm bogged so I thought that would be reason enough to replace them. Did it again and no change to the rpm. I only replaced exhaust gaskets b/c they came in the gasket kit for the cams. I did just find that both spark plug nipples were loose so I will go for a ride and see if it helps any.
Last edited by Ididthat; Apr 20, 2024 at 09:18 AM.
Grand HDF Member
Joined: Jul 2007
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From: Bates County MO
Fuel pressure- I've seen this problem on Softails where the hose connecting the check valve to the regulator develop internal leaks, ( from rubbing inside the tank) which reduce the available fuel to the injectors, inducing a lean condition. 4 Bar system, which means it should build/maintain 58-62 PSI while priming, and running. Time to do some testing.
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