STILL issues warm starting. WTF
Thread Starter
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Cruiser
Joined: Feb 2016
Posts: 108
Likes: 6
From: Unityville PA
STILL issues warm starting. WTF
Heres the scoop. I have VH big radius, Big sucker intake and VH fuel pak. The bike starts perfectly fine when cold, but after it gets to normal operating temp the damn thing is a bitch to start! It will crank and crank and crank.... Not all the time but most of it. I smell fuel, so Im not sure if its over fueling or something else. I talked to 3 different techs at VH and each one had me change a few settings each time. My throttle response got much better but this damn hard starting when its warm hasn't got any better. Could this be a tuning issue or something else. I don't want to dump a pile of money into things it don't need like maybe a different tuner or possibly having it dyno'd with the tuner I currently have. I have no CEL lights or any other warnings showing up.... It eventually starts but cranks and carries on before it fires...
Thread Starter
|
Cruiser
Joined: Feb 2016
Posts: 108
Likes: 6
From: Unityville PA
Heres the scoop. I have VH big radius, Big sucker intake and VH fuel pak. The bike starts perfectly fine when cold, but after it gets to normal operating temp the damn thing is a bitch to start! It will crank and crank and crank.... Not all the time but most of it. I smell fuel, so Im not sure if its over fueling or something else. I talked to 3 different techs at VH and each one had me change a few settings each time. My throttle response got much better but this damn hard starting when its warm hasn't got any better. Could this be a tuning issue or something else. I don't want to dump a pile of money into things it don't need like maybe a different tuner or possibly having it dyno'd with the tuner I currently have. I have no CEL lights or any other warnings showing up.... It eventually starts but cranks and carries on before it fires...
Extreme HDF Member
Joined: Feb 2015
Posts: 10,907
Likes: 8,758
From: Galt's Gulch - MI
I've no experience using the V&H FP, running a Power Vision, but the quickest way to know if the problem you're experiencing is a tuning issue would be to flash back to the original stock tune and take her out and see if you can replicate the problem. If your hot start issue is gone running the original tune, you'll know it's indeed the FP tune creating the problem 
Road Warrior
Joined: Sep 2014
Posts: 1,872
Likes: 1,325
From: DeLand, Florida
Sounds to me like your computer does not know the engine is warm. Can you look at engine temp with your tuner? It the computer thinks engine is cold when hot, it will over fuel it, as it does when cold. Easy to check. After you try to start when hot, pull a spark plug and see if it is fuel soaked. I think engine temp sensor may be bad.
Club Member
Joined: Apr 2013
Posts: 5,877
Likes: 3,853
From: Cape Cod
Ya might try cleaning the IAC, Idle Air Controller........take off the air cleaner, put a shop rag in the throttle body, the IAC is that hole just inside at the 12 oclock position,
Ignition ON, toggle the kill switch off and on while spraying a cleaner up into IAC hole.......this is done with engine OFF.......
engine breather vents into air cleaner, oil gets pulled along with it........this oil gunks up the IAC.....
My 07 EGUC had the same problem.....this fixed it
Ignition ON, toggle the kill switch off and on while spraying a cleaner up into IAC hole.......this is done with engine OFF.......
engine breather vents into air cleaner, oil gets pulled along with it........this oil gunks up the IAC.....
My 07 EGUC had the same problem.....this fixed it
Last edited by MURPHCC1; Dec 9, 2016 at 06:59 AM.
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Outstanding HDF Member
Joined: Mar 2011
Posts: 2,852
Likes: 816
From: Niagara Falls, Canada.
I would put the original pipes, cleaner and fuel pak back on, then add the 'mods' one by one to see which is responsible for the problem...b.
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Thread Starter
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Cruiser
Joined: Feb 2016
Posts: 108
Likes: 6
From: Unityville PA
Its the original fuel pak. And no it wont tell me temps unfortunately. I thought about just taking the tuner off and running it like that. Allot of people think its my tuner. Im seriously debating getting the fp3 but am afraid ill spend that money for nothing. Ill clean the IAC valve and see if that in fact helps but since i had choppy throttle down low in 1st threw 3rd gear at low rpm im going to assume its tuning issue. Again when the bike throws a fit trying to start it smells of fuel pretty good. When it finally does fire after back firing threw the carb ect... you can see a fuel cloud. Its really getting annoying. I got a beautiful bike and the bitch throws a fit it gets kinda embarrassing around a crowd of people haha
