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Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

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  #11  
Old 20th June 2012
wedge's Avatar
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Originally Posted by Neckkbone View Post
I think your petcock is fine. I think you probably hit the rev limiter.You didn't memtion any mods so I am assuming the bike is stock. Not quite sure of rev limit on a 1200R model though.
Uhhh... Didn't mention any mods? How about a CV44 for atarters? Then what mods does he have to be able to suck that much air into the engine?

Yes, I would put a pingle on it regardless if that is the current problem or not. Fuel delivery is a problem with lots of vehicles that people modify to race with. We used to find guys at the circle track with cars still running the entire stock fuel line from the fuel cell forward, and they wondered why they couldn't tune the carburetor?

Fuel delivery is one of the first things that should be considered always.

Oh, I disagree with Pingle being overpriced. In my opinion, quality comes first, and in that respect they are priceless.
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  #12  
Old 20th June 2012
flyboyJ flyboyJ is offline
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Thanks for all the input. And, yes, the bike perks right up when I let off the throttle and in all other situations.
I guess I'll go with the pingel, but first I'm going to try to pinch the vacuum line at idle so as to keep the valve open and hit the highway and see if that works.
I'll let you know, provided - of course - that I don't get arrested during 'testing'.
Cheers.
flyboyJ
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  #13  
Old 22nd June 2012
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WHOA!! Thought you were running stock 1200R. Also thiought 04-up were ALL efi (my bad). At 88 ci. fuel could be a problem!
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  #14  
Old 22nd June 2012
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Originally Posted by flyboyJ View Post
Thanks for all the input. And, yes, the bike perks right up when I let off the throttle and in all other situations.
I guess I'll go with the pingel, but first I'm going to try to pinch the vacuum line at idle so as to keep the valve open and hit the highway and see if that works.
I'll let you know, provided - of course - that I don't get arrested during 'testing'.
Cheers.
flyboyJ
Well guess we should we call the bail bondsman today.....
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  #15  
Old 22nd June 2012
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You pinch that line at idle and as soon as it bleeds off you are out of fuel

Actually at 125 in 5 th the vacuum should be coming back I think !
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  #16  
Old 22nd June 2012
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Well guess we should we call the bail bondsman today.....
2 days... I sure hope it's just a bail bond that he needs. Lets face it, pushing these things over 100 is always a bit on the shaky side unless you have cartridge forks and some good shocks in the back too, and another degree on the front end wouldn't hurt either.

By the way, Works has cartridges for these forks right now for $399.00 which is cheaper than Works springs with Intiminators and logically much better. Plus I have it from a direct source that Progressive will have cartridges for the sporty within a couple of months. (Just some interesting info that I thought everyone would like to know).
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  #17  
Old 1st February 2013
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what fixed it?
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  #18  
Old 2nd February 2013
flyboyJ flyboyJ is offline
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Default The Fix

It was a venting issue. I removed the one-way valve that clips to the left side, under the battery cover. That cured it.
I can't recall now as to whether I bought a new valve - it's winter here - but I believe I did.
I've never found the need for a Pingel myself. Plus, even though I routinely shut off my stock fuel valve, sometimes I forget. I'd always worry, with a Pingel, that if some grit or something prevented the float-bowl from returning to the proper position and I forgot to turn it to 'off', I could end up with the cylinders getting a wash down with fuel.
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