 OK, Didnt know whether to post this in Technical
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OP
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I have been reading about the fuel injected America and Speedy coming with a Choke. Why would be the question. I have had a few other fuel injected triumphs and no choke ( speed 4, speed 3, Rocket 3 ) I just dont understand what the need is for it on any fuel injected bike. I had also read that Triumph warns that if the Choke is left on too long on the fuel injected bike, the pipes will turn blue. Can you say design flaw??? Anybody had one long enough to really check and see how this injection system works, is it a direct injection system? Or more like a throttle body ( basically an electronically injected Carb )?
Mark
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Re: OK, Didnt know whether to post this in Technical
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Joined: Jan 2005
Posts: 7,643
Monkey Butt
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Monkey Butt
Joined: Jan 2005
Posts: 7,643 |
Hi Mark I should be able to answer that question after next Friday as I have just ordered the EFI manual for the speedmaster.
Ray(UK)
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Re: OK, Didnt know whether to post this in Technical
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Joined: May 2006
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Cool, just been rather curious about it.
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Re: OK, Didnt know whether to post this in Technic
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Joined: Jan 2005
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Loquacious
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Loquacious
Joined: Jan 2005
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it is prob a fast idle, the victories have that to help them warm up faster
Frank
(Former)05 BA tbike pipes, ai removed, Freak, mikuni hsr 42's, 904, ported/polished head, 1mm oversized valves
NOW-2010 silver and black tbird
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Re: OK, Didnt know whether to post this in Technical
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Joined: Jan 2005
Posts: 4,074 Likes: 83
Loquacious
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Loquacious
Joined: Jan 2005
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It is a throttle body injection type setup and i can imagine the "choke" just richens the mix and maybe increases the idle.
If you leave the choke on too long on the carb models it will blue the pipes so I suppose it stands to reason.
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Re: OK, Didnt know whether to post this in Technic
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Joined: Jan 2005
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Oil Expert
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Oil Expert
Joined: Jan 2005
Posts: 2,362 |
That doesn't make sense. Chrome blues from overheating, but running the bike richer won't do that - they run hotter from being lean, not rich.
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Re: OK, Didnt know whether to post this in Technic
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Joined: May 2006
Posts: 277
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That would be in theory, but the problem is the system. If you have just a little bit of fuel being dumped out the exhaust, the air injection basically makes it burn there, small amount of burn, not much heat. However if you dump a lot more fuel into the exhaust, it will burn so much that it gets hotter. And When you put open pipes on the bike and keep the air injection, well you just make matters worse, pipes get blue blue blue!!! At least I assume that is the theory, Chy would know more!
Mark
Last edited by skid; 07/12/2008 6:34 PM.
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