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Old 06-18-2010, 11:29 AM   #61
tmex
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Quote:
Originally Posted by JRWooden
Tmex:

Our bikes have a third cold start injector or am I reading you wrong?

I have a mid-80's Toyota car that indeed has a "cold start injector" mounted in the middle of the intake manifold that serves that purpose, but most of the more recent designs I have seen (cars... not bikes) seem to just use the regular injectors to meet the same need....
That is what I thought, but I could be wrong. If you listen carefully you can hear an injector cycling when the ignition is switched on. I thought it was separate, but don't know that for a fact. In any case cycling the key gives the process a chance to "prime the pump" more than once.
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Old 06-18-2010, 09:07 PM   #62
JRWooden
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Ya know ... I just went out and turned the key on ... now I'm confused...

Usually I hear a kind of a buzz/beep escalating tone that I pinpointed to the fuel pump pressurizing the rail (I think).

Tonight all I hear is a clikca-clicka-clicka which I think is the idle air control stepper motor positioning its self for a cold start. (idle up)...

I think I may have to spend a few months at Wyotech so I don't feel so stupid..........

I need some sponsors..........
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Old 06-19-2010, 08:31 AM   #63
JoelWisman
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There's no cold start injector on these bikes and I don't think the bike cycles the injectors with the key. Both would be nice but the EPA and DEQ, and probably DEA are against such these days :(

The fuel pump only primes if the fuel pressure sensor on the fuel rail senses the system is not still pressurized as happens over time when fuel bleeds past the check valve on the fuel pump.

I'm pretty sure all the clicks before engaging the starter are relays and the idle air control valve.

I miss cold start valves.
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Old 06-19-2010, 02:28 PM   #64
JRWooden
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Joel...
You reckon the EPA would be ok with one of these?

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Old 06-19-2010, 02:30 PM   #65
JRWooden
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Quote:
Originally Posted by JoelWisman

The fuel pump only primes if the fuel pressure sensor on the fuel rail senses the system is not still pressurized as happens over time when fuel bleeds past the check valve on the fuel pump.
Thanks!

Memo to file ...

The Beeeeeeeeeeeeeep sound means I'm not riding often enough!
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