Avoiding a "Push" start - Page 2 - Triumph Forum: Triumph Rat Motorcycle Forums
Air Cooled Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, Bobber, T100, Speedmaster, America, Thruxton, and Scrambler. Sponsored by: triumphtwinpower.com

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post #11 of 22 (permalink) Old 07-31-2019, 09:42 PM
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Originally Posted by jackthebiker View Post
I have started pulling the fast idle out to the first notch when the engine is warm, no more starting issues.

Took me a while to accept and do that, but in fact that's what the owners manual suggests.
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post #12 of 22 (permalink) Old 08-01-2019, 01:26 PM
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Forchetto is correct - manual advises first position out for every start - works for me. I do it even in 95 deg Houston...
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post #13 of 22 (permalink) Old 08-03-2019, 10:08 AM
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I guess having the fast idle pulled out allows a little more air past the throttle valves. Maybe this makes turn over just a wee bit easier on the starter motor? There is no electrical jiggery pokery going on with that mechanical push pull plunger.
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post #14 of 22 (permalink) Old 08-03-2019, 10:41 AM
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electrical jiggery pokery
one of my favorite phrases, along with: "yes, ma'am, the problem was caused by FM" (****ing magic)
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post #15 of 22 (permalink) Old 08-03-2019, 08:00 PM
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There is no electrical jiggery pokery going on with that mechanical push pull plunger.
The extra air may affect ECU input from MAP, intake temp and O2 sensors? In some way or another, the bike is always sniffing its own farts..

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post #16 of 22 (permalink) Old 08-05-2019, 04:46 PM
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The idle speed knob is underneath the fake float bowls. The slide you pull out one stop before you start is likely an enricher jet or something like that.
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post #17 of 22 (permalink) Old 08-06-2019, 12:30 AM
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The idle speed knob is underneath the fake float bowls. The slide you pull out one stop before you start is likely an enricher jet or something like that.
Enriching jets ?? The only sensible thing for that knob to do is tell the fuel injection to inject more fuel at each impulse. Theres only two injectors, no jets that im aware of.
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post #18 of 22 (permalink) Old 08-06-2019, 01:11 AM
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@Twintorsk

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or something like that.
Yes, exactly.
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post #19 of 22 (permalink) Old 08-07-2019, 05:26 AM
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Enriching jets ?? The only sensible thing for that knob to do is tell the fuel injection to inject more fuel at each impulse. Theres only two injectors, no jets that im aware of.
@Forchetto explains the workings of this like a pro...

https://www.triumphrat.net/air-coole...ml#post4647633
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post #20 of 22 (permalink) Old 08-07-2019, 06:05 AM
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@Forchetto explains the workings of this like a pro...

https://www.triumphrat.net/air-coole...ml#post4647633
Yes, i would have thought that engine temp sensor governed cold starts just like on cars
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