Date: 28-03-24  Time: 14:15 pm

Author Topic: FZS1000 fast idle  (Read 976 times)

ptolemyx

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FZS1000 fast idle
« on: 10 September 2019, 02:49:18 pm »

Bike has been laid up for a while. I had the carb's ultrasonic cleaned because the throttle valves were stuck in the closed position . They had previously been full monty Ivanised by Mike and all was well up until I had to stop riding the bike. Now has 7k error code which is obviously the EXUP faulty after a period of non-running. I will sort this out but...….
     Bike started up fine but settled to a very fast idle, well over 2000rpm and fiddling with the idle adjuster does nothing. Is this likely to be due to the EXUP  before I check the throttle cables and, if needed, tear the carb's back off - which I'm loathe to do yet again? Could the fast idle be due to incorrect float heights when reassembled by the ultrasonic guys at Ragged Moto?
« Last Edit: 10 September 2019, 03:08:24 pm by ptolemyx »
when in doubt go flat out

unfazed

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Re: FZS1000 fast idle
« Reply #1 on: 10 September 2019, 03:27:19 pm »
Check that the choke cable is not seized and releases fully and all the choke plunger return fully to their home position before dismantling anything

Falcon 269

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Re: FZS1000 fast idle
« Reply #2 on: 10 September 2019, 05:09:36 pm »
Do the same with the throttle cables.  Ensure that you have more slack than usual and that the throttle plates snap shut when you close the throttle. 

You should be able to see the end of the idle adjuster where it contacts the throttle spindle.  Again, make sure that it is allowing the throttle to close fully.

Eliminate possible mechanical hang-ups first before looking deeper into the carbs. 

The fault isn't EXUP related.

Trebus

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Re: FZS1000 fast idle
« Reply #3 on: 10 September 2019, 06:16:26 pm »
After that rule out an air leak on the carb inlet rubbers or blanking caps.
« Last Edit: 10 September 2019, 06:17:03 pm by Trebus »