Question about Harley Davidson FLHTCUI Electra Glide Ultra Classic Motorcycles

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I have a 2005 harley FLHT that I have gpt the PO505 code. During cold starts the bike idles fine then after a restart it idles at 800 RPM. After driving for a good distance the idle will go back to 1000 RPM. During the low idle the bike pops when I start off. I installed a Power comander with there program. Any thoughts Thanks

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  • Harley Davidson Master
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Hi Bjohnson16, popping, coughing, spitting, or backfiring through the carburator or induction module can be caused by air getting sucked in combustion chamber do bad intake seals leaking. Leaking exhaust gaskets can also be suspect. Remove air cleaner and backing plate, while engine is idling spray WD-40 or Brake Kleen around intake manifold to head area, if RPM's increase you have an intake leak and seals need to be replaced, also spark plugs will be burning whiter than normal. Good luck

Posted on Jun 21, 2015

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Posted on Jan 02, 2017

  • 6 Answers

SOURCE: Pulsar RPM or idling problem.

try getting the timing checked.

Posted on Dec 12, 2008

  • 298 Answers

SOURCE: idle problem when warmed up

Hi there!

On the carburetor, there is an idle knob. Make sure it is not set too high. This is normal during a cold start so make sure to adjust the idle knob back at 1,100 RPM after your engine is warmed up.

Also, make sure the choke system is clean and is free. Throttle cable should have an allowance of just about .8cm.

The engine idle may also be controlled with the thermostat connected to the grill fan. it will normally idle up to about 2,000 rpm when it senses that the engine is too hot but not 4,000.00 make sure this system is working well.

let me know if this helps
-levibit

Posted on Mar 29, 2009

finish line
  • 207 Answers

SOURCE: Bike starts fine and idles, when i twist the throtle it stalls

does this happen all the time or just sometimes?if it happens all the time you need t change your spark plug sometimes you probally have water in the gas drain the carb bowl the little flat head brass screw on the bottom of the bowl make sure your gas is on to flush it out buy some stabil ethonal treatment and run it every tank fuel good luck

Posted on Jun 25, 2009

  • 163 Answers

SOURCE: 1997 harley davidson flht when hitting the starter

Clean and tighten the battery terminals! Spark at the battery terminal indicates a loose connection.

Posted on Sep 04, 2009

wd4ity
  • 4565 Answers

SOURCE: High Idle On Start-up.

Most fuel injected motorcycles do start up in a "fast idle" mode. Although I don't know much about fuel injection on Harleys (H-D will not tell you much about it unles you are one of their technicians), I don't think the system is equipped with an engine temp sensor. Since the crank case sensor get it's pulses from pockets cut into the outer edge of the left side flywheel half, the sensor will have oil on it.

Posted on Sep 24, 2009

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1 Answer

Idle problem when warmed up


Hi there!

On the carburetor, there is an idle knob. Make sure it is not set too high. This is normal during a cold start so make sure to adjust the idle knob back at 1,100 RPM after your engine is warmed up.

Also, make sure the choke system is clean and is free. Throttle cable should have an allowance of just about .8cm.

The engine idle may also be controlled with the thermostat connected to the grill fan. it will normally idle up to about 2,000 rpm when it senses that the engine is too hot but not 4,000.00 make sure this system is working well.

let me know if this helps
-levibit

Mar 29, 2009 | 1999 Suzuki GSX-R 600

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