Question about 2008 Harley Davidson FLHT Electra Glide Standard

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2008 electra glide wont start intermittant spark to the new plugs

Wont start intermittant spark replaced plugs still wont start started backfire last 10 miles of my trip next morning will not start....thought coil, cam positioning sensor ingnition module

Posted by Anonymous on

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  • Harley Davidson Expert
  • 438 Answers

Bad ignition mod.

Posted on Jan 05, 2015

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 29 Answers

SOURCE: When bike gets worm it runs like ****

Since you have thrown the entire ignition system at it, let's think about fuel. If you were running out of gas it would act as you described. I would start by removing the float bowl. Be careful not to spill any gas because we want to look at the level. It should be over half full. Check the float movement. You should be able to push it up without resistance. Looking from the bottom remove the phillips screw that retains the float axle and the float and needle valve should fall out. If the needle valve has three sides or if the rubber tip is worn, replace it. The 3 sided valves have a tendancy to stick closed and all dealer stock should be the 4 sided version by now. After you re-install the float, leave the bowl off and follow the small vacuum hose from the petcock to the carb. Pull it off at the carb end. Look to make sure it isn't damaged. **** lightly (sorry) or use a vacuum pump on the hose. With the petcock on and gas in the tank, a healthy stream of fuel should pour from the needle valve. If not, the petcock diapragm is shot. If none of this helps, take it for a ride and when it acts up, crack the fuel cap loose and if it takes off the vent in the cap is malfunctioning.

Posted on Jan 05, 2009

  • 69 Answers

SOURCE: 1978 Electra-Glide Starter initionally catches,

sounds like the starter is bad. if access to it easy for you then it can be removed and taken to your local repair shop and rebuilt. Or try locateing one on ebay.

Posted on Mar 12, 2009

  • 296 Answers

SOURCE: no start 09 Ultra Classic Electra Glide

Sounds like your charging system is not charging the battery.

Put a volt meter on the battery, run the engine up to maybe 2,000 RPM. The voltage must be at least 13.8V, but not more than 14.5.

If that is all OK, your battery is worn out, and is not holding sufficient reserve. It would need to be replaced.

Posted on Jun 23, 2010

Testimonial: "waiting on dealer to get back to me...voltage meter on bike reading between 14-16"

  • 33 Answers

SOURCE: 2003 electra glide classic carb engine started

I would have to say from what you have given the crank position sensor has gone bad.

Posted on Oct 06, 2010

czaa
  • 4535 Answers

SOURCE: 2002 harley davidson electra glide ultra glide classic will not start

test batt--must be at 12.6 v for proper fire--mite hav a bad one or alternator is failin------get a book on maintenance details

Posted on Apr 13, 2012

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2008 WONT START WHEN HOT


If you have over 15000 miles I would change the spark plugs and clean the air breather for starters to see if that will help.

Jul 01, 2014 | 2008 Harley Davidson FLHX Street Glide

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2008 harley street glide intermittent spark starts but wont start


Hi Anonymous, and the usual suspects are:
1. Plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discarged.
6. Damaged wire or loose connections at battery terminals especially the ground cable at BOTH ends, ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. If your bike has a CKP sensor you must leave both plugs in
head and check for spark with a 3rd plug. Good luck.

Sep 04, 2012 | 2008 Harley Davidson FLHX Street Glide

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2008 Harley Ultra CVO. When it gets hot the back cylinder spark plug starts missing. Also the power drops considerably. Any solutions?


Hi Anonymous, and the usual suspects are:
1. Plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discarged.
6. Damaged wire or loose connections at battery terminals especially the ground cable at "BOTH" ends, ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. If your bike has a CKP sensor you must leave both plugs in
head and check for spark with a 3rd plug. Good luck and have nice day.

Aug 01, 2012 | 2008 Harley Davidson FLHTCU Ultra Classic...

1 Answer

2002 harley davidson electra glide ultra glide classic will not start


test batt--must be at 12.6 v for proper fire--mite hav a bad one or alternator is failin------get a book on maintenance details

Apr 13, 2012 | 2002 Harley Davidson FLHTCUI Electra Glide...

1 Answer

I have a 2001 Ultra Classic. When i go to start it it wants to backfire really bad and when it does start the rpm gauge wont work, but sometimes you can turn the switch off and back on and start it an


Hi Parker1973, and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discharged.
6. Damaged wire or loose connections at battery terminals especially the ground cable at BOTH ends, ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. Water or dirt in fuel system, carburetor or filter.
9. Fuel tank vent system plugged or carburetor vent line closed off.
10. Carburetor controls misadjusted.
11. Damaged carburetor or intake seals.
12. Loose or dirty ignition module connector at crankcase.
13. Faulty MAP, CKP, and or CMP sensors.
14. Incorrect valve timing.
15. Weak or broken valve springs.
16. Damage intake or exhaust valve.
For a prime suspect please visit website below and good luck:
Big Twin Carb EFI DTC Intructions codes Harley Davidson Forums Harley...

Mar 11, 2012 | 2001 Harley Davidson FLHTCUI Electra Glide...

1 Answer

2008 ultra sometimes no spark no power to the powercomander also intermittant backfires while rideing. cycleing the key helps to get it going


Hi Stanchinarac, and the usual suspects are:
1. Severely discharged or damaged battery.
2. Loose, corroded or broken battery cable.
3. Alternator not charging or below normal rates.
4. Failed ignition coil, ignition/electronic module.
5. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor.
6. Faulty ignition switch.
7. Water or dirt in fuel system, carburetor or filter.
8. Fuel tank vent system plugged or gas cap not venting.
9. Fuel tank empty.
10. Fuel valve vacuum line broken or carburator vent line closed off.
11. Restricted, blocked or kinked fuel line.
12. Failed fuel pump, pressure regulator and or fuel injectors.
For a prime suspect please visit website below. Good luck and have nice day. Harley Diagnostic Codes 04 to Present

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