Members Birthdays
|
|
Main Menu
|
|
30th July 2012
|
|
Biker
|
|
Join Date: Sep 2008
Posts: 5 Sportster/Buell Model: XLH Sportster/Buell Year: 1973
Reputation: 10
|
|
Runs Poor
Help I have a 73 xlh at steady speeds only it lugs like a miss.
and after 50 miles or so the rear spark plug won,t fire.
but if i pull the plug wire off about 1/2 inch it will fire.
New Coil ,Plug wires ,spark plug, points and condenser.
Replaced Points and condenser ingiton system witl Mallory E-Spark Ingition system.
Rebuilt Carb.Bendex Tryed all the jets for Carb.
Ck Compresion 120psi after 4 strokes.
Did cylinder leakage test .Rear cylinder Exhaust valve slight leak
Had valve job both heads. Still have same problem.
Any advice would be aperciated.
Thanks 73 sporte
|
30th July 2012
|
 |
Custom Bike Builder
|
|
Join Date: Oct 2010
Posts: 2,273 Sportster/Buell Model: xls roadster Sportster/Buell Year: 1982
|
|
Quote:
Originally Posted by 73Sporte
Help I have a 73 xlh at steady speeds only it lugs like a miss.
and after 50 miles or so the rear spark plug won,t fire.
but if i pull the plug wire off about 1/2 inch it will fire.
New Coil ,Plug wires ,spark plug, points and condenser.
Replaced Points and condenser ingiton system witl Mallory E-Spark Ingition system.
Rebuilt Carb.Bendex Tryed all the jets for Carb.
Ck Compresion 120psi after 4 strokes.
Did cylinder leakage test .Rear cylinder Exhaust valve slight leak
Had valve job both heads. Still have same problem.
Any advice would be aperciated.
Thanks 73 sporte
|
check the push rod adjustment , run a compression test with the bike fully warmed up like after a ride . Nikki
__________________
the difficult can be done immediatey the impossible takes a little longer
|
30th July 2012
|
 |
Master Mechanic
|
|
Join Date: Nov 2011
Posts: 259 Sportster/Buell Model: XLSa Sportster/Buell Year: 82 Sportster/Buell Model #2: FLHTC Sportster/Buell Year #2: 1987
|
|
Sounds to me all the symptoms of running rich, then eventually fouling a plug.
Over jetted posibly. When I was still running my Bendix, my idle tube was flooding the engine. I couldnt do much with it so I converted to a CV. Look at your tube running verticle from the air cleaner side while its running. See if you see fuel dripping from around the top of this tube.
|
30th July 2012
|
 |
Harley Engineer
|
|
Join Date: Aug 2008
Posts: 310 Sportster/Buell Model: XLH Sportster/Buell Year: 1981 Other Motorcycle Model: Various
Reputation: 88
|
|
I'll go with running rich. When you pull the plug is it a nice light tan or a sooty black?
__________________
Still crazy after all these years
|
30th July 2012
|
 |
Senior Chief Know It All
|
|
Join Date: Mar 2011
Location: State Side
Posts: 810 Sportster/Buell Model: XLCH Sportster/Buell Year: 1974 Other Motorcycle Model: 1999 FLHTCUI
|
|
Quote:
Originally Posted by 73Sporte
after 50 miles or so the rear spark plug won,t fire.
but if i pull the plug wire off about 1/2 inch it will fire.
New Coil ,Plug wires ,spark plug, points and condenser.
Replaced Points and condenser ingiton system witl Mallory E-Spark Ingition system.
|
Are you using compatible coil, wires, and plugs. Certain type of this, does not work with certain type of that.
Beyond that, and I would verify the ignition first, I had a similar problem and like already mentioned, the carb was way too rich. |
30th July 2012
|
 |
Senior Chief Master Mechanic 1st Class
|
|
Join Date: Dec 2009
Location: Neither here nor there
Posts: 1,285 Sportster/Buell Model: XLCH (mongrel) Sportster/Buell Year: 1972
|
|
Mixtures that are too lean don't fire good.
50 miles is about one gallon of gas. Do you have an extra filter in the gas line? The tank level drops and not enough pressure to push gas through the extra filter. Take the filter out of the line.
Or, possibly clogged gas tank vent. Next time it happens, just twist the cap open enough to let air in.
You could ruin your electronic ignition pulling that wire off the plug.
__________________
BBRRAPPPP-snick-BRRAAAPPPP-snick-BBRRAAAPPPPP-snick-BBRAAAPPPPPP...
|
1st August 2012
|
|
Biker
|
|
Join Date: Sep 2008
Posts: 5 Sportster/Buell Model: XLH Sportster/Buell Year: 1973
Reputation: 10
|
|
Thanks for the suggestions I will check the out .And let you know.
Thanks 73sporte
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
|
| Thread Tools |
|
|
| Display Modes |
 Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT +1. The time now is 09:28.
|
