my sftl twin cam backfired & now won't start
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Stage I
Joined: Sep 2015
Posts: 1
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From: Big Island Hawaii
my sftl twin cam backfired & now won't start
my '06 softail backfires on startup sometimes, this last time it made a loud pop
then, ran like it was running on 1 cylndr. after changing plugs & intake seals, it has spark 2 the plugs. It turns over staters fine -just won't kick or fire. chckd module, coil, fuses, carb is fine. Don't know what else 2 do. Anybody had the same experience or ideas 2 fix this problem?
then, ran like it was running on 1 cylndr. after changing plugs & intake seals, it has spark 2 the plugs. It turns over staters fine -just won't kick or fire. chckd module, coil, fuses, carb is fine. Don't know what else 2 do. Anybody had the same experience or ideas 2 fix this problem?
Seasoned HDF Member
Joined: Jan 2010
Posts: 7,379
Likes: 3,347
From: usa
Do you have spark at each plug ?
Are you getting gas to the cylinders?
When you turn the start switch to on do you hear a short hissing sound for 3to 5 sec.?
Did you check for a loose battery cable ?
Loose intake manafold clamp carb to motor ?
Could also be bad gas .
Are you getting gas to the cylinders?
When you turn the start switch to on do you hear a short hissing sound for 3to 5 sec.?
Did you check for a loose battery cable ?
Loose intake manafold clamp carb to motor ?
Could also be bad gas .
Last edited by Iron lHorse; Sep 5, 2015 at 05:50 AM.
Road Captain
Joined: Sep 2005
Posts: 725
Likes: 33
From: East, TN
Do you have spark at each plug ?
Are you getting gas to the cylinders?
When you turn the start switch to on do you hear a short hissing sound for 3to 5 sec.?
Did you check for a loose battery cable ?
Loose intake manafold clamp carb to motor ?
Could also be bad gas .
Are you getting gas to the cylinders?
When you turn the start switch to on do you hear a short hissing sound for 3to 5 sec.?
Did you check for a loose battery cable ?
Loose intake manafold clamp carb to motor ?
Could also be bad gas .
Club Member
Joined: Mar 2009
Posts: 66,106
Likes: 51,387
From: Niles Canyon Ca.
BIke needs 3 things to start , gas so make sure it's getting to and through the carb, spark so check the plug wires and plug gaps again, last is compression and while your at it maybe try the kill switch, not joking there you'd be very surprised how often that happens.
It has those there's no reason it shouldn't at least try to fire.
It has those there's no reason it shouldn't at least try to fire.
Road Warrior
Joined: Sep 2006
Posts: 1,570
Likes: 45
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Cruiser
Joined: Oct 2012
Posts: 176
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From: saugerties n.y.
when i took mine otta storage it would only crank over. thanks to all the help here i replaced the crank sensor and she fired right up. thanks men.
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