constant exaust backfire
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1st Gear
Joined: Apr 2007
Posts: 5
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constant exaust backfire
What are the possible causes of constant exaust backfire? I have rebuilt the carb 3 times and it is so spanking clean I don't belive that to be the problem. I changed the compliance fitting the last time I rebuilt the carb and I get a great smooth idle but a constant back fire from the front exaust. The bike is a 1988 fxst with a stock carb and milwaukee twins exaust. I really need to get this bike running again and can't afford to put more money into it and before I tear it down againI'd really like a clue as to what I'm looking for.
Road Captain
Joined: Feb 2007
Posts: 551
Likes: 2
From: Fort Bragg, NC
RE: constant exaust backfire
might sound stupid but check your plugs. If I leave my enrichner out too llong in the morning, I pop all the way out my driveway like Uncle Buck, then i pul the plugs and clean em off and Im all good.
Intermediate
Joined: Apr 2007
Posts: 29
Likes: 0
RE: constant exaust backfire
backfire causes
1) fouled plugs (most common)
2) bad spark plug
3) bad spark plug wires
4) bad coil
5) bad ignition module
6) dead battery combined with a pooched charging system
7) bad gas (water or just old)
8) engine timing
9) electrical wire short
1) fouled plugs (most common)
2) bad spark plug
3) bad spark plug wires
4) bad coil
5) bad ignition module
6) dead battery combined with a pooched charging system
7) bad gas (water or just old)
8) engine timing
9) electrical wire short
Thread Starter
|
1st Gear
Joined: Apr 2007
Posts: 5
Likes: 0
RE: constant exaust backfire
Oh My GAWD!!!!
My old hog runs good again!!!!!!!
Way too many thanks guys.
It was the plugs and I'm an old biker again!
Thank you
Thank you
Thank you
now I just gotta sober up so I can ride the machine again.
My old hog runs good again!!!!!!!
Way too many thanks guys.
It was the plugs and I'm an old biker again!
Thank you
Thank you
Thank you
now I just gotta sober up so I can ride the machine again.
Trending Topics
backfire causes
1) fouled plugs (most common)
2) bad spark plug
3) bad spark plug wires
4) bad coil
5) bad ignition module
6) dead battery combined with a pooched charging system
7) bad gas (water or just old)
8) engine timing
9) electrical wire short
1) fouled plugs (most common)
2) bad spark plug
3) bad spark plug wires
4) bad coil
5) bad ignition module
6) dead battery combined with a pooched charging system
7) bad gas (water or just old)
8) engine timing
9) electrical wire short
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Road Master
Joined: Sep 2013
Posts: 1,054
Likes: 441
From: Tejas
The ten year plus reply above your post is a good place to start..
backfire causes
1) fouled plugs (most common)
2) bad spark plug
3) bad spark plug wires
4) bad coil
5) bad ignition module
6) dead battery combined with a pooched charging system
7) bad gas (water or just old)
8) engine timing
9) electrical wire short
Griz
backfire causes
1) fouled plugs (most common)
2) bad spark plug
3) bad spark plug wires
4) bad coil
5) bad ignition module
6) dead battery combined with a pooched charging system
7) bad gas (water or just old)
8) engine timing
9) electrical wire short
Griz
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