Question about Harley Davidson FXSTB Night Train Motorcycles

1 Answer

When cold, engin starts and back-fires some times. exhaust is running cherry red when at idle. Smokes black when first ran.

Posted by on

  • t_rooter Jan 01, 2011

    the back cylinder running hotter than front. its a 96 ci. on a 09 night train.



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 8,909 Answers

It sounds like it is getting too much fuel and is burning when it leaves the pistons. Do both exhausts glow or just the fron one?
Is the ignition timing within spec.?
Without model it could be anything from exhaust valve stuck open to injector problems.
Ride safe.

Posted on Dec 31, 2010

  • specialistel Jan 02, 2011

    Nice bike!
    The rear runs hotter than the front normally as the rear is heated up by the front due to them being inline. Buell got over the problem by using a blower on the rear barrel.
    I have a mate of mine who runs a Harley workshop on the south coast, he is back at work Tuesday. I shall give him a call but I reckon finned exhaust clamps will do the trick. I wouldn't like to de-tune it just for that!
    Regards and I'll get back to you when I get a result.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a 1995 GMC sierra truck smoke when it stop at red light.

It probably smokes all the time , when moving you don't notice it > What color smoke ? White - coolant is getting in to the combustion camber , head gasket , intake manifold . Blue - oil is being burnt - rings , valve seals , Black - running rich , leaking fuel injectors . leaking fuel pressure regulator . Smokes from were , exhaust ? Engine bay etc....

May 01, 2016 | 1995 GMC Sierra C1500

1 Answer

Replace timing belts crank sensor runs rough at idle an exaust gets cherry red

This could be several things. One is obstructed CAT. The most common cause though is the engine is running so rich it is dumping unburned fuel into the exhaust. This could be a bad injector sticking exhaust valve, constant misfire etc. Don't run it like this or you will end up with a pile of charcoal and steel where your car is supposed to be.

Oct 07, 2015 | 2001 Kia Optima

1 Answer

Runs good at first then drops off and keeps getting worst. Exhaust manifold got cherry red

Check for the timing and re-adjust valve clearance...waht kind of engine you have...

Sep 12, 2012 | 2001 Honda Civic

1 Answer


Your carb is out of adjustment for the high and low idle circuits. Turn both in until soft seated and back out 1.5 turns. This is a good starting point for fine adjusting, may work good from this location. There should be a mark on carb indication which one is which.

Jul 13, 2011 | Craftsman 20 Hp 42" Deck Lawn Tractor

1 Answer

When warm runs rough sets knock sensor code will hardly idle turn front cat cherry red car sat for a year put new gas in it when cold runs great

If the cat is cherry red as you say it is I would check the firing order or timing they may have crossed plug wires this will cause the exhaust manifolds to get red hot and glow let me know if this heled you and good luck.It definitely sound to be timing related or crossed wires.

Feb 09, 2011 | 1999 Mercury Villager

1 Answer

Mower backfires smokes and then won't start

check the valves. if the flywheel bolt is tight it shouldn't shear the key. i wouldn't run it with out the covers on. it will over heat and make the exhaust glow as you said.

Mar 17, 2017 | Mtd Garden

1 Answer

99 Expedition, runs rough, won't idle, no power.

it could be two things a bad injector or a the intake gaskets are leaking

Apr 01, 2009 | 1999 Ford Expedition

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

240 people viewed this question

Ask a Question

Usually answered in minutes!

Top Harley Davidson Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4898 Answers


Level 3 Expert

4349 Answers


Level 3 Expert

79851 Answers

Are you a Harley Davidson Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides