09 STARV1100 CLASSIC EXAUST POPS AND BANGS ON ENGINE BRAKEING

SOURCE: 1995 Saab 900 SE Convertible 2.5L V6 runs rough

Most likely air flow metre. Had same problem analysed and replaced and runs perfectly. Not cheap!

SOURCE: 1984 cbx750f tries to start, but wont start up,just loud bangs

Hi and welcome to FixYa,

A couple of initial checks:

• determine if there is spark on all four sparkplugs. Remove them and re-connect the sparkplug wires. Lay them atop any metal and start the bike.  There should be spark on all four. Determine hw strong (color) of the sparks;
  
• verify that fuel is reaching the bowls of the carbs.  At the bottom of each carb, there is a drain screw.  Loosening these screws would allow the fuel to drain out.  Normally, there are drain hoses for this purpose. Collect the draining fuel and check for contamination (dirt, sand, rust, water);
  
• verify that the wires from the left ignition coil goes to cylinders 1 & 4 while the right ignition coil goes to cyliners 2 & 3.
  

Rod Wallberg

• 494 Answers
• Posted on Feb 21, 2010

SOURCE: 2006 Dodge Gr. Caravan. Loud humming noise upon

Misalignment of the belt, incorrect belt, worn or loose tensioner, Too tight of an adjustment (many service centers do this on purpose so when the belt breaks in it becomes properly adjusted, I do not believe in this philosophy), The belt is actually one long belt called a serpentine belt.....

SOURCE: backfiring on deceleration from exhaust pipes

May be running too lean or too rich. Check the color of your plugs, black dry and sooty means they are rich, white with blisters lean.

SOURCE: vt1100c2 backfires through pipes on deceleration -

Could be running too lean, check the color of your plugs to know for sure, black and dry is rich white and blistered is lean.,