FAQ

Possible engine causes/Check to perform or Possible carburetor causes...Floods?

• Incorrect fuel pressure • Float level incorret • Trash in the needle and seat.

Possible engine causes/Check to perform or Possible carburetor causes...Hard Start-Cold?

• Vacuum leak or improper connections • Faulty ignition wires or plugs • Incorrect choke setting faulty choke • Sticky EGR valve • Improper float level • Clogged or dirty fuel filter • Moisture in distributor cap • Improper ignition timing • Low fuel in gas tank • Binding or sticking choke • No fuel in carburetor • Engine or carburetor flooded • Defective accelerator pump.

Possible engine causes/Check to perform or Possible carburetor causes...Hard Start-Hot?

• Vacuum leak or improper connections • Faulty ignition wires or plugs • Carburetor flooding • Weak battery or starter • Engine overheating • Improper ignition timing • Incorrect choke setting faulty choke • Improper float level • Clogged or dirty fuel filter • Binding or sticking choke • No fuel in carburetor • Engine or carburetor flooded • Leaking float bowl • Fuel percolation • Vapor lock.

Possible engine causes/Check to perform or Possible carburetor causes...Hesitation Sag, Stumble?

• Fuel contamination/Old Gas • Improper ignition timing • Improper alternator voltage output • Improper EGR valve operation • Incorrect accelerator pump short • Defective accelerator pump • Incorrect accelerator pump nozzle • Fuel level too low • Carburetor loose on manifold/Vacuum leak • Incorrect power valve • Secondaries opening too soon.

Possible engine causes/Check to perform or Possible carburetor causes...Backfires

• Faulty EGR va • Bad ignition coil • Fouled spark plugs or spark plug wires • Improper ignition timing • Valve timing off • Valve train parts-broken or worn • Binding or sticking choke • Accelerator pump not operation properly • clogged air or fuel filter • Restricted bowl vents • Vacuum leaks.

Possible engine causes/Check to perform or Possible carburetor causes...Cuts out, Misses?

• Faulty spark plugs or spark plug wires • Faulty ignition coil • Restricted fuel filter or contamination fuel • Low fuel pressure • Low compression • Bad distributor cap or rotor • Valve train parts-broken or worn • Dirty or plugged fuel inlet • Contamination in fuel/Old Gas • Faulty power valve • Restricted fuel bowl vents • Improper fuel pressure • Incorrect jetting.

Possible engine causes/Check to perform or Possible carburetor causes...Lack of power, Sluggish, or Spongy?

• Air filter dirty or plugged • Improper ignition timing • Restricted fuel filter • Improper EGR valve timing • Low compression • Restricted exhaust • Throttle not opening all the way • Dirty or plugged fuel inlet • Faulty or incorret power valve • Float level too low • Float or needle and seat sticking • Incorrect or plugged main jets • Secondaries not opening correctly.