COMPLAINT: Full Power and High Speed Difficulties
Poor performance in entire range from slow cruising speeds to top speed. Economy may also be affected.
Poor performance at high rpm and spitting and coughing. Can be overcome by pulling out choke slightly.
Poor performance under high loads at normal cruising speeds is well as reduced top speed.
COMPLAINT: Poor Fuel Economy
High fuel consumption due to rich mixtures. In extreme cases, fouled spark plugs may result.
Mixture too rich or too lean, possibly resulting in sluggish operation.
POSSIBLE CAUSE
Economizer stem binding or power valve clogged or damaged.
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CARBURETOR MODELS 885-FF & 885-FFG
CORRECTION
Remove main jets and inspectfor foreign matter and proper size stamped on side. Never attempt to gauge or clean j e t orifice with wire gauge, drill or similar object. Replace damaged or improper main jets with authorized Holley replacement parts. Crank engine (ignition "off") with air horn removed to fill float chamber. Check for specified fuel level and re-set floats if necessary. See "R e a s s e m b l y" section of this manual.
Remove the nozzle bars and check that the "anti-perk" screens are not blocked, also install a good gas filter.
Check economizer stem for freedom of movement and damaged parts. Check power valve for cleanliness, proper operation, and correct size stamped on valve body.
Inspect air bleeds for cleanliness and correct size. Inspect main well tubes and replace damaged tubes with authorized Holley replacement parts. Crank engine (ignition "off") with airhorn removed to fill float chamber. Check for specified fuel level and re-set floats if necessary. See "Reassembly" procedure in this manual.
Remove main jets and inspect for proper size stamped on jet. Never use wire gauge to check jet orifice. Replace damaged or improper size main jets with authorized Holley replacement main jets of the °_^acified size. Too small a main jet will also adversely affect fuel economy.
