Fuel Pump
Page 3A-8 90-8M0050731 MAY 2011
Problem: Air bubbles in the fuel line
Fuel vaporizing.
Fuel with high reed vapor pressure (winter grade fuel) may vaporize (form bubbles)
when used in hot/warm weather. Use fuel with a lower reed vapor pressure
(summer grade fuel).
Problem: Lack of fuel pump pressure
An anti‑siphon valve.
Refer to Anti-Siphon Valves.
Air in fuel line.
Refer to Air Bubbles in the Fuel Line.
A dirty or clogged fuel filter. Replace fuel filter.
The fuel pickup in fuel tank is clogged or dirty. Clean or replace pickup.
Fuel hose internal diameter too small. Use 5/16 I.D. fuel hose.
Excessive fuel lift required. Fuel lift exceeds 2.5 in. of vacuum (mercury).
Problem: No fuel flow
Blown fuse. Check the 3 amp fuse.
Low or no voltage at harness connection. Check for loose, corroded, or damaged wires or connections.
12 volts present and pump is not running. Replace the fuel lift pump.
12 volts present and pump is running. Inspect fuel hose connection, pinched fuel hose, or stuck anti‑siphon valve.
Fuel Lift Pump Removal/Inspection/Installation
Removal
1. Disconnect the fuel pump harness connector.
2. Disconnect the fuel hose from the fuel filter.
3. Use sharp side cutter or end cutter to peel back end of the crimp hose clamp securing vapor separator hose. Remove hose
from fuel pump.
To Next Page
Loading...
Need help?
General
