59
Systems
POSSIBLE GASOLINE FUEL PROBLEMS/
SOLUTIONS
1. Engine is hard to start or idle rough-
This problem can be caused by foreign
particles or water in the fuel system or a
blockage in the fuel supply which causes
a lean condition.
Check all fuel system lines, clamps, ttings and lters for
tightness. Check the entire system for fuel leaks.
2. The engine hesitates at intermediate speeds or fail
to obtain top rpm- Check the fuel system for possible
leaks, clogged fuel lters and/or malfunctioning anti-
siphon valve.
3. The fuel tank reads low and the engine is running
rough. The pick-up tube has possibly picked up some
residual water from the bottom of the fuel tank.
Pour dry gas into the fuel ll tting and ll the gas tank
with fresh fuel. Test run the engines to purge impurities
from the fuel system.
4. Fuel tank gauge not reading correctly/or not at all-
If you disconnect the fuel tank sending wire leading to the
dash gauge at the sending unit and ground it momentarily
with the key “on” the dash gauge should show full. Release
the wire from the ground position and the gauge should
show empty. Normally this would indicate the dash gauge
is working properly. The next item to check would be the
fuel sender ohms reading which is explained earlier in this
section. Also, make sure the sender wires and ground are
securely fastened and the ground wire is tight. Many times
a loose ground wire will cause a malfunctioning dash gas
gauge or the gauge needle moves erratic.
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