8
Chapter 4
POSSIBLE GASOLINE FUEL PROBLEMS/
SOLUTIONS
1. Engines are 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, fi ttings and fi lters for
tightness. Check the entire system for fuel leaks.
2. The engines hesitate at intermediate speeds or fail
to obtain top rpm- Check the fuel system for possible
leaks, clogged fuel fi lters and/or malfunctioning anti-
siphon valve.
3. The fuel tank reads low and the engines are 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 fi ll fi tting and fi 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 momentarly
with the key on the dash guage 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 irratically.
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