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Engine running rough all the time

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Old Apr 9, 2009 | 02:23 PM
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bigralso
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Engine running rough all the time

2001 F-150 XL 7700 Bi-Fuel 5.4 Triton. While filling it up with propane the auto shut off did not work and I put about 40 liters more in the tank. Most likely over the 100 per cent full. Have got the tank back to correct levels. Was running fine until the overfill, now idles rough on gas or propane and bucks under load. Have shut off the propane feed and it still is rough on gas. There are no codes coming up.there is 110,000 kms on the engine .
 
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