Daveinbuffalo Posted October 5, 2017 Share Posted October 5, 2017 Help. I have a 1996 ch613 Mack. I had a problem with the fuel. I believe it was contaminated. I drained tanks, filters, cleaned tanks, dried tanks, and then put new fuel in. The truck ran Great. Yesterday, I started the truck and she stalled. The drivers tank was dry! Seems like the return line may be plugged???. Since it is only a yard truck, how do I block off that tank so I just use the passenger tank? Any suggestions please and thank you Quote Link to comment https://www.bigmacktrucks.com/topic/51281-fuel-leveling-problem/ Share on other sites More sharing options...
Mack Technician Posted October 5, 2017 Share Posted October 5, 2017 Dual draw dual return are a pain. Replace or disable the 3 way fuel union. Draw and return fuel from only one tank. Run a 3/8" or bigger low level crossover line (equalizing) between the two tanks, typically supported by a steel member bolted between tanks. Install emergency shut-offs at both low level fittings in case road debris rips it off. Good luck! 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/51281-fuel-leveling-problem/#findComment-381702 Share on other sites More sharing options...
keg1 Posted October 6, 2017 Share Posted October 6, 2017 I had that problem with my Ch it was the vent in the fuel cap. Loosened cap and checked later and they were evened out Quote Link to comment https://www.bigmacktrucks.com/topic/51281-fuel-leveling-problem/#findComment-381779 Share on other sites More sharing options...
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