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Wayne
Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 8429
Experience:  worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
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I have a 1998 International Harvester tandem dump truck. Why

Customer Question

I have a 1998 International Harvester tandem dump truck. Why when I refuel the driver side tank the fuel gets transferred to the passenger side tank?
If I keep putting fuel in the driver's side tank will the passenger side tank overflow?
The fuel check valve in the tank operates so fuel does not get splashed out when fuel sloshing around in the tank...
Submitted: 3 months ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 3 months ago.

Hi I'm Wayne

I will help you with this

that is normal, self leveling tanks

no as long as the check valve is working , it will not over flow

To verify this, fill driver side 3/4 full the passenger side should be same or bit higher

I hope this helped you

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Customer: replied 3 months ago.
My driver side tank was over three-quarters full now the passenger side tank is full up to the bottom of the fill neck. At what point is the passenger side fuel tank supposed to stop filling up???
Customer: replied 3 months ago.
I blew through the fuel lines on the passenger side tank and I could hear bubbles coming up on the driver side fuel tank
Expert:  Wayne replied 3 months ago.

Hi

It stops when equal or bit more

if it keeps filling , it has a faulty balance valve