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1986 Ford F150 Custom Reg Cab

1986 Ford F150
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December 19, 2009, 8:21 pm


Question: melting thermactor valve

i replaced all the vacuum hoses and thermactor valve, but when i drive the truck, they all melt.

December 22, 2009, 8:12 pm

Expert Mechanic

Check your exhaust check valves. There should be three. One of them is leaking exhaust back into the thermactor.

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