4.7 - head gasket or ????

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Bunga

Junior Member
Joined
Oct 27, 2023
Posts
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Location
Athabasca alberta Canada
Ram Year
1089/2003
Engine
318/4.7
220,000k
Exhaust red hot. After cat. Standard transmission. Won’t rev past 3000 rpm while in gear. Will in neutral and with clutch pushed in. Took exhaust off at Y-pipe and ran off manifolds- no change. No codes right now. New plugs. All plugs black. Makes me think running rich. Garage said head gasket. Coolant level hasn’t dropped. No coolant in oil. Truck not running for a few days and slight pressure in expansion chamber. When removing rad cap. I don’t know if it’s head gasket or over fuelling maybe ? Fuel pressure with key on exactly 40 psi. While running it’s between 42/48 psi. If I had an injector stuck open or over injecting would I get a code on dash?
Anyone ever experience anything like this?
 

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