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General Discussion
12 Valve Cummins Isues
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<blockquote data-quote="jayphizzle" data-source="post: 507451" data-attributes="member: 2032"><p>I'd put my money on a fuel issue. Either a boost reference leak to the AFC or a fuel pressure issue. In stock form, those engines will smoke under a load regardless. The overheating issue is what concerns me, do a bit of research on this if you do not believe me. Dodge put radiators in those trucks based off of the engine GVWR, not the truck GVWR. Thus having a greatly oversized radiator. The temperature gauge will vary greatly when the thermostat opens. They remedied this problem in 98 with a slower reacting gauge assembly. All that being said, its hard to imagine your truck overheating with all that cooling capacity. Your problem may be related to the overheating. As long as you have 20 or so psi to your injector pump and you are building boost, you should have plenty of power at the flexplate. Although I build 30-35 psi of boost at full throttle loaded on mine, its got to be lack of fuel. Running an engine lean=overheating. Do you know what your EGT's are running?</p></blockquote><p></p>
[QUOTE="jayphizzle, post: 507451, member: 2032"] I'd put my money on a fuel issue. Either a boost reference leak to the AFC or a fuel pressure issue. In stock form, those engines will smoke under a load regardless. The overheating issue is what concerns me, do a bit of research on this if you do not believe me. Dodge put radiators in those trucks based off of the engine GVWR, not the truck GVWR. Thus having a greatly oversized radiator. The temperature gauge will vary greatly when the thermostat opens. They remedied this problem in 98 with a slower reacting gauge assembly. All that being said, its hard to imagine your truck overheating with all that cooling capacity. Your problem may be related to the overheating. As long as you have 20 or so psi to your injector pump and you are building boost, you should have plenty of power at the flexplate. Although I build 30-35 psi of boost at full throttle loaded on mine, its got to be lack of fuel. Running an engine lean=overheating. Do you know what your EGT's are running? [/QUOTE]
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