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Go Back   Dodge Cummins Diesel Forum > 2nd Gen. Dodge Cummins 94-98 12V Forums > 94-98 Powertrain
94-98 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

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Old 09-17-2010, 08:58 PM   #1 (permalink)
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overflow valve and governor springs

what kind of syptoms do these have when they go bad or a governor breaks.. my truck is still popping and cracking and burning raw diesel fuel at 2200 rpm and beyond ONLY at WOT i can have it half throttle and it runs fine..i can also just drive it easy and it runs just fine..what i have done so far is advanced timing incase it slipped, that did not help,lift pump and took out fuel heater..any ideas would be nice i am needin my truck to work it
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Old 09-17-2010, 09:01 PM   #2 (permalink)
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and if it is the overflow valve where can i get a racing app one that is wht my buddy who works at a performance shop is telling me it could possibly be and to try next but i want more opnions cause i am tight on money
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Old 09-17-2010, 09:05 PM   #3 (permalink)
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Just s stock OFV would work fine you can get them from pure diesel power. If you want something more you can look at the Tork Tek adjustable one.

Overflow valve kit 94-98 12 Valve Cummins

TORK TEK CUMMINS ADJUSTABLE OVERFLOW VALVE OFV030 - Tork Teknology
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Old 09-18-2010, 06:10 AM   #4 (permalink)
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Have you done any type of diagnosing, like fuel pressure? If timing is correct and fuel pressure is where it needs to be, then that doesn't leave much. First of all you gotta know what the fuel pressure is. You should have checked fuel pressure prior to lift pump. That could have saved you some dollars.
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Old 09-18-2010, 08:04 PM   #5 (permalink)
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We just installed the Tork Tek overflow. It corrected the idle and we can feel it is more stable on acceleration.
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Old 09-19-2010, 03:03 AM   #6 (permalink)
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I have the Tork valve, it's good stuff, but it's also cheaper than the one listed on Pure Diesel's website. There used to be a good link for a $36 or $39 (can't remember) one on eBay that was a direct replacement, so I'd say either go with that one or spend $10 more for the upgraded Tork

Keep in mind, depending on if you run Veggie Oil or have an aftermarket fuel pump, you may need a different part number, check the Tork website for details...
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Old 09-19-2010, 04:12 AM   #7 (permalink)
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If it were governor springs you would have revving issues, high idle, not idling down - free revving, so you could probably rule that out.
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Old 09-19-2010, 05:03 AM   #8 (permalink)
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x2, you definitely know when its a gov issue. the gov is basically what makes the engine run. if it is malfunctioning in anyway, the engine is either not going to run at all, or the engine is going to run away and spill its guts on your driveway.

Your symptoms sound 99% like a fuel supply problem (low pressure, or air in the lines)
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