2500 max rpm - Page 4 - Dodge Cummins Diesel Forum
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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post #37 of 38 (permalink) Old 05-19-2019, 07:49 PM
The Uppity 12v Guy
 
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It's surely possible. The checks looked and felt like a bog standard 75-ish durometer Buna-N which would not be the best choice for use with bio. The inlet check was in perfect shape though, so I was left with the assumption there was a chemical defect in the one that caused it to fail.

A company like Cummins could easily have pistons supplied by one place, outlet fittings supplied by another, castings supplied by yet another, then carry out assembly at a separate location. If that is the case, and each manufacturer is on their own for sourcing materials (not an uncommon practice in China), it'd be a near certainty that the two check valves aren't coming from the same molding plant.


'95 2500 ECLB 4x4, 334k and paused due to epic transformation in progress.
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post #38 of 38 (permalink) Old 06-10-2019, 12:00 AM
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Change your fuel filter, check for plugged fuel heater, before you waste money on a new lift pump.

1994 single cab 4x4 2500 auto, black linex premium covering entire truck, rear frame blasted and por15'd, Firestone airbags, 35" good years, 3/4" spacers, longer rear wheel studs.
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