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Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

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I've got a 02 LB7 and me and a buddy are replacing the CP3 pump and noticed that the fuel junction block had some rust/pitting inside the part with the plunger and spring. We were told it needed to be replaced and just wanted to ... JOIN NOW TO REMOVE TRACER

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Old 03-15-2013, 09:15 AM
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Default LB7 Fuel Junction Block need help ASAP!!

I've got a 02 LB7 and me and a buddy are replacing the CP3 pump and noticed that the fuel junction block had some rust/pitting inside the part with the plunger and spring. We were told it needed to be replaced and just wanted to make sure before we dropped the $1100 they wanted for it. Any help would be appreciated!!
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Old 03-15-2013, 09:27 AM
tiremann9669's Avatar
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Don't know anything about it but I sure wouldn't go on the advice of the guy sellin the parts

tiremann9669's Sig: 96 12 valve Club Cab 4X4, K&N Intake,4'' Straight Pipe, 285/75R16 Bridgestone Revo's,on 16X8 American Racing Black steelies, Firestone ride rite airbags Future Bombs Guages, Aftermarket lift pump, Fuel plate, Injectors,etc,etc,etc Oh Yea I'm sure a clutch will come into the picture sometime too
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Old 03-15-2013, 09:35 AM
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you talking about the block that has the fuel pressure relief valve andfuel pressure sensor in it?
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Old 03-15-2013, 11:24 AM
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Yessiirr. Its got the alan head plug inside one end that screws out and it's got a spring and plunger with two holes in the end of it that seats inside the valve or whatever it is. It had a bunch of trash in it and a little rust. Didn't know what purpose it served or if I needed to completely replace the entire block and regulator. Was going to get a new press reg either way. Just never heard of anyone replacing it before and it costs more than the damn CP3 pump. Thanks man
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