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Flushing out lines after a fuel system failure?

Hobby_Man22

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Nov 16, 2020
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tx
I'd like to install a new lift pump and some better two micron filters. This engine block mounted filter is a pain to get to. I'd like to buy a fleece powerflo and then i already have the filter head that you would mount on the frame. I will leave the block mounted filter in place, then just never bother to change it and only change the two on the frame. My question is if I have a injector or cp3 pump failure, they won't have to replace all the lift pump if its new will they? They can just flush all the lines out and of course all new filters, right? Opinions? Block mounted filter pictured just for giggles, and before you tell me its too dirty it always looks like that. Gets change about every 500hrs. Vehicle is a 2007.5 6.7 cummins 2500 dodge pickup. 12,000hrs and 243,000 miles original cp3, lift pump and fuel injectors
 

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cannuck

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Nov 30, 2021
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This has been a big issue in the earlier HPCR VW diesels. VW always replaced everything as it was cheaper than a warranty claim on the repaired vehicle after HP pump failure. I like your suggestion to filter ahead of the OEM filter - I have used that strategy on many vehicles and genets. Provides a guard filter for any contamination that might occur during filter change. I would ask this question on some of the Ram Cummins forums to see what others with your system have done.
 
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Hobby_Man22

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This has been a big issue in the earlier HPCR VW diesels. VW always replaced everything as it was cheaper than a warranty claim on the repaired vehicle after HP pump failure. I like your suggestion to filter ahead of the OEM filter - I have used that strategy on many vehicles and genets. Provides a guard filter for any contamination that might occur during filter change. I would ask this question on some of the Ram Cummins forums to see what others with your system have done.
Plenty of knowledgeable people on this site too.
 
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BillK

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Aug 24, 2006
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Beautiful Southern Maryland
My feelings are that if the original setup went 18 years and 230K miles without being an issue, I would leave it the way it is. I dont like changing things that are working good.

I certainly would not leave the block mounted filter in place if you never plan to change it. Thats just asking for trouble.
 
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Hobby_Man22

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My feelings are that if the original setup went 18 years and 230K miles without being an issue, I would leave it the way it is. I dont like changing things that are working good.

I certainly would not leave the block mounted filter in place if you never plan to change it. Thats just asking for trouble.
You keep the wif sensor and fuel heater in place by leaving the block mounted filter. The block mounted filter will still get changed, but the maybe every 3rd filter change. The 2 micron filter heads filter way more than the stock factory filter ever would.
 
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