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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
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I've received a bunch of advice and help on here already about my issue but there's still something I don't understand.
2008 F-450 High Pressure Pump Failure.
Shavings in filter
All the quotes I've got are for changing pump , cleaning fuel rails and lines etc, plus injectors.
Why do the injectors need to be changed, why cant they be cleaned up and reused?
I'm not a mechanic but why not change pump , clean and wash everything else , change filters more often than required for awhile?
2008 F-450 High Pressure Pump Failure.
Shavings in filter
All the quotes I've got are for changing pump , cleaning fuel rails and lines etc, plus injectors.
Why do the injectors need to be changed, why cant they be cleaned up and reused?
I'm not a mechanic but why not change pump , clean and wash everything else , change filters more often than required for awhile?
Hotshot
Joined: Jul 2013
Posts: 14,052
Likes: 2,122
the metal shavings are likely caused by either a HPFP failer or a pening injector failure. metal from either will get into the fuel tanks via the return line from the injector rail / HPFP system. once the metal is in the fuel tank, it gets scoped up by the lift pump and hits the primary fuel filter where its trapped. Theres a false assumption that rust is a factor in this failure senerio but the fact that the metal shavings are aluminum does not support that theory.
so all componets are replaced becuase the lines are one time use and if you reuse them you will probally get fuel leaks into your engine since the lines are under the rocker covers. the injectors are replaced since they are either part of the problem of could have metal trapped in them and if left stuck open, you with melt a psiton. the pump is replaced becuase its either the problem or has metal from failed injectors and will soon also fail.
metal from the service station pumps is not what caused this problem. low sulphur fuel has very little fuel lube qualities and the low sulpher fuel shortens the life of the pump and injectors.
so all componets are replaced becuase the lines are one time use and if you reuse them you will probally get fuel leaks into your engine since the lines are under the rocker covers. the injectors are replaced since they are either part of the problem of could have metal trapped in them and if left stuck open, you with melt a psiton. the pump is replaced becuase its either the problem or has metal from failed injectors and will soon also fail.
metal from the service station pumps is not what caused this problem. low sulphur fuel has very little fuel lube qualities and the low sulpher fuel shortens the life of the pump and injectors.
Thread Starter
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
the metal shavings are likely caused by either a HPFP failer or a pening injector failure. metal from either will get into the fuel tanks via the return line from the injector rail / HPFP system. once the metal is in the fuel tank, it gets scoped up by the lift pump and hits the primary fuel filter where its trapped. Theres a false assumption that rust is a factor in this failure senerio but the fact that the metal shavings are aluminum does not support that theory.
so all componets are replaced becuase the lines are one time use and if you reuse them you will probally get fuel leaks into your engine since the lines are under the rocker covers. the injectors are replaced since they are either part of the problem of could have metal trapped in them and if left stuck open, you with melt a psiton. the pump is replaced becuase its either the problem or has metal from failed injectors and will soon also fail.
metal from the service station pumps is not what caused this problem. low sulphur fuel has very little fuel lube qualities and the low sulpher fuel shortens the life of the pump and injectors.
so all componets are replaced becuase the lines are one time use and if you reuse them you will probally get fuel leaks into your engine since the lines are under the rocker covers. the injectors are replaced since they are either part of the problem of could have metal trapped in them and if left stuck open, you with melt a psiton. the pump is replaced becuase its either the problem or has metal from failed injectors and will soon also fail.
metal from the service station pumps is not what caused this problem. low sulphur fuel has very little fuel lube qualities and the low sulpher fuel shortens the life of the pump and injectors.
I understand everything but I still question the injectors? They aren't stuck open now and if the rest of the system is being cleaned where is anything going to come from to get in the injectors?
I have a real hard time spending $5000 on new injectors "just in case".
Laughing Gas
Joined: Dec 2012
Posts: 1,035
Likes: 18
From: Alberta
If you do all your own mechanic work and can afford to spend a lot of time into it, it may be worth trying. It's just a lot of time to be spent if the HPFP is changed and injectors are reused...All back together only to discover that you've got an injector hanging open.
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griswold
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Mar 11, 2005 04:22 PM