Great lift pump for the $$$$$!!! - Page 16 - Chevy and GMC Duramax Diesel Forum
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Old 11-21-2012, 12:53 PM   eBay Motors  #151 (permalink)
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Exactly


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Old 11-21-2012, 12:55 PM   eBay Motors  #152 (permalink)
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Quote:
Originally Posted by Derski69 View Post
I'm not worried about air in the fuel system. I think it's a way for people to make more money. I look at it this way the factory setup has no air filter the 6.5's don't have that problem; and if you don't run your fuel too low, I think you won't need to worry about it.
6.5's ran on a few thousand psi on the injectors. duramax's run between 23K and 26K depending on series of motor. the old 6.5's didn't need it as the pressure wasn't high enough to cause problems. the 6.6 injectors run at high enough pressure they may as well be taking a bath in a sand blaster. you want the cleanest, purest fuel you can give them
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Originally Posted by TakeEm View Post
Air is one of the main causes for injector failure. Air will kill an injector just as well as dirty fuel will.


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^this

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Originally Posted by Derski69 View Post
I get that. I'm just saying if you bleed it out after installing a new lift pump there isn't much way air can get back into the system without having some sort of leak.
that removes whats there while sitting still. once you move the truck, fuel sloshes around the tank and begins to bubble. ever shaken a soda bottle? that air is fed through the pickup tube straight to the injectors.

this should help explain it better


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Derski69, don't bother trying to reason with them. Yes air does hurt the injectors, but how much we'll never know because its near impossible to conduct an accurate test.


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a cavitation test would not be hard to set up.
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Old 11-21-2012, 01:12 PM   eBay Motors  #153 (permalink)
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^ exactly. If you don't think air ever reaches these injector your crazy. I believe if trucks had air separator from the factory, the injectors would last. In a common rail truck with a HP pump & HP injectors air can be one of your worst enemies. It is definitely not a way to just make more money.


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Old 11-21-2012, 01:30 PM   eBay Motors  #154 (permalink)
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Here we go again...


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Old 11-21-2012, 01:51 PM   eBay Motors  #155 (permalink)
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Quote:

a cavitation test would not be hard to set up.
A test that air rates the fuel is easy. Running is through an injector to see how much it wears is going to give you biased results because you have no idea how much air is in the fuel or at what psi to run it through the injector. We can all agree its bad but to say its going to substantially effect injector is yet to be proven nor can it accurately be tested. In other words I AGREE but to a different extent. Look at all the dodges running Holley blue/black/red label pumps still running with a lot of miles. Once again I do agree air is bad but when bone stock duramax's getting 200,300,400k miles on factory injectors its hard to peel off 3 more bills for an airdog,FASS,etc...This is a cheap alternative,no more no less.


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Old 11-21-2012, 02:15 PM   eBay Motors  #156 (permalink)
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We all have our own opinions. The price of one injector is enough for me to go with the better pump. To me it's well worth the extra bills for a bit better setup. I am done on this subject. I hate pissing matches!


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Old 11-21-2012, 02:43 PM   eBay Motors  #157 (permalink)
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Amen


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Old 06-16-2013, 11:06 PM   eBay Motors  #158 (permalink)
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Update after a year:
Not one issue. Runs way quieter than my buddies air dog and the truck runs flawless. Balance rates are all under 3 idling in park and drive. I can't even hear the pump running when the truck starts.

I'm running a Donaldson filter now however. I'll update in another year

Ps: The truck still runs with the pump off, but its starved for fuel.


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Old 06-16-2013, 11:27 PM   eBay Motors  #159 (permalink)
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Double post...
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Old 06-18-2013, 06:43 AM   eBay Motors  #160 (permalink)
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Op

Figrued as the OP I should also do an update and let everyone know how its working. Still fully functional, never faultered. No injector problems. I didn't expect this thread to get this huge but I know there are lots of guys out there looking for a cheaper alternative to the high dollar lift pumps/air separators out there. The only thing that I've had any problems with at all was the truck gelled this winter...twice. I don't know if it was the fuel I was getting or what but i couldn't help but wonder if the pump was waxing up faster than the line actually would. Either way, ran PS in the thing the remainder of the winter with no problems. Mileage to date-162,473. Install mileage 129565, Pump installed 3-14-11. Its nice to see that so many people have tried this pump and been satisfied with it..
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