How important is air removal?
 

Put on a mechanical gauge and confirmed that I need a lift pump. Besides just pumping, products like Air Dog and FASS also remove water and air. Then there are pumps like Walbro, Holly Blue and MITUSA that only pump, use your own filter.

Is the stock filter that bad? Truck seems to remove water now.

I've been told air removal will prolong life of injectors. Is it really that important? Costs a lot more money do to that.

Truck is stock and will probably remain basically that way.

Thanks

it's nice to have air removed from your system. i've had to chase down an air in fuel problem before and it's a pain. but i could see why they would be a good idea to remove air and water because i imagine they filter alot better than just a regular filter imo.

Big filter heads (1/2" NPT in and out) for use on semis and tractors can be had for $20-30 from the Parker store.

Fuel flow is more important a consideration than "air separation". Chances are that any of the pumps would be good for you; anything is an improvement over stock.

How do FASS/ AirDog separate air from the water again?

It's magic. Supposedly they remove finely dissolved air from the fuel, but you have to see the demonstration at a trade show, swap meet or wherever they have it at any given time. Maybe there's a you-tube of it somewhere. I'd like to see it.

If they actually do remove entrained air from the fuel then they have their work cut out for them, what with all the turbulence from pumping 90% of the fuel they move back into the tank through the regulator.

If your one of those guy's lookin to pull every ounce of HP out of your truck and/or you make your livin off of your truck and it's power I guess I could validate the air removal. But for the rest of us, well who knows. I'd like to have one if they would make it a mechanical pump but I'll never, by choice go back to an electric motor pump again.

I recommend a aftermarket fass/airdog lift pump because of that whether stock or not....AIR.

air/vapor in the fuel system prevent your engine from producing maximum power and efficiency. putting air filter into your diesel engines fuel delivery system will remove the entrained air/vapor which has been proven to cause galling and pitting of the injector barrel and plunger assemblies. This of it this way...When you're truck is moving at speeds and it's driving down the road the fuel is being distrubed and is constantly moving around mean the air is going to circulate. This will be even worse when your fuel tank gets lower in fuel....

By having entrained air and air vapor in the fuel, the engine does not perform at the manufacturer's specification, and the fuel injectors and fuel injection pump are not properly lubricated. See the diesel fuel in our trucks is what lubes the parts. Even the ULSD even though the sulphur has been eliminated to a certain point still provides some lube which is another reason why it's important to add cetane booster to your rig.... Air and fuel vapor occupy the space that should have pure fuel, thus delaying the injection of fuel (retarded timing) into the combustion chamber, as well as limited the lubrication. The air/vapor present in fuel is very inconsistent, making it virtually impossible to adapt the varying degrees of changes in injection timing.

To sum it up in laymens terms...Air in the fuel system is detremental to our engine. It can cause injector failure,etc. Air in fuel be punched into the rail at 23000psi is not a good thing for a stocker....you see what I am saying?

I am not for sure where you shop but even a small 90gph pump by fass or airdog shouldn't be no more than like 450-500bucks......

But whatever air is in the system is a part of the manufacturer ratings. They weren't runnin one of these air removal filters during there testing to get these ratings certified and approved by the government standards boards and the pupms weren't designed around these removal systems either.

I don't think these pumps hurt anything by any means, just overkill to me.

completely understandable.....However pure fuel is much better than fuel with air in it... Will ultimately result in better combustion and ultimately provide a more consistent HP.:tu:

I like the idea of a 2 micron filter instead of the larger stocker, the feed screen on the stock pump traps any floating debris to fight the already weak pump, my truck had both problems now im air dog and feel like a big dog.

But HOW do these pumps remove air?

And where do I find an aftermarket entrained-air removal unit without the pump or the filter attached that does the same thing for a different fuel, hydraulic or fluids processing application?


And how popular are fuel/ air separators on any other race vehicle? Pro-Stock, Outlaw 10.5, gasoline sled pullers, et cetera... I'm not too familiar with this, how many of those guys run fuel/ air separators?