Gas on Empty?

[BadNewsBears]

Originally posted by: Turin39789

Originally posted by: Roger
Watch it Conjur, you never know when you are going to need assistance

Speaking of assistance, wanna rebuild my motor? I think I've got an oil leak coming from behind the pulley, probably a ring

Front main.

 

[thomsbrain]

a round of applause for roger for being the only person on this board who has a clue about cars AND being generous to constantly set us straight about them.

 

[Joemonkey]

I have to agree with *shudder* skoorb on this one... idiot light comes on, i fill up

 

[Pacfanweb]

Originally posted by: Munchies

Originally posted by: Eli

Originally posted by: Pacfanweb

Originally posted by: Munchies
Not too bad considering its only 20 bux for the whole thing im overloaded with work as it is, I really dont care about my site, I get about 15 overhauls a week. Then I balance my own project, coupled with a few high performance, CNC digitizing jobs. Its crazy as hell out here. My site is just a means of communicating to my buddies over at binderbulletin.org

15 overhauls a week of WHAT? Engines? You can't overhaul 15 engines a week even if you're just doing the old backyard rings/bearings/gaskets rebuild.
Much less perform a high performance overhaul, which is much more work.
I certainly hope you're talking about overhauling websites or something.

Lawnmowers. :laugh:

No, IH's its not just me you dumbfvck think before you speak.

Regardless, you still can't do 15 a week. It'd have to be you and quite a few others to do 15 a week.

 

[EmperorIQ]

wow, i'm just happy that i started a thread which has 100+ posts on it.

Thanks a lot Roger. I won't leave my car on empty, but I will fill it up at about 1/8-1/4 mark now.

in conclusion, my friends weren't right cause they didn't have the right argument, and I wasn't right, no one wins, so i'm happy knowing that i don't have to admit defeat to them.

thanks all.:beer:

 

[Evadman]

Originally posted by: thomsbrain
a round of applause for roger for being the only person on this board who has a clue about cars AND being generous to constantly set us straight about them.

:brokenheart:

 

[Howard]

Originally posted by: blazert40
Full tank makes your car weigh more, which means more to move, which means your car has to work harder and thus burn more gas, I notice a difference in off the line pick up with an almost empty tank.

You drive a Metro?

 

[Howard]

Originally posted by: Munchies

Originally posted by: Eli

Originally posted by: Pacfanweb

Originally posted by: Munchies
Not too bad considering its only 20 bux for the whole thing im overloaded with work as it is, I really dont care about my site, I get about 15 overhauls a week. Then I balance my own project, coupled with a few high performance, CNC digitizing jobs. Its crazy as hell out here. My site is just a means of communicating to my buddies over at binderbulletin.org

15 overhauls a week of WHAT? Engines? You can't overhaul 15 engines a week even if you're just doing the old backyard rings/bearings/gaskets rebuild.
Much less perform a high performance overhaul, which is much more work.
I certainly hope you're talking about overhauling websites or something.

Lawnmowers. :laugh:

No, IH's its not just me you dumbfvck think before you speak.

IH = I'm High?

 

[Evadman]

Originally posted by: Howard

Originally posted by: Munchies
No, IH's its not just me you dumbfvck think before you speak.

IH = I'm High?

I Head engines

 

[BadNewsBears]

Your telling me we can't but we do. I dont get it?

 

[BadNewsBears]

Originally posted by: Evadman

Originally posted by: Howard

Originally posted by: Munchies
No, IH's its not just me you dumbfvck think before you speak.

IH = I'm High?

I Head engines

No silly.
International harvester. 304's and all the SV's to the MV's 446's 504's and the like. Not to mention the fire truck engines with the dual dizzy's. Blew my mind when I first saw it

 

[Pepsi90919]

dizzy's, eh.

 

[BadNewsBears]

Distributor

 

Yes it is but it really depends on the pump. A little pump powering a neon won't get hot but if your using an aftermarket pump they usually say on the box to not run it empty. I have a Walbro 340lph fuel pump and it gets alot louder when the tank is below 1/4 tank

It actually depends on the type of fuel injection, throttle body fuel injection generally requires about 25 pounds per square inch or lower, Port fuel injection generally requires 40 to 60 pounds per square inch, as for Munchies, he's running a carb which requires 3 to 8 pounds per square inch.

Well about fuel slosh... pretty common in a lot of cars including my own.

At high grip cornering situations you can sometimes deprive the pump for picking up fuel to maintain a constant supply to the injectors. You'll prolly never encounter this in normal everyday driving anywho. It causes a loss a fuel pressure... car will buck like mad under power. Surge tanks can fix that.

Yes this can happen in high G manuevers but it should not occur in normal driving situations.

Water in large ammounts of course is not good, some condensation in the tank over time (decades) might rust some stuff, and clog lines with rust, but other than that no. I have run a water/alcohol jet system using a carb baseplate on a 19:1 race engine, with great results. Fuel pumps do require cooling,but the gas doesnt do it in my truck. I happen to have in in tank system on my !CARB'D! scout, and just for the hell of it, I stuck a thermometer in my tank a few minutes ago, and it measured 1/2 degree lower than the ambient temp outside.

You have no clue do you.

 

[CFster]

We see it all the time in my business (wholesale auction).

Cars run low on gas (to the point of running out) - with burned up fuel pumps. Happens ALL THE TIME. You think a person turning in a lease car is going to bring it back with a full tank? No, they leave a gallon in it - then it gets moved around the dealership a few times, then it gets moved to an auction like ours. By the time it gets to us it's on empty with a burned up pump. I'm talking cars with 30k - 40k on them. We change several a week. Some makes are more succeptible than others. GM and Chrysler products seem to be the prime offenders. The least they could do is provide an access panel on the bottom of the trunk or under the back seat (like foreign cars do) to make things easier - I'm sick of dropping tanks.

 

[Calin]

Originally posted by: Chaotic42
Well, I'm not a carologist, but it seems like all of the various water, bits of crap, and other impurities would settle to the bottom of the tank. On a full tank, they make up like 1% of your tank. On an almost empty tank, it would be 50%.

It's like drinking from a big sink of water with eggs and bits of food at the bottom. You're better off if it's full.

If the water is .5" above the crap, it's probably gross.

I'd say the fuel intake from the fuel tank isn't floating at the top fuel level... is at fixed width, I suppose (I am not a carologist either ).
the best reason is that during winter, in case of snow blocking the road it is much better to have a full tank of gas than an empty tank of gas.

Calin

 

[Evadman]

I had to bump this to show the stupidity in this thread again. More must know of Munchies uncanny ability to shove not only his head, but one of his legs into his own butt.

 

[olds]

Whoa! Everbody slow down.
Back to the OP. Why would you put a gas in your car?

 

[Mandos]

Originally posted by: Roger
Who ever the hell you are Munchies go back to bagging groceries for a living, you are not cutting it as a auto tech.

UHHH NO. Thats the bigeest load of BS if heard in a while. And I should know considering I build engines for my income. Run it dry it wont hurt nuffin. It will just sputter a bit, cant hurt

Its going to not makea diff. Ever hear of wtaer injection on gas engines?

I never heard so much BS in one thread from one member before.

These are the facts ;

All fuel injected vehicles from the factory have in the tank fuel pumps, these pumps are cooled by the fuel passing through them, the fuel pressure regulator on the fuel rail returns unused fuel from the engine back to the tank, this serves two functions, one, it acts as a reserve of fuel for full throttle and full load conditions, two, it acts to cool the fuel pump, the pump is continually pumping fuel from the tank to the engine and back to the tank again.

Most fuel pick ups inside the tank are raised a half inch of the bottom of the tank to prevent debris from being picked up but this is not to say that it cannot make it's way into your fuel system.

Running the tank dry is detrimental to the entire fuel system and you engine in the following ways ;

Condensation will form on the walls of the tank, this water will find it's way to the fuel system, water is damaging to fuel injectors because it is corrosive, also the ECM will try to correct a lean condition that is present because of the water, in newer vehicles with OBD II this will trip the check engine light, not to mention rusting the tank, fuel lines and fuel rail(s).

Water in a carb is not as bad but water will naturally go straight to the bottom of the fuel bowl, if the main metering jet(s) are raised slightly above the floor of the bowl then corrosion will occur inside the carb, incidentally all carbs have accelerator pump feed(s) at fuel bowl level so water will find it's way into the accelerator pump well thus corroding it.

While your at it, go back to school and learn how to spell.

Man Roger, I was wondering where you were! XD

/me hides in a corner from Rog's fury as a guru of autos

 

[Mandos]

Originally posted by: Munchies

Originally posted by: Mwilding

Originally posted by: Munchies

Originally posted by: Roger
I normally fill up when it drops below the quarter full mark on the gas gauge, for a vehicle driven seldomly, having it filled all the time will decrease the chances of water condensation.
On long trips with multiple fill ups, waiting until it hits the red zone will not hurt anything, leaving the vehicle parked in a wet climate with the tank empty will cause condensation.

WHo the hell is ever heard of roger the auto guy?
I am cutting it, building hopped 392's that seem to just never fail, and while I am an ENGINE guy, I do restore cars outside of my career as an performance mechanic. Asshat Youl probably whip out with something about how you were working on eninges before I was a drip on my mommas leg. Spare me, I do a good job, and btw I am not an auto tech. I am an IHC performance engineeer.

Without ever meeting you, I am going to guess that you went to automotive engineering school because you failed English.

Nope. I never went to school, all my auto knowledge has been passed down through my family, I am goign to colledge to become a firefigter pretty soon though, and run my shop as a part time deal.

Might want to take English as well.

 

[sillymofo]

Without reading the thread, I assume there's already been "settiment at bottom".... blah....

You car draw gas from the lowest point, so there would be no freaking settiments. That, and most modern cars would have atleast 2 filters... so your engine won't be affected (you might need to replace the fuel filter sooner than normal). The only reason I fill up mid tank is because:

1. I don't like to push my car
2. I don't know when I might want to hop in the car and haul ass... so a full tank is always good.

 

[PCTweaker5]

Originally posted by: Pacfanweb

Originally posted by: resinboy
hate to differ here, but I have been a mechanic for 27 years, and the reason they have a return line from the fuel rail back to the tank is to COOL the fuel back down so the injectors don't lock up from the elevated temps. They have, however changed this recently ( 2003, 2004 models) on some cars by increasing the pintle diameter on the injectors, and only running a supply line to the rail- no return line anymore.

That is correct, but what does it have to do with whether running your vehicle low on gas will/won't damage it?

Nothing you moron! He was answering the confusion as to whether or not the fuel acts as a coolant for the pump.

 

[MercenaryForHire]

Roger >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Riceboy > Munchies

- M4H

 

[Papagayo]

I was always told to never have it below half full in WINTER..

If the fuel level is low, it more likely to freeze in cold temp..

 

[MercenaryForHire]

BTW, I can't help but ph34r Munchies' l33t HTML coding on New Page 2, the massive ORDER QUEUE FOR MARCH 0 / 2, and of course the sidebar ... UNREGISTERED Elevator by Cool Focus [www.coolfocus.com]

I'd trust my ten-year-old Karelian with a socket wrench to build an engine before I'd let you near anything bigger than a lawnmower.

- M4H