33 gallon Aero Tank after 13 years

Post by **fulsizjeep** » Sun Apr 22, 2012 7:04 pm

I dropped the tank and fuel lines today looking for problems. This was installed in Spring of 1999 after I drilled a hole in the side of the poly stock tank. It has been used to high center the Jeep a few times and worthy of inspection after having the Holley lawn sprinkler demo on Steel Bender trail. The 1/4" metal return line is definitely clogged and will be replaced with 5/16" hose. Will be going to vented fuel cap and all new rubber lines and try to lean on the bottom of the tank less in the future...

Tad · Post by **Tad** » Mon Apr 23, 2012 4:25 am

That's a big tank!

bigun · Post by **bigun** » Mon Apr 23, 2012 9:00 am

Everytime I see how close the driveshaft is to the fuel tank I worry about what would happen if the ujoint should fail at highspeed!

Post by **fulsizjeep** » Mon Apr 23, 2012 10:51 am

If it was to grenade at high speed, it would not matter what happened.

Post by **rstep** » Mon Apr 23, 2012 12:47 pm

That's easy BOOM. ^#(^

Post by **fulsizjeep** » Mon Apr 23, 2012 4:28 pm

The filler hoses I need were in stock and shipped today. I hope to be driving this junker again next weekend.

Post by **rstep** » Tue Apr 24, 2012 6:28 am

bigun · Post by **bigun** » Tue Apr 24, 2012 9:38 am

I guess I need to say this here, you'll never be able to afford to fill it!

Post by **fulsizjeep** » Thu Apr 26, 2012 3:50 pm

got 2 boxes today...

the filler hoses and...

YAY for the tax return!

Gumby · Post by **Gumby** » Thu Apr 26, 2012 5:25 pm

Was there another one in the othre box too?

Post by **fulsizjeep** » Fri Apr 27, 2012 4:13 am

I wish Martin. Like a bogo! I want one on everything AMC here.

Post by **rstep** » Fri Apr 27, 2012 6:01 am

Nice

Post by **fulsizjeep** » Tue May 01, 2012 6:42 pm

OK, I am trying to get this fuel system straightened out before I change the carb. Right now, I have a clear plastic Wix inline filter right before the NAPA brand Carter pump then a filter by PS pump with return line on 5/16" hose and tube back to tank. This replaces the stock 1/4" return that was plugged up. I had a regulator (Mr Gasket) after the filter just before carb because I thought it may be restricting fuel to the carb. I seem to run out of gas at 60 or so, less if I am pulling a hill.

Jerry from Globe dropped by for a bit on his way through here last evening. He had something similar and moved the filter by the electric pump to after the pump and it fixed it. I think I am placing straight hose where that filter is and see what happens next.

Thoughts welcome. I haven't burnt it to the ground yet at least.

Post by **Stuka** » Tue May 01, 2012 8:40 pm

I have never been able to have a regulator after a split filter work properly. It basically results in the fuel going to the return line. But ultimately the return line regulates pressure on its own. You are not going to blow past the needle and seat on the carb so long as the return line is not plugged.

And when running an electric pump, I always put the filter after the pump. If you put it before you can starve the pump as they are far better at pushing than pulling. And as long as the filter by the pump is good, there is no need to have one later. Although in our case, it operates as the fuel split for the return line as well. And I am not sure if a T in its place would work, as I think the filter actually regulates fuel flow to the return line to an extent by itself.

Post by **rstep** » Wed May 02, 2012 11:04 am

Just a question,don't you want the fuel pump higher then the out let of the tank ?I just rember back in the day's guy's at the strip talking about getting it at the highest point do-able.I removed the one that came on the Chero from the frame rail because of this .

Post by **fulsizjeep** » Wed May 02, 2012 3:02 pm

The pump is on the left frame rail just behind the cross member. The pickup tube in the tank is just a bit lower than the pump. I plan to delete the filter just before the pump this eve and give it a spin.

jaber · Post by **jaber** » Thu May 03, 2012 7:00 pm

rstep wrote:Just a question,don't you want the fuel pump higher then the out let of the tank ?I just rember back in the day's guy's at the strip talking about getting it at the highest point do-able.I removed the one that came on the Chero from the frame rail because of this .

I was always told the opposite. That you wanted a gravity feed to assist the pumps draw. I run a filter in front of my pumps to keep debris from causing them problems. Its usually one of those clear, replaceable screen ones, then a paper near the carb. With the tanks I have, it is handy to be able to pull over, swap a screen and go.

Post by **Stuka** » Thu May 03, 2012 9:48 pm

jaber wrote:
rstep wrote:Just a question,don't you want the fuel pump higher then the out let of the tank ?I just rember back in the day's guy's at the strip talking about getting it at the highest point do-able.I removed the one that came on the Chero from the frame rail because of this .
I was always told the opposite. That you wanted a gravity feed to assist the pumps draw. I run a filter in front of my pumps to keep debris from causing them problems. Its usually one of those clear, replaceable screen ones, then a paper near the carb. With the tanks I have, it is handy to be able to pull over, swap a screen and go.

Its not bad to have some gas up against the pump, it prevents it from dry starting if it sits. If its high, the fuel will flow away from it which causes it to have to suck air for a bit to get fuel up into it. Which isnt such an issue for carbed vehicles as the fuel bowls should have fuel in them. For EFI however they rely on fuel pressure to shoot fuel out. Which is why the pump is in the tank typically, less air to pull out of the line.

Post by **fulsizjeep** » Sat May 05, 2012 8:14 pm

Well, I finally fiddled with this fuel issue today. After removing any possible restrictions and seeing 8psi on the gauge at the carb, I changed the fuel pump back to the old one. Problem solved. The new pump just does not have the volume to keep up. ~x( Also got the Truck Avenger installed with 57 mains and 68 secondaries. It is a little lean but runs well on the highway and rocky terrain on the hill out back. Might be getting this close now.

Post by **Stuka** » Sat May 05, 2012 8:23 pm

I had been wondering the volume of the pump. I think I ha started to ask, but then got busy and never submitted it. Glad you got it fixed!

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