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Old 09-05-2003, 10:19 PM   #29
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gas pumps push best

I have been reading your post as we have the same unit, so I called a friend who is the best mechanic I have ever known and he reminded me that a fuel pump pushes gas much more efficiently than it sucks gas, especially for a long distance or there is a small air leak.

He also said many 454's in trucks had service bulletins in the 1980's to install a fuel pump in the back in or near the tank and put a plate on the front where the mech. fuel pump is to replace it. Most people just added the rear pump as it assisted the front pump and since they are low pressure compaired to fuel injected systems on newer units, the the main worry is to have enough pressure not really too much as long as the pump is meant for carb. systems. He saw no reason for an on and off switch to be used for this reason.

lol, jem
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Old 09-06-2003, 07:05 AM   #30
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the on off switch is a easy way to get the gas when you want it. the permanent fix is a oil pressure switch and a relay to turn the pump on and off. i really dont need the electric pump except when i get in a hard pull and need the extra gas for the carb when all four barrels are sucking gas.
the switch is an interim fix untill i get the relay and drawing to install . then the switch will be for my aux fan im going to install to help the radiator . and that will be used in the hard pull situation.
i screwed up when i bought the trail blazed didnt think that car was as heavy as it is. it id really to heavy for the silver weenie. im probably fry my transmission on a long hill , even with the large external cooler.
peter im going to look for a spot to install the large canister filter where did you get yours???
thnx
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Old 09-06-2003, 07:37 AM   #31
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Quote:
Originally posted by wb13798
...
peter im going to look for a spot to install the large canister filter where did you get yours???
..
It was there when I bought the rig.
Even if you don't install a filter like that, you would be better of with an inline paper element filter as the first in line.
Thats what I had in front of the elctr fuel pump before I installed the glass filter. It lasted over 3k miles before I removed it to install the glass filter for ease of inspection.
I cut it open and found lots of debris, but it did not clog up.
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Old 09-06-2003, 11:25 AM   #32
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think i will go to wally world and get the biggest in line thet have and take the glass out and remount on the inside of the frame rail and put the filter on the poutside where i have the pump located now.
here is a jpg of the install at present.
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Old 09-06-2003, 03:38 PM   #33
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here is the redo not pretty . couldnt find a big filter 3/8 in 3/8 out so going to put this on untill i do . wouldnt mind having a canister like peter has. im looking. going to check fleet pride monday/ maybe there.
i put the pump back into the hanger . the picture shows the pump laying on the frame rail.
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Old 09-06-2003, 05:16 PM   #34
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Fuel filter from hell...

You can go to your local auto parts/marine parts store, and get a spin-on fuel/water separator, consists of a mount, with the adapters for the correct hose sizes, a housing, and a spin-on fuel filter. This is something for everyone with a thirsty engine on a vehicle that gets used intermittently.Separator filter is about the same size as the oil filter on a small car. I had one on my boat (with chev V8 engine), and have installed them on customer's SOB Motor Homes, with good results.
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Old 09-06-2003, 07:52 PM   #35
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will try the marine parts store monday. that would be great if they have one . i have the filter nednecked for now. didnt think about the marine supply store. thnx
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Old 09-07-2003, 11:25 AM   #36
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Al, it looks like your pump already has an inline fuel filter, or am I mistaken?
Here is a picture of the 'filter from Hell'.
It has 1 in and 2 outs, so if someone was inclined to add the generator fuel line, it would eliminate the 1/4 tank limitation.
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Old 09-07-2003, 05:15 PM   #37
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peter
it did but in the relocation i took it off. not a large filter at all i put the same inline i have up front. it will fill the bill for a while. im tired of the filter change problem. i have located a source for a spin on filter , i may not get a ten pounder like you have but i will get a couple of pounds any way. wont stop untill i get one. i took the glass filter apart and it has trash in it. like you said thought i got the tank clean , but now the crap is peeling off the walls. ill post a jpg of the filter i install.
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Old 09-08-2003, 12:18 PM   #38
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visited the boat place this am and they ordered a water seperator filter for me . $34 for the kit. quick silver or mercury .
the filter is a 25 micron filter she said if i wanted a 10 micron she could get it . dont think i need 10 micron filter. what would yooou use???????????????????? lol
al
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Old 10-26-2003, 09:53 AM   #39
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now for the end of the story

finally replaced the manual fuel pump . well that was part of the problem. it was not up to par. i can now go down the road with out the eleectric fuel pump. and can do hills ok no apparent fuel starvation problems. but switch in the electric pump and it is like i just kicked a turbo in. i think i will do what peter has done us only when needed. my electric pump has the oil pressure switch installed to a fuel pump relay. i plan to put a switch on the dash to control the relay input. lo current , switch will last forever.
this problem got some attention/$$
1. electric fuel pump
2. new carberator
3. new manual fuel pump.
4. new water seperator fuel filter.
5. new filler fose. 3ft //1 3/4 $40 retail $ 1.75 per inch retail
6. gas tank cleaned.

ebd of story i hope..
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Old 10-26-2003, 10:29 AM   #40
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good deal, Al
Since i moved my canister fuel filter to the rear, i haven't had any more problems with clogged fuel filters and it has been 1200 miles.
Had a strange thing happen on my last trip.
After pulling into my camp spot I heard this high pitch sound coming from the engine, like a vaccuum leak. Upon acceleration it didn't go away.
I removed the air filter and tried to locate the sound. It seemed to be coming from inside the carb.
Once the filter was removed and I accelerated 1 time, it went away and I haven't heard it since???
Gremlins?
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Old 10-26-2003, 06:24 PM   #41
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Peter,

Could it have been something that removal of the Aircleaner "fixed" or did you just scare it good?
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Old 10-26-2003, 07:09 PM   #42
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Peter,

Could it have been something that removal of the Aircleaner "fixed" or did you just scare it good?
Brett, acceleration after removal of the air cleaner is what stopped it.
I already drove 250 miles since, and it didn't come back.
I looked at all the vacuum lines, but couldn't find anything unusual.
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