Is it safe to use a standard post-pump filter in a pre-pump design?  IE: a standard tracker OE filter mounted before an in-line pump ...with a second after it of course.

I use a stock sammie filter in front of my f-150 high pressure pump it works good as long as you have alot of paper in it or a large area like the fram filters and not some of the new smaller ones that also seam to have a smaller micron element in them that clog easy.

I use a stock sammie filter in front of my f-150 high pressure pump it works good as long as you have alot of paper in it or a large area like the fram filters and not some of the new smaller ones that also seam to have a smaller micron element in them that clog easy.

Thanks, I was speaking of a pre-pump filter to catch the crap from clogging up my actual pump.  I have had mine clog 2 times both while out on the trail in the wee hours too. Additionally, I've dropped and cleaned my tank 2 times which im getting tired of doing!!

Last I found what looks like tiny paper... maybe someone is messing with me and stuffed something in my tank?!  This time I found some gasket maker... probably excess that fell when I sealed the tank back up last go-around.  The only high pressure pre filters i can find are the cost of my MSD fuel pump itself and not clear so i cant tell when to change it.  I dont mind being pro-active and replacing filters i cant see into but not at roughly $100.

...could the clear cheap plastic filters for carbs not stand up to the suction pressure before a high pressure pump?

What pressure is there on the pump suction line?   

Theoretically - the greatest pressure you could have on the suction line is negative 15 psi (1 ATM) and that would be if you could achieve a perfect vacuum (does such a thing exist?) - and if you could achieve that, you'd probably collapse the fuel tank.

I've used generic plastic filters like those below on both suction lines & delivery lines for carbed engines, but never on EFI, becuase all my EFI engines have had in tank fuel pumps with a gauze sock on the intake - I see no reason why one should not work on the suction side of an EFI pump.

you need to explain a little better on what your setup is like, if it is stock and you have paper in there the older style high pressure filters that have the old glue in them the new fuel with the alcohol in it will eat it up and the paper will turn sideways and all of the dirt will end up in the screen on your injector and mess with the regulator and any replacement hose from yester year that is in line that some one put in that was not oem.

Yeah I went straight to the meat/potatoes but thought I covered most of the important ground.

I have a stock sami tank going to a remote mounted inline MSD high pressure pump, through the factory hard lines into a stock tracker high pressure filter, then to the 1.6/16v fuel rail. My last 2 problems have developed between the tank and inline pump resulting in a no-start situation... everything forward of that is good

What would you guess the suction pressure is behind an in-line style high pressure pump?  These clear carb filters can handle 5-6psi positive pressure i would assume!

Suction by definition is a vacuum or absence of pressure.

well I would make sure that your tank vent is working and the stock fuel line is not large enough going into a 16 valve engine, but you probably already know that.

check, check, and double check.

So to give you all an update or some insight....

When I orig. swapped to the 16v I had read up on swapping over the tracker in-tank pump into (and by modifying) the sami tank.  A well known mod. I decide against this due to time/effort plus I wanted a replaceable pump I didn't need to drop the whole tank to gain access.

I have several clear carb filters as pictured above laying around from when i had the 1.3.  I took the plunge yesterday and installed one between my stock sami tank and my high pressure inline pump. So i am here reporting back that I see no problems after test driving so far.  What I DO see is about a 1/4oz of rust/junk in my $4 filter that got caught before my $125 pump and my $15 OE filter.

If your curious of my build:
http://www.zukiworld.com/forum/build-diaries-how-to-diy/build-up-87-sami-1-6-16v-megasquirt/

I've seen NEW replacement aftermarket gas tanks on ebay for the trackicks at under $100. I was gonna buy one to mod for more capacity. You may want to look into a replacement for yours if your having so many rust issues. You'll probably never get it all cleaned out.

Sounds like a bunch of crap in the tank, there are some fuel tank sealers that are applied and they form a skin over the entire inside of the tank.

The metal fuel tanks do not survive very well with E10-15 fuels because they are so easily contaminated by moisture/water which then corrodes the steel. Once the corrosion starts it will not stop unless the tank is removed, emptied, neutralized and then lined.

I have had several plastic fuel filters placed on the suction line of a out of tank Fuel injection fuelpump and have had the filter collapse. I now only use a metal canister filter, some even have had replaceable filter media inserts.

Could the pump be mounted too high? does it work better with a full tank?

on my red samurai with a 16 valve in it when I first got it, it had the high pressure pump mounted to the bottom of the tub, it worked fine but you could not hear yourself think it was so loud,  i then moved it to the frame with the stock sammie filter in front of it with no high pressure filter at all and it works great, the only time I had a problem was changing out the fram filter for a new napa filter from russia, it killed my rig in the middle of a run and had to be towed out, changed out the filter to fram again and never looked back!