Aeromotive A1000 won't keep up, any ideas?

Ive had alot of people tell me that they think the Aeromotive 10 micron filter is the culprit. Anyone here have good luck with one of these? Im thinking I pop it open, pull out the element and put it back together hollow and see what happens.
 
Sean said:
Its the fuel circulation that can cuase the issue. The return can push fuel away from the picup tube and cuase cavitation. Seen it a few times. Try putting more fuel in the tank.
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That's something I was wondering too. If that's the return line, it sure is awful close to the pickup line. I could see that causing some issues.
As for the A1000, we've ran them for years with no problems. I'm using a sumped tank, -10AN to a 10 micron filter, A1000 (no filter after the pump), -10AN up to a y block, -8AN to an Aeromotive regulator for the motor, and a Holley regulator for the nitrous. Everything is fed from a single A1000 and I've never seen any pressure problems, and it sees a good amount of street use and never had an issue.
 
502SS said:
That's something I was wondering too. If that's the return line, it sure is awful close to the pickup line. I could see that causing some issues.
As for the A1000, we've ran them for years with no problems. I'm using a sumped tank, -10AN to a 10 micron filter, A1000 (no filter after the pump), -10AN up to a y block, -8AN to an Aeromotive regulator for the motor, and a Holley regulator for the nitrous. Everything is fed from a single A1000 and I've never seen any pressure problems, and it sees a good amount of street use and never had an issue.
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Seen that exact problem 5-6 times on similarly equipped stangs with the same pump. I however would not be running anything beyond the 100 micron filter with that pickup on the inlet to that pump, if he wants to test the filter simply take out the element. .It doesn't have a good draw ability to start with. A restritive filter makes the problem worse.
 
I have almost exact same setup and mine is fine - it has a rising rate regulator though. My base pressure is 60 and rises to almost 80 during a run on the datalogger. My brother runs the exact same setup (including the 100 micron filter) with no issues whatsoever.
 
Fuel filters have 10 micron elements inside their inlet tip so I wouldn't worry too much about skipping the 10.
 
You mentioned the pump was mounted level with the tank. I dont know how to interpret that. I think the fuel system vendors require the pump to be no more than 18" from the PICK UP POINT. So is the pump mounted 8-10" from the hat?(with a pre filter attached and fittings?) or is it around the corrner? (so in reality the pick up is 4' away?) I'm pretty sure this is the biggest push behind Aeromotives new steath cells and tanks.(packaging of pump and pre filter in tight confines) It is almost impossible to have a street car with enough conveinent mounting locations and space to plum like the fuel system people want.
 
84mercury said:
You mentioned the pump was mounted level with the tank. I dont know how to interpret that. I think the fuel system vendors require the pump to be no more than 18" from the PICK UP POINT. So is the pump mounted 8-10" from the hat?(with a pre filter attached and fittings?) or is it around the corrner? (so in reality the pick up is 4' away?) I'm pretty sure this is the biggest push behind Aeromotives new steath cells and tanks.(packaging of pump and pre filter in tight confines) It is almost impossible to have a street car with enough conveinent mounting locations and space to plum like the fuel system people want.
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it is mounted level with the bottom of the tank. to the front of the plastic tank cover. the pickup is in the stock location, then a -10 line runs about a foot down and 90s into the 100 micron filter.

The tuner seemed to think it was a bad fuel pump. So I borrowed a new one and am going to give it a shot. If its still an issue Ill have to rethink the tank situation.
 
Hopefully you just got a bad pump it wouldnt be the first or last time that has happened. It would be a good deal if it was just a voltage drop thing or a plumbing issue. Were you feeding both rails with full pressure via a y-block then returning using the regulator? or did you use some kind of a rail mount regulator? Corner feel rail deal? I have seen pressure drop issues when you don't feed the rails full boogie. You end up starving the last injectors at the end of the pipe and have pressure drop issues.
 
84mercury said:
Hopefully you just got a bad pump it wouldnt be the first or last time that has happened. It would be a good deal if it was just a voltage drop thing or a plumbing issue. Were you feeding both rails with full pressure via a y-block then returning using the regulator? or did you use some kind of a rail mount regulator? Corner feel rail deal? I have seen pressure drop issues when you don't feed the rails full boogie. You end up starving the last injectors at the end of the pipe and have pressure drop issues.
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Ive got a -8 feeding the drivers side rail from the pump, then a -6 crossover to the front of the passenger side rail, then a -6 line from the back of the passenger side rail to the regulator so the regulator is after all the injectors
 
I really don't like to see that crossover business. That's NOT how the vendor that makes your pump wants you to do it. It may not be the root cause of your problems, but it may be a contributing factor.(that layout might work to 500flywheel hp,I have never even tried at 600RWHP!) I would also assume thats why the guy tuning your car a first glance had no idea about the fuel system. He prohably inferred you were just another fella with fancy lines & fittings with a stock type layout. If he would have spotted a y-block fedding aftermarket rails,injector,regulator and a huge ass return line , he would have inquired... So to sum up some of the conversation here before you potentially burn out a borrowed pump. My quarrels are sounds like the pump inlet is too far from the pick up point, the voltage is in question, and me thinks you need a y-block some fittings and to remount and plumb the regulator.....
 
The thing is, im not even close to maxing an A1000 out. I may make 600 crank hp if im lucky. The car has aftermarket rails on it and shouldnt have any issue supporting my hp level. People have made more power on stock lines than I am right now. Its running out of fuel when im making just over 400rwhp on the dyno.
 
your right you shouldn't have a problem.. but you do.... In my experiance what everyone else gets away with and what I can get away with are two different things (murphys law) 400RWHP is still 450-490flywheel! Still more than I would personally chance on my investment. It sounds like you have some good parts. But also beware of a conglomeration of different vendors stuff all run together. There are many veriables. Id of fuel rails, quality U.S.built regulator,ect... I would set the thing up around the pump you have. I think they have a diagram for a 700RWHP fuel system NA. Follow it to the t. Work the bugs out and move on, with that part of the car being done. Why buy all that aftermarket stuff and not run it the way the tell you? but then mock the factory install that wasn't adaquite in the first place? Again all talk is out loud thinking.. I do hope you resolve this soon, cause i'm sure the tuner isn't happy about waiting on a resoulution for this to get paid.
 
Turns out it was the pump. Swapped in a new one that Brad let me borrow, changed nothing else, and its working just fine. At least it proves I sorta know what im doing, LOL.

Guess Im sending Aeromotive back a pump.
 
good to hear that you got it all figured out... i was hoping it was just that and not how u had your lines ran.. in one rail and out the other side into the regulator. thats how i am running mine too so im glad i dont have to redo it now..
 
Glad you got it squared away Matt. I was thinking it was the pump. I made 700+ with basically the same setup. 18 gallon cell, (sumped), A1000 right below cell, -10 line from cell to pump, 100 micron before pump, 10 micron after, -10 lines to front of car into Y-block, 2 -8's coming out into back of aeromotive rails, out the front of rails (-8) to regulator (boost referenced), - 6 return....... Works for me, but the A1000 is only supposedly good to 800hp for forced induction, 1200 NA...... I wouldnt mind stepping up to the eliminator pump for mine, but it works for now! I street drive my car everywhere from the other side of the earth from where most stuff goes on......

Rudy

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Take out as many 90* fittings as you have, replace them with 45* fittings. If that doesn't work, I have an Aeromotive Pro Series pump Ill sell you cheap.

Damn, I was to late... Still, if you want a bigger pump let me know.
 
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