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Old 04-19-2014, 10:03 PM
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Default More fuel trouble need insight.

Ok I have had had a lot of trouble out of my dual hanger. Just when I have the lines down 100/ and just bought a new SUV to tow my car around this happens seeking perspective on trouble shooting advice maybe someone can see aomthing I'm not.

Went to track tonight in St. Louis got one good run in new pb at 11.0@135 1.7 60ft. The car is capable of a lot more but still getting it dialed in.

Any who here's my trouble got the one good run in on the way back to pits keeps cutting out like I have no fuel preasure at ideal I have 45 like I should so here's what I'm thinking.

System is dual hanger with twin 320's aem 2145 fic aeromotive for ge rail
8 feed 6 return

System has no leaks

Line in hanger are all on tight checked already

Only thing in thinking it could be is my shitty female connectors on one of the pumps. Got disconnected was unable to tell when I pulled the hanger. So it would am mount to a single pump failure. Meaning only one pump was working giving me 45 at ideal and less under load.

Or fuel filter clog?

I've had so much trouble with this system on more thing and Imma go with a 320 and an external like a a1000 or 044, what are your suggestions on this?
Old 04-19-2014, 10:20 PM
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Default Re: More fuel trouble need insight.

of course first of all check all filters.
If filters are clean unplug the pumps sequentialy to find out wich one has the problem.


after you find wich one is the cutting pump check the wires, especialy ground wire near the chassis.
if the wirings are ok put the one pump to the others place to see if its not the wirings and its pump's motor

although i believe its the wirings or connectors...
Old 04-19-2014, 10:25 PM
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Default Re: More fuel trouble need insight.

Yea I should have seen if a pump was not pumping while it was Inside the tank lol, all the excitement at the track I already pulled the set up apart because I really wanted to get into the 10's tonight

Then all I would have to do is find a black guy thy looks like ludacris and break into the under ground street racing scene. Lol jk it's late man 0130 I'll see I all Easter morning

Last edited by $MIKE$; 04-19-2014 at 11:35 PM.
Old 04-20-2014, 02:55 AM
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Default Re: More fuel trouble need insight.

How do you have it all wired?
Old 04-20-2014, 05:15 AM
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Default Re: More fuel trouble need insight.

It's wired to spec 8awg to 2 relays

Only sketch thing was the two shitty crimp
Connectors and Honda bond.

That's most likely
My problem but wanted to see what u all think this fue set up has been a pita

Imma give it one more
Chance then it's a inline with a single 320 or a 400 wally
Old 04-20-2014, 07:01 AM
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Default Re: More fuel trouble need insight.

So the hangar isn't the problem its the installer?

Any way are you sure you were loosing fuel pressure when it was cutting out? One pump is more than enough to keep up at low load.

Have you checked the motor? compression leak down? Timing?
Old 04-20-2014, 07:13 AM
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Default Re: More fuel trouble need insight.

Originally Posted by turbohatch96y7
So the hangar isn't the problem its the installer?

Any way are you sure you were loosing fuel pressure when it was cutting out? One pump is more than enough to keep up at low load.

Have you checked the motor? compression leak down? Timing?


The hanger is the problem it's a pos near impossible to ensure correct installation.

No not sure I was loosing fuel pressure that's has just been the troublesome area of the car. If this doesn't work I will check comp. but don't see how it could be the timming Mechaical timming is on
Old 04-20-2014, 07:54 AM
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Default Re: More fuel trouble need insight.

Well you said it happened after you did a run so it could have jumped.
Old 04-20-2014, 07:57 AM
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Default Re: More fuel trouble need insight.

I know you had issues with one of the pickup lines collapsing. it is possible that it has happened again.

I would redo the lines... get rid of the nylon reinforced rubber and get steel reinforced lines... like the braided lines you can use with hose clamps, they also have rubber lines like the nylon ones but they use steel instead. these hold up very well under the high vacuum the pump inlet creates and are virtually impossible to collapse.
Old 04-20-2014, 08:35 AM
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Default Re: More fuel trouble need insight.

Originally Posted by wantboost
I know you had issues with one of the pickup lines collapsing. it is possible that it has happened again.

I would redo the lines... get rid of the nylon reinforced rubber and get steel reinforced lines... like the braided lines you can use with hose clamps, they also have rubber lines like the nylon ones but they use steel instead. these hold up very well under the high vacuum the pump inlet creates and are virtually impossible to collapse.
Yes previous to this I switched to the steel braided -6 lines because of all of the reasons you stated.

I just now re wired pumps with the correct pump connector, test was successful prime I have to let some RVt set on top of the hanger where the wires go set before I will conduct road test.

I also pulled fuel filter aparts there where maybe 6-7 tiny black specs I cleaned reassembled and


After that last run I was getting full pressure at ideal but I tried to got 2 step and nothing went dead at like 5k like it had no fuel.

Is it possible that single pump failure would act this way.
I know one pump is enough to power car very well but with one pump not working is it possible that the other line under pressure started to bleed out the pump that was not working? Or does this not even make sense.

Funny thing is I beat on it on the street maybe 10 3/4 freeway pulls but first pass it takes a ****.

Hey on the bright side finally got my 2 step dialed in. Now I can turn up the boost
Old 04-20-2014, 08:38 AM
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Default Re: More fuel trouble need insight.

Originally Posted by turbohatch96y7
Well you said it happened after you did a run so it could have jumped.
You mean jump a tooth on the pulleys? Like I said I already checked.
Old 04-20-2014, 09:09 AM
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Default Re: More fuel trouble need insight.

What power are you making on what fuel?

it's doubtful that if one pump failed you'd have this issue, especially during a fairly low fuel volume event like using the 2step. unless of course if a pump failed and it's allowing fuel pressure to bleed back through the pump into the tank. although most pumps have a check valve to prevent this and it is very rare for them to fail
Old 04-20-2014, 09:36 AM
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Default Re: More fuel trouble need insight.

Originally Posted by wantboost
What power are you making on what fuel?

it's doubtful that if one pump failed you'd have this issue, especially during a fairly low fuel volume event like using the 2step. unless of course if a pump failed and it's allowing fuel pressure to bleed back through the pump into the tank. although most pumps have a check valve to prevent this and it is very rare for them to fail

Power is prob around 550 right now e85.

Well here in an hour or so I will start her up.

Hope it's not Somthing major 😁
Old 04-20-2014, 01:49 PM
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Default Re: More fuel trouble need insight.

Ok so redid wiring with correct connector. Same problem

Goes to about 5k and cuts

Changed spark plugs same ****.

Oil pressure and fuel pressure is solid.

Uploaded a different tune. And Pow two steps works fine.

Reloaded other time and pow works fine.

Have yet to road test.

Thoughts
Old 04-20-2014, 03:00 PM
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Default Re: More fuel trouble need insight.

Well just beat the crap out of it on the street and 100/ good to go wtf you all think?
Old 04-20-2014, 03:15 PM
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Default Re: More fuel trouble need insight.

I couldn't run under half a tank with my dual pump setup or it would cutout as well. Also I had fuel blowing through the wires and ruining my milspec plug n play harness. I even sent the hanger back to full blown to be repaired. Kept doing it so I ditched that setup and did an fcs tank and Magnafuel pump. No problems now. Although my sending unit on my tank isn't working.
Old 04-20-2014, 03:58 PM
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Default Re: More fuel trouble need insight.

Originally Posted by grjp1988
I couldn't run under half a tank with my dual pump setup or it would cutout as well. Also I had fuel blowing through the wires and ruining my milspec plug n play harness. I even sent the hanger back to full blown to be repaired. Kept doing it so I ditched that setup and did an fcs tank and Magnafuel pump. No problems now. Although my sending unit on my tank isn't working.


Oh I see, how did it ruin the harness?
Old 04-20-2014, 05:41 PM
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Default Re: More fuel trouble need insight.

It was blowing fuel through the hanger wires and ruining the rubber inside the plug exposing the pins.
Old 04-20-2014, 05:50 PM
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Default Re: More fuel trouble need insight.

humm I replaced all the connectors but had to splice some wires I used solder and shrink wrap so it should be ok im thinking it not a fuel problem but I guess om not sure. seems to only break at the track
Old 04-20-2014, 06:12 PM
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Default Re: More fuel trouble need insight.

Normally heat shrink should prevent anything from entering the splice. I always put dielectric grease on the joint and then heat shrink over it. this forces the dielectric grease around the entire connection and basically insures that it will be moisture/chemical free.
Old 04-20-2014, 07:01 PM
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Default Re: More fuel trouble need insight.

So if any e85/ fuel is getting into my connectors it's will go bad?
Old 04-21-2014, 11:33 AM
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Default Re: More fuel trouble need insight.

are you still on oem fuel filter?

have you flow tested your injectors?
Old 04-21-2014, 11:50 AM
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Default Re: More fuel trouble need insight.

Originally Posted by Charlie Moua
are you still on oem fuel filter?

have you flow tested your injectors?


No I have Russell inline filter,

Injectors are prob 10 months old fic 2145 no haven't had them flow tested sounds like a good idea only possibility is that some of those small black specs. Most likely from cutting the an lines are stuck inside the injector?? Would that make sense for my symptoms?
Old 04-21-2014, 12:02 PM
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Default Re: More fuel trouble need insight.

Originally Posted by $MIKE$
No I have Russell inline filter,

Injectors are prob 10 months old fic 2145 no haven't had them flow tested sounds like a good idea only possibility is that some of those small black specs. Most likely from cutting the an lines are stuck inside the injector?? Would that make sense for my symptoms?
mmmm. not likely. It's gotta be a pretty big piece to do that.

You already know my suggestion. ..
Old 04-21-2014, 03:57 PM
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Default Re: More fuel trouble need insight.

Originally Posted by $MIKE$
So if any e85/ fuel is getting into my connectors it's will go bad?

Any one?


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