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Old 11-14-2015, 09:09 PM   #1
Eismann
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Member#: 391012
Join Date: May 2014
Location: Lafayette, Indiana
Vehicle:
1997 Impreza L Wagon
Green

Default EJ25D swap: Fuel issue

The fuel issue is that with the injectors plugged in the engine gets flooded while it is on. With the injectors unplugged the engine will still fire but runs really lean (obviously). Injectors and fuel rails are stock but I changed the fuel lines to a parallel setup with stock fuel regulator. New fuel stock fuel pump and new fuel filter. Also new spark plugs and wires.*
I am leaning towards too much fuel pressure or MAP/MAF gone bad.*

As an after thought just now I am using OEM injectors from an EJ22 out of a 97 Impreza L. Possibly the issue since they are not what should be there?

Any ideas would be great.* Thanks.
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Last edited by Eismann; 11-15-2015 at 12:28 PM.
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Old 11-17-2015, 11:46 AM   #2
Patrick Olsen
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Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

You're positive your parallel setup is correct, and the injectors are getting fuel at the correct pressure?

I'm not sure I understand how the engine will still fire with the injectors unplugged. Residual fuel in the cylinders from when it was previously flooded?

I have a set of EJ25D rails and injectors off my old, dead engine sitting here. Actually, the rails and injectors are installed on an EJ25D manifold that was ported by Grimmspeed (back when they offered that service) along with a ported TB. I removed all the hard fuel/vapor lines since they had gotten bent; the only thing on there is the actual fuel rails (where the injectors are). If you want the whole kit and kaboodle, let me know, but I need to know ASAP - I have movers coming tomorrow, so it'll all get boxed up.
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Old 11-17-2015, 12:01 PM   #3
Eismann
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Member#: 391012
Join Date: May 2014
Location: Lafayette, Indiana
Vehicle:
1997 Impreza L Wagon
Green

Default

To answer your first question about the set up being correct; that would be a yes. Spent an entire week planning it and 8+ hours setting it up to make sure it was correct. Your second question is answered already in my OP where I stated I was leaning towards too much fuel pressure or MAF/MAP going bad. But I need to buy a fuel pressure tester to find out.
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