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#1
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Why one bank is running lean other rich
I think I have a bad injector but would like advise, Left bank is really lean and the O2 sensor keeps giving error even when changed. Right bank is flooding. Every now and then the car is missing down low and as you speed up then all of a sudden it takes off. Just like an injector is sticking on.
Any suggestions will be appricated. Tony
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX. 1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC) 1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car. 1995 - SVX Green low k mint condiation. 1995 - SVX Rally car, ex Matts car. Now to be used on track. 1992 - SVX red & Black being converted to Mid Engine. 1995 - SVX Red 143,000 bit rough. Owned 5 others Subaru back to a 1974 1400 GSR. |
#2
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Re: Why one bank is running lean other rich
Is it possible that the wires for the O2 sensors are crossed over: Left to Right and Right to Left?
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Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II |
#3
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Re: Why one bank is running lean other rich
Hi Tony i have seen in turbo libertys that there is a inherent design flaw that allows one side of the engine to get less fuel than the other, because the releif valve is one the end of the circuit on the engine one cylinder runs out of fuel and goes lean usually killing the piston, they cure that by making parallel fuel rails with inlets on each side, this is usually for higher hp engines or there could be a problem with your pump?
cam
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SVX , XV Impreza, H6 Outback |
#4
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Re: Why one bank is running lean other rich
Try running a tank or 2 of TECHRON injector cleaner, they sell it at Walmart, Advance Auto etc. It has worked wonders for me a few times.
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#5
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Re: Why one bank is running lean other rich
When was the last time you peeked at your precats?
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"The things you own end up owning you. It's only after you lose everything that you're free to do anything." 92 Pearl White Ls-l (138k) Euro Headlights & Blinkers, 97 Grill, Euro Tail Lights, SS Brake Lines, Stebro Exhaust, Slotted Rotors, Classic Registration 96 Legacy Outback (206k) 5-speed 2.2 Lightweight Crank Pulley, Group N Trans & Motor Mounts SOLD Wanted: Steering Wheel |
#6
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Re: Why one bank is running lean other rich
Install a fuel pressure gage in between the filter and the engine. Fuel pressure should not drop with the ignition off. I'd suspect lower o-rings before the injectors themselves(unless you are trying to use the known clogged injectors).
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#7
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Re: Why one bank is running lean other rich
No Cats. Michael I think you are right about lower o ring. I will try the pressure guage (its not know blocked injectors). I will check some of the other suggestions as well.
Tony
__________________
1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX. 1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC) 1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car. 1995 - SVX Green low k mint condiation. 1995 - SVX Rally car, ex Matts car. Now to be used on track. 1992 - SVX red & Black being converted to Mid Engine. 1995 - SVX Red 143,000 bit rough. Owned 5 others Subaru back to a 1974 1400 GSR. |
#8
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Re: Why one bank is running lean other rich
Tony, did you figure out the problem with the fuel, as described in this thread?
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#9
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Re: Why one bank is running lean other rich
Sorry didn't see the question,
Yes it was old age with injectors, I replaced them and all the carzy code problem on O2's went away as well. Interesting thing it was amazing how much power increase I got from changing the injector. I had a old set that came from Mike and when I installed them only a couple were working. Poured injector cleaner in the tank and slowly over the next 2 days they all cleaned up and fired up. Was pretty funny driving around for 2 day on 3 cyclinder with the other 3 deciding to run at random. Goes like a stung cat now. Have a great day. Tony
__________________
1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX. 1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC) 1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car. 1995 - SVX Green low k mint condiation. 1995 - SVX Rally car, ex Matts car. Now to be used on track. 1992 - SVX red & Black being converted to Mid Engine. 1995 - SVX Red 143,000 bit rough. Owned 5 others Subaru back to a 1974 1400 GSR. |
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