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3000gt running rich and back firing


3kgtjr
03-17-2010, 09:11 PM
Hi I just got another vr4 that is running rich and backfires through the exhaust. I replaced the spark plugs, wires and o2 sensors. I tested for air leaks and I didn't find anything. If someone could help me out it'd be great. Thanks
Stealthee
03-17-2010, 09:24 PM
What year is it? If its 91-93 you need to check the capacitors in the ECU.
3kgtjr
03-17-2010, 09:28 PM
Yeah its a 91 I already checked and replaced the capacitors.. forgot to mention that. But it is still the same.

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