ECU Tuning & Fuel Management Discuss electronics and related components within.

WAY too rich.

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Old Apr 6, 2008 | 02:46 PM
  #1  
roundyround's Avatar
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Default WAY too rich.

i wish the above statement were true when it came to money.

I have a 95 civic race car, that i bought completly built (cage and all) but it had never been raced.

the car has a fuel delivery issue. it runs really rich, so rich that infact raw fuel comes out of the exaust pipe.

during the build up, the MAF sensor wires were cut, so there is no sensor. my question is, could this be my ENTIRE problem?>

what are my options for a carb intake (im pretty old school)

also, if i converted to a carb, could i completly omit the computer all together, or does it still need to be there for the ignition (keep in mind its a race car, so the computer is not needed for any accsessories or anything like that)
 
Old Apr 6, 2008 | 04:50 PM
  #2  
roundyround's Avatar
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Default RE: WAY too rich.

i just got the numbers of the block.
stamped:
D16Z6
3850026
Cast:
HA

the guy i bought it from siad it was a non-v tech JDM, but i dont know, I also know that some of these motors had a MAF and some didn't, is this motor supposed to have it?
 
Old Apr 13, 2008 | 09:46 AM
  #3  
jamned's Avatar
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From: Los Angeles, CA
Default RE: WAY too rich.

Wow. I suppose your car doesn't need your ECU, but you're already running without several fuel control sensors. Your O2 sensor seems like it's useless, regardless of whether it's connected to your ECU. Fuel-injected ECUs use the O2 sensor to control how rich/lean your mixture is. My 87 civic (D15A2, carbureted from the factory) uses a complex vacuum system to control fuel/emissions. While you could do without some of these systems, the symptoms you're describing are probably a result of no fuel control.

I would uh...get rid of this car or not buy it if that's possible.
 
Old Apr 14, 2008 | 12:06 AM
  #4  
jamned's Avatar
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From: Los Angeles, CA
Default RE: WAY too rich.

okay, so your engine isn't carbureted yet. Good. Try replacing your MAF wires. Your ECU should use either a MAP or MAF sensor to determine how much air is going into the engine. Once it knows, then it can determine how much fuel to inject. If you have MAF wires, then your ECU is expecting a MAF reading to know how much fuel to deliver. Without the MAF, your ECU might just be running in a failsafe mode.
 
Old Apr 17, 2008 | 07:26 AM
  #5  
NorthWestPerformance's Avatar
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Joined: Apr 2008
Posts: 21
From: Spring Grove, IL
Default RE: WAY too rich.

The MAF/MAP needs to be hooked up, without that, you might as well push the car down the track. That is the main sensor that measures vacuum/engine load and the ecu will determine how much fuel to dump in. That is your entire problem.
 
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