2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Running EXTREMELY rich!

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Old Oct 31, 2006 | 12:08 PM
  #1  
tIIsleeper's Avatar
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pp
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From: Central Massachusetts
Running EXTREMELY rich!

I just finished an engine swap on my 87 t2. The engine i put in had compression of about 90 for both front and rear (better than the blown engine that came out :P).

I have the racing beat turbo back exhaust and a 255lph walbro fuel pump. THATS all for engine mods. Im running very rich, like 10 mpg rich and blue smoke when i floor it.

Im not sure what im boosting since i dont have an operating guage but im guessin its around 10psi.

What are some components that might be bad that make it run really rich? I just want a list of all the possibilities. I know it needs a rebuild but it runs fine for now, just wastes gas. Thx.
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Old Oct 31, 2006 | 01:00 PM
  #2  
The Wankler's Avatar
FKITALL
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From: Dublin Ca.
anything to control the 720s?
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Old Oct 31, 2006 | 01:00 PM
  #3  
rx7 FC TII's Avatar
Semper
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From: Alabama
its the Fuel pump that is making you run rich...i believe(dont quote me) i also run rich due to that same pump.....buy a Fuel pressure regualtor or a piggyback fuel system or stand alone system and control it....
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Old Nov 1, 2006 | 12:21 PM
  #4  
tIIsleeper's Avatar
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pp
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From: Central Massachusetts
I dont have 720's in the car atm because i didnt have an rtek or anything. I dont think its the pump because the stock 550's would limit the flow but I may be wrong. Any other ideas?
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