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Help!!! Weird Noise? Knocking? HELP!!! VAFC Question

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Help!!! Weird Noise? Knocking? HELP!!! VAFC Question

Old 11-08-2003, 04:35 AM
  #1  
1.0 BAR
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Join Date: Oct 2003
Posts: 462
Default Help!!! Weird Noise? Knocking? HELP!!! VAFC Question

Well, i just installed a set of 450 cc RX7 injectors and running VAFC for my JDM B16a2 motor in 92 Honda Civic Hatchback. Turbo has not been installed yet. So i'm not boosting yet. Just getting ready for fuel management only. But before i even installed these rx7 injectors everything was fine. So after installing the 450 cc injectors. I took the car out for a spin. Everything runs fine and smoothly while driving, except a noise from the engine. And during idle, everything seems to be ok. Idle seems to be ok during 800. But once i step a little bit on the gas pedal. And i mean very lightly. The car seems to bog a little. And i can actually hear a noise from the engine. Can it be knocking? Actually, how does knocking sound like? How can it be knocking when i'm not boosting yet?

Also, I am not sure if these RX7 injectors are high impendence or low impendence. Can that be it? My car is a 92 Civic HB.

Here's my settings:

Settings:
.....LO: ..... HI:
1k: -38 ..... -38
2k: -38 ..... -38
3k: -38 ..... -38
4k: -36 ..... -36
5k: -36 ..... -36
6k: -36 ..... -36
7k: -36 ..... -36
8k: -36 ..... -36

Could it be that the engine didn't get enough fuel? Let me know guys. THanks!! Apprepicate your help.

Civic4Sale is offline  
Old 11-08-2003, 07:54 AM
  #2  
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Join Date: Mar 2003
Posts: 21,494
Default Re:Help!!! Weird Noise? Knocking? HELP!!! VAFC Question

Those settings seem a bit rich for n/a even though your problem isn't at high throttle. Check your timing. Also, take an ohm meter to the injectors and see what resistance you get. What happens at full throttle?
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Old 11-09-2003, 02:58 AM
  #3  
Tad
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Join Date: Jan 2003
Posts: 422
Default Re:Help!!! Weird Noise? Knocking? HELP!!! VAFC Question

hmm,
well i'm not sure about the knocking,

but about the bogging, it sounds like your probly just
running way too rich. i'd lean it out some personally,
450cc injectors are pretty effing big for n/a

BUT thats just a guess from the info you've supplied.
Tad is offline  
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