Terrible One

i bought this car couple months ago, its a 93 civic hatch w/ a jdm obd1 h22a swap. the fuel pump primes loud so i know theres an aftermarket pump in there. right now the car runs really rich, spark plugs are black, and it leaves a black spot from the exhaust on the garage door. part throttle is very hestitant and sometimes the idle is bumpy. im guessing that the aftermarket fuel pump has raised the fuel pressure causing it to run rich at idle and at part throttle. im planning on getting a fuel pressure regulator and fuel pressure gauge soon so im wondering what should the stock fuel pressure be at? also im not sure but are the injectors 290cc or 270cc? thanks for any input.

Terrible One

anybody?

IHateJDM

if its obd1, the injectors are 345 cc's and need to run at 40-45 psi wot (pull the vacuum line off the fuel pressure regulator to simulate wot once you get your guage). Since you didn't do the swap, make sure there is a resistor box wired to the injectors, that's a dead give away that you have the obd1 injectors.

Terrible One

40-45psi at idle and wot or just wot, what should it be at idle?

IHateJDM

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Terrible One &raquo;</TD></TR><TR><TD CLASS="quote">40-45psi at idle and wot or just wot, what should it be at idle?</TD></TR></TABLE>

just wot, it should be lower at idle, probably around 30-35 or so. I used to have a walbro 255 in my car, and the fuel pressure would stay at 45 psi no matter what, and I was running rich at idle. I swapped out for the stock fuel pump and now I idle at 31 psi. My car runs a lot better this way.

Terrible One

hmm, i think im gonna switch back to a stock fuel pump then, thanks

oneludesol

dont do that, it wont help... start by removing the egr valve and block it off, that will lean it out some. you can also check your timing, if its retarded, you will run rich, also get yourself an adjustable regulator. keep in mind that depending on how you have your exhaust set up especially without a cat, you can have some black crap come out when you fire it up, my h22 is perfectly tuned and still does it. i hope this helps, just remember especially with the timing if its still running rich than advance it, put some of that extra fuel to work for you...

Sleeping_H22_DC2

before you fuc with the egr, what ecu are you running ?? you will pull a light for the egr with a p13 just so you know. switch to a p28 with a s100 system base map dyno 400 bucks call it a day not ever worry bout it again !!!
let me know if your in va, tuned $400-450 p28 w/ s100 hondata
my .02 cents
or if you are running that rich go p28 with a fpr set at 53psi you should be good on not leaning out for a while !?!? haha hey man for real just get a s100 system call it a day. because i knwo if you don't you will go get a vafc for soem bling ! haha b

Sleeping_H22_DC2

very true my spits all types of **** out i could of swore a animal crawled up their and died. listen to him ____^^^^^_________up there

Terrible One

running jdm auto p13 and if i recall, this ecu doesnt detect egr. i would never waste my money on hondata but im still gonna try sticking w/ the fuel pump thats in it right now and get a fuel pressure regulator and fuel pressure gauge and see wasssup. 30-35psi for idle and 40-45psi for wot, hope i got that right. and what you guys mean by "hose off", do i take off the vacuum line on the fpr while adjusting the pressure? does that refer to wot also?

IHateJDM

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Terrible One &raquo;</TD></TR><TR><TD CLASS="quote"> and what you guys mean by "hose off", do i take off the vacuum line on the fpr while adjusting the pressure? does that refer to wot also?</TD></TR></TABLE>

yep, when you take the vacuum line off the fpr, the fpr sees atmospheric pressure, which simulates wide open throttle. Always set your fpr while simulating wot, then see what it falls to when you put the vacuum line back on.

v4lu3s

the jdm p13 sure does use the egr.
and at idle with the vacuum tube removed from the FPR you shoud be seeing 36-38 psi.

Sleeping_H22_DC2

Thank you ___^^^^^^^____ see now you have 2 people telling you so. Thanks for trying to correct me. I do this for a living thanx.
Anyways you will pull CEL # 12 i think off the top of my head. Which means hey no vtec, slow and generally running like ****.
Dont' listen watch it run like crap
Anthony

v4lu3s

atually code 12 means nothing to vtec, as the egr system only operates under light acceleration and steady state throttle. the only time it will run like crap is when the egr valve is stuck open.

Sleeping_H22_DC2

Ahh yes with a p13 egr is not connected correctly it will disable vtec had someone last week with is stuck open and fuct wiring.
thanks for your concern
Anthony

v4lu3s

If you want to pass out bad information go right ahead.
According to honda the things that will disable vtec would be:
tach pickup
VSS
ECT
vtec pressure switch
vtec solenoid


If i still had a video camera i would take great pleasure in removing my egr system taking a drive hitting vtec repeatedly.

IHateJDM

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">If you want to pass out bad information go right ahead.
According to honda the things that will disable vtec would be:
tach pickup
VSS
ECT
vtec pressure switch
vtec solenoid


If i still had a video camera i would take great pleasure in removing my egr system taking a drive hitting vtec repeatedly.
</TD></TR></TABLE>

I'll jump in here and agree with you. I used to run my H on a p13 without egr hooked up, and it had no effect what-so-ever on vtec.

v4lu3s

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IHateJDM &raquo;</TD></TR><TR><TD CLASS="quote">I'll jump in here and agree with you. I used to run my H on a p13 without egr hooked up, and it had no effect what-so-ever on vtec. </TD></TR></TABLE>

thanks, that guy was starting to make my head hurt.

IHateJDM

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">

thanks, that guy was starting to make my head hurt.</TD></TR></TABLE>

I know what you mean. Hearing this:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sleeping_H22_DC2 &raquo;</TD></TR><TR><TD CLASS="quote">Thanks for trying to correct me. I do this for a living </TD></TR></TABLE>

followed by misinformation has got to be my biggest e-pet peeve.

v4lu3s

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IHateJDM &raquo;</TD></TR><TR><TD CLASS="quote">I know what you mean. Hearing this:

followed by misinformation has got to be my biggest e-pet peeve.</TD></TR></TABLE>


yeah that kind of got to me since I also work on honda's for a living, am obviously a honda enthusiast...and had techinfo.honda.com open in front of me to the vtec troubleshotting info for a prelude.

Terrible One

before i start searching, anyone wanna link me to "how to remove egr" write up?

ExplicitSpeed360

Just unbolt it and un hook the wiring and plug the vacuum line. I can sell you a nice block off plate I am thinking of selling them I will post it if you'd like...

poison

You can just grab a redbull can, or coke can and make a cut plate for it. You're done.