Ok no one else is helping me in any other forums. I trust the opinions of people in this forum more anyway.

Heres my issue. Just swapped in a completely stock LS. the exhasut setup is kinda rigged so lets just say im running open header for now. No o2 sensor. Throwin a CEL for o2 sensor (CEL 41). Have checked and rechecked the timing and a swear it is as on as it gets. Car is DUMPING fuel, literally, it stinks like gas an plugs (brand new) are soot black.

Here is a video to assist (20mb): http://www.artfunction.com/MVI_5272.avi

So far i have replaced spark wires, replaced dizzy, replaced battery, replaced injectors, replaced plugs. WTF someone help me, or point me int he right direction PLEASE.

This is my DD i need this thing working prono! TIA

 

What are you running for a computer? Stock? I have driven with no o2 and it ran fine, but it is possible to get into limp mode. Is 41 your only CEL? Did you have to do any hacking of the harness? Have you taken it out, see if it gets smoother or not?

 

what size injectors are you using?

odds are your stuck in open loop mode with no 02 sensor.

 

no o2 sensor at all is attached, yes i am throwing a code 41.

Running the stock LS ecu and the stock LS injectors, then i swapped in my cx injectors and no change.

Would no o2 really make it run this bad? it is really dumping the fuel, brand new injectors were soot black after <3min of running. PITCH SOOT BLACK like i never seen before

 

no o2 sensor will cause it to run richer, but dont think THAT rich, try swaping injectors, might be stuck open.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dual Cam Racing &raquo;</TD></TR><TR><TD CLASS="quote">try swaping injectors, might be stuck open.</TD></TR></TABLE>

thats whay i thought it was too, swapped the cx injectors for the ls injectors and runs exactly the same

could the plugs be fouled already cause it was so rich?

 

although unlikely, check fuel pressure

check cam timing

 

try putting the o2 sensor back in see if it clears it up, if not then there is something not giving enough spark to burn it, is that the ONLY code your throwing?

 

yeah i have checked the cam timing and it is as close to dead on as it gets, a tooth either way only make it more off, it almost seems like its a half a tooth off ill try and get some pics of it, ive redone it twice now! but hey u never know

 

do you have a timing gun? also, did you do anything with the wiring on the car? if you have a noid light, that would help greatly as well. my guess is that an injector is stuck, but you said you swapped them and the same sit.? the only other thing i could think of is try and swap computers with someone with a working ls. open loop will not make your car run like that...i think either you have an injector problem, vacuum leak/problem, or a wrong/bad computer. up for answers

 

ill try to find a computer, im gonna get new plugs from the store, im just leaving them gapped at .040 is that correct for the LS engine [stock]?

i have my stock cx computer... will that run the engine better than this at least for testing purposes.. or will it be leaner cause its for a smaller engine?

 

ok i got it running alot better but it still runs kinda like a race car. There is a leak in the exhasut where the header meets the cyl head and where the header meets the exhaust system- would these leaks make it idle poorly?? It basically sounds like a v8 when its idling, but if i rev it up it sounds pretty good (aside from being a bit loud) im lookin for a new header to remedy the situation

are all bseries headers the same? b16/b17/b18?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime &raquo;</TD></TR><TR><TD CLASS="quote">ok i got it running alot better but it still runs kinda like a race car. There is a leak in the exhasut where the header meets the cyl head and where the header meets the exhaust system- would these leaks make it idle poorly?? It basically sounds like a v8 when its idling, but if i rev it up it sounds pretty good (aside from being a bit loud) im lookin for a new header to remedy the situation

are all bseries headers the same? b16/b17/b18?</TD></TR></TABLE>yea all the headers are the same.

 

would a header leak at the exhasut and at the cyl head cause it to kinda stumble on the idle a bit? it idles fine most of the time and then every like 2min, kinda chugs u know..... like a race car/v8

then again it is pretty much open header what do u think? still running rich but not insane like before, i think the o2 will fix that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime &raquo;</TD></TR><TR><TD CLASS="quote">would a header leak at the exhasut and at the cyl head cause it to kinda stumble on the idle a bit? it idles fine most of the time and then every like 2min, kinda chugs u know..... like a race car/v8

then again it is pretty much open header what do u think?</TD></TR></TABLE>May have toasted a valve. But prolly not, give your vacuum lines a once over and make sure all is well.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZacCarter &raquo;</TD></TR><TR><TD CLASS="quote">yea all the headers are the same.</TD></TR></TABLE>

How are they all the same. I really don't think they are. You can't put a B16/B17 header on a LS or GSR. Atleast last time I tried, I couldn't..

 

yeah its not leaking that bad to toast a valve i dont think, how would u now if a valve is toasted?

ill double check the vac system, its sounds like my brothers cx did when the 2nd part of his 2pc header completely came off

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93turbo16 &raquo;</TD></TR><TR><TD CLASS="quote">How are they all the same. I really don't think they are. You can't put a B16/B17 header on a LS or GSR. Atleast last time I tried, I couldn't..</TD></TR></TABLE>

yeah i think i have a b16 header on mine cause it didnt fit the studs well at all and i had to bolt it down to get it to sit flush

 

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

yeah i think i have a b16 header on mine cause it didnt fit the studs well at all and i had to bolt it down to get it to sit flush</TD></TR></TABLE>

I would almost say that is your problem. It has to be right up against your oil pan.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93turbo16 &raquo;</TD></TR><TR><TD CLASS="quote">

How are they all the same. I really don't think they are. You can't put a B16/B17 header on a LS or GSR. Atleast last time I tried, I couldn't..</TD></TR></TABLE>
b16's have a shorter block than an ls or gsr and a b17 is essentially a stroked b16 so it has a shorter block too. i think the difference is only a few cm's tho and i wouldn't think that it would such a difference as a b16 header wouldn't fit on a ls/gsr, however the other way should work fine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CivicVX94 &raquo;</TD></TR><TR><TD CLASS="quote">
b16's have a shorter block than an ls or gsr and a b17 is essentially a stroked b16 so it has a shorter block too. i think the difference is only a few cm's tho and i wouldn't think that it would such a difference as a b16 header wouldn't fit on a ls/gsr, however the other way should work fine </TD></TR></TABLE>

I can tell you from experience, the B17 header doesn't fit a Ls/Vtec with Ls pan.

I know the differences, just stating what I have had happen in the past. And a tight fitting LS header won't clear a GSR pan either. There are many combinatinos which can make things a pain.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93turbo16 &raquo;</TD></TR><TR><TD CLASS="quote">I can tell you from experience, the B17 header doesn't fit a Ls/Vtec with Ls pan.

I know the differences, just stating what I have had happen in the past. And a tight fitting LS header won't clear a GSR pan either. There are many combinatinos which can make things a pain.</TD></TR></TABLE>yea thats right

 

update:

so it ends up the cam timing was off like 3 teeth on both sides...

Fixed that problem and redid the valve lash and car is running MUCH better now

Its throwing a code 9 (cylinder position sensor) so im gonna swap the distributor right now and see if that fixes it