I do a compression test AND leak down test with every oil change.

I've noticed that the spark plug in cylinder 1 is always a little whiter (leaner) than all of the other ones. I'm wondering if you JG's out there have the same situation?

P.S. I don't think it has to do with an injector failing or anything like that.

Thanks in Advance

 

So you think that cylinder 1 is getting alittle more air then the other?

Interesting, I'd like to know also...

 

Id like to know too. Does anyone have flow data for individual runners? Easily fixable tho, just add 1-2% more fuel to #1.

 

just a bump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">Easily fixable tho, just add 1-2% more fuel to #1.</TD></TR></TABLE>


is that even possible ? i thought hondas were batch fire injectors not sequential.


i think only way you can really get #1 to be richer than the others is get your injectors flow balanced and put the injector that puts out the most CC in #1 . heheh


btw. how are your compression and leak down tests every oil change? im curious how fast engine internals wear out at that sort of HP

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project dc2 &raquo;</TD></TR><TR><TD CLASS="quote">

is that even possible ? i thought hondas were batch fire injectors not sequential. </TD></TR></TABLE>

I have no idea, I got hondata s200b

 

All hondas are sequential.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Arturbo &raquo;</TD></TR><TR><TD CLASS="quote">All hondas are sequential.</TD></TR></TABLE>


but theres no way to modify injector pulse to each injector through hondata right ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project dc2 &raquo;</TD></TR><TR><TD CLASS="quote">


but theres no way to modify injector pulse to each injector through hondata right ? </TD></TR></TABLE>

That is correct. The only EMS that I know of for sure that has individual injector pulse is the Autronic. There may be others systems out there that do also but I do know for sure that Hondata does not have that option. That is one of the reasons why I am running Autronic.

 

AEM can acomodate for individual injector pulses, as well as additional injectors if added.... I believe the AEM can control up to 8 injectors.

 

I had something like this happening when I ran a extrude honed b16a intake manifold but it was always on number cyl #2.

Eversence I switched over to the JG I haven't seen a trace of this anywhere...

 

hmm okay, I guess we'll see if anyone can add to the post.

As far as compression #'s I'm about 210-220 psi across (9:1 C/R) and 3-5% on cylinder leakage. I honestly don't beat on the car no more, I dunno, I think I'm going to get a beater really soon.

FYI: Endyn Built the bottom end & Miller @ NRG Tech did the tune.

 

i have an Extrude honed JG/edelbrock manifold. and havent noticed anything like this. i will pay closer atten. in the future.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project dc2 &raquo;</TD></TR><TR><TD CLASS="quote">is that even possible ? i thought hondas were batch fire injectors not sequential.</TD></TR></TABLE>

The AEM EMS can. I thought Hondata could too. Sorry Fred guess your screwed.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoostedEG6 &raquo;</TD></TR><TR><TD CLASS="quote">

That is correct. The only EMS that I know of for sure that has individual injector pulse is the Autronic. There may be others systems out there that do also but I do know for sure that Hondata does not have that option. That is one of the reasons why I am running Autronic. </TD></TR></TABLE>

as long as you can feed the ecu with a crank signal and a cam sync/ home you can run most ecu in full sequential injection with individual cyl trims autronic, aem, fast, dfi, motec, ect are all capeable of this but in hondatas case you cannot do individual cyl trims.

 

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

FYI: Endyn Built the bottom end & Miller @ NRG Tech did the tune. </TD></TR></TABLE>

Why did they tune it, if your in texas?

 

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

Why did they tune it, if your in texas?</TD></TR></TABLE>

lol, to keep the theives away

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FredoSP &raquo;</TD></TR><TR><TD CLASS="quote">I do a compression test AND leak down test with every oil change.

I've noticed that the spark plug in cylinder 1 is always a little whiter (leaner) than all of the other ones. I'm wondering if you JG's out there have the same situation?

P.S. I don't think it has to do with an injector failing or anything like that.

Thanks in Advance</TD></TR></TABLE>

I think that you should hook up 4 egt to the manifold and see what the degrees difference is.

I think that's how it is with subrau's you would need flow matched injetors to correct the problem or a better intake manifold...

 

I am definitely checking my spark plugs tomorrow.

 

Funny that you mentioned this because I have :

Hondata S200 and the JG Elderbrock manifold and I noticed the same thing a week ago when checking my spark plugs .... Runs out to car to check again.

 

thanks guys, i dunno, and this is with the newer JG one, not the older one.

 

hmmm .. I'm running the original JG/elderbrock with

AEM Fuel RAIL/ 740 cc injectors / stock FPR/ upgraded fuel lines ...

I'm going to warm up my car right now , do a WOT pass , shut the car down immediately and check the spark plugs...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FredoSP &raquo;</TD></TR><TR><TD CLASS="quote">I do a compression test AND leak down test with every oil change.

I've noticed that the spark plug in cylinder 1 is always a little whiter (leaner) than all of the other ones. I'm wondering if you JG's out there have the same situation?

P.S. I don't think it has to do with an injector failing or anything like that.

Thanks in Advance</TD></TR></TABLE>

Have you made 100% sure that the injectors are consistent? You can always label the #1 injector and put it to another cylinder for simple diagnostics. It is much better to do that first before going further into the problem

The AEM EMS and Apexi PowerFC can do individual cylinder fuel trimming.

 

**** just ad 3% fuel across the board , maybe that will help....it cant be too much leaner than the rest.

 

I just finished doing 3 WOT runs and immediately shut my car down ..

I checked spark plugs 1,2 and 3
....

Every cylinder is consistent and good.

I would check your injectors as tony mentioned.