What causes most when prelude running on rich..?

 

i read that preludes are tuned to run a little rich from the factory because the engine revs so high for such a large displacement motor that the extra fuel is needed to keep things from getting too hot in the combustion chambers.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BB6racer &raquo;</TD></TR><TR><TD CLASS="quote">i read that preludes are tuned to run a little rich from the factory because the engine revs so high for such a large displacement motor that the extra fuel is needed to keep things from getting too hot in the combustion chambers.</TD></TR></TABLE>
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i would rather run rich then lean

 

as long as your not too rich

 

cuz im having multiple misfire and I read the manual and in my understanding it might be the cause. sucks man, i could not firgured it out

" I read the service manual on what cause or how to fix misfire / check engine light on.
Wires are ok, changed plugs but vavles r ticking little bit. Changed one of the injectors but still did not help or solve my shitty problem. Also when i pulled out my fuel rail along with the Injectors i found some black powdery sh*t around the injector hole/well. Is that a bad sign? what are those black sh*t?

I just bought this car and the previous owner did something stupid on this. I also notice that the dizzy got adjusted cuz there's some mark on it like a scratch line.

Now, some say that OBD2 does or dizzy is not suppose to be adjusted cuz of the crankshaft sensor?

I really need help guys.. How do I put the original setting of the dizzy? Do i need to put that service check connector and adjust it? Some guy in the forum say he adjusted his dizzy but by the time he pull the service check connector it went back to same problem on his timing.

Is the misfire problem i have right now has something to do with this incorrect adjustment? Everytime I reset the ECU it comes back on ONLY when i start the engine in the morning. In other words, when engine is cold. Burns oil too, they said it's cuz of the VTEC sh*t?

NEED HELP! HELP! HELP! HELP! HELP! HELP!

 

I cant remember the size of the injectors on stock ludes. I think its around 350cc or 345 cc's. somthing in the duty cycle needs to be changed i think. However I think with a good tune.. fuel managment, this can be corrected.

 

I replaced one of the injector cuz i thought it was bad. the cel turns when engine is cold after i reset ecu.. i think lude only has 290cc.

 

have you read the code yet?
Thats the first sep.
if you want to set the dizzy bad to spec get a timming light.
If your car is burning oil out the exhaust thats not because of VTEC.
Vtec burns oil in the crankcase.

 

i got new header and cat back exhaust. I checked the catalytic converter and it was good.

 

code was PO300 something like that and says, multiple misfire

I got aem fuel and fuel pressure and gauge. pressure is around 30-35 psi.

 

let me know when you figure it out b/c i been running hella rich ever since i swapped. my white rear bumper is not 2 toned black/white haha

 

do you have your CEL lit? I don't know man im getting tired of this. Thinking about selling this shitty VTEC. It runa fine though..

 

no no cel here just rich

 

u lucky.. im not