jonshonda

Ok, I drive a 1997 Honda Civic Sedan w/ a stock D16y7 ( K&N drop in filter is only mod) and altough I get great fuel economy, I have always noticed raw gas in the bottom of the intake manifold when I look down through the throttle body. The only issues are the car has is a bad/ lumpy idle when cold, and sometimes lumpy when at a stoplight when warm. Also, when I let off the accelator, the engine kinda stumbles and does not react directly to the pedal. IT WILL NOT HIT REDLINE EITHER, and only makes it to 5500-6000rpm before it will not rev any higher. I took the throttle body off and cleaned everything I could, but the idle will not level out. Fuel filter just replaced, along with cap/rotor/wires/plugs. The egr valve seems to work ( I pulled the vacuum line and it pulls when cold) and the raw gas is always there!! What to do??


Modified by jonshonda at 10:14 PM 7/20/2008

turbociv910

evap/purge tanks is full

jonshonda

Would that cause a bad idle too?? Or am I looking at multiple problems??

turbociv910

that also, i bet sometimes you tried to topoff your tank, and it fills up the purge tank under your hood.. had that happen a couple times at the mazda dealer ship when i worked there.. fixes everything

jonshonda

I did some searching, and found out I could unplug my purge valve to see if it fixes the idle. Is there any way to clean out the canister??

turbociv910

that would fix the gas getting in the intake, but to really fix it, take it out and turn it up side down (empty it)

delsolcharli

that usually works =P

jonshonda

I don't understand why the drain at the bottom wouldn't remove all of the excess gas!! I did unplug the purge valve this morning, the idle is a lot better, and the throttle response has changed a lot too!!

jonshonda

leaky injector?? FPR??

jonshonda

Also, the lowest I can adjust my idle is 1000 rpm??

blkegcoupe

your idle can go lower than that its suppose to sit at 750 or so depends on a manual or automatic bump helpin this guy out

jonshonda

I know its suppost to go lower, but it WON'T. I followed the procedure in the Haynes manual, and with the screw all the way down, it only idles at 1000 rpm when its suppost to be at 750

jonshonda

Going to check for vacuum leaks. Just replaced the rotor/cap/plugs/wires and it still has a miss!!

thesmogman

How about a leaking injector? Also check your oil for gas smell too it might washing the rings.

Please check quickly! If this is the problem it willl be a major one soon, very soon!

jonshonda

Car is sitting in the garage right now, and I am at work!! I am going to try the injectors next!! I freshened up all the major grounds, made sure everything looked good!!