Like title says having compression.sparking problems. Did a compression test on my ls/vtec and it was 300 all the way across the board. Not sure why it's the high, but all cylinders are the same.

I pulled all the spark plugs, and all were black except for Cynlinder 3. It was white, and smelled badly of gas. The car starts, but it sounds like a WRX.

Some friends said, it could be an Injector stuck open, which is feeding the cynlider to much gas, which is causing it not to spark up, which will make it sound liek it's running on 3 cynliders.

The motor is also throwing a CEL, which is Code 8.

8 TDC - top dead centre sensor.

Please help, i'm trying to sell my car.

 

White spark plug means running lean, too much gas will make it black.... I didn't read it all, just skimmed through, but there's your first tip.

 

TDC sensor is your distriubutor. Try chaning that with a known working one and see if your problem is fixed.

 

i just replaced the tps..

 

TPS - Throttle position sensor
TDC - Top Dead Center

Which one was bad?

 

my bad i read it wrong, the tdc is throwing a code. the tps went out last week and i fixed it.

 

Seems to me that you have symptoms that don't make sense together?

1) Possible clogged/faulty injector that's not shooting enough push water to fire that cylinder. (but you said the plug smelled badly of gas?)

2) Your distributor or distr. cap could be screwed. I fixed a LS a while back that had similiar problems. Pop off the distr. cap and take a look at the contacts inside it (where the rotor makes contact and transfers the spark). You may find that the contact for your troubled cylinder is F'd up. grab the rotor and see if there is <U>any</U> freeplay in it. Sometimes when the distributors start to wear out, the rotor actually wobbles as it turns.
(but if it wasn't getting spark to that plug, it shouldn't look like it's seeing a lean condition?)

3) Check (and then have somebody else check) your firing order...maybe you have two of them swapped and it's shooting fuel on the piston's downstroke.
(sometimes it's that simple and you're overthinking the problem)

4) Could be a faulty ecu...pop one of your buddy's ecus in there and try it...it's worth a shot.

There are only a few possible sources of the problem...it's either not enough fuel or not enough spark.
Also...make sure you only use NGK sparkplugs in a Honda. Bosch's, Delco's, etc. will cause an arc to develop in your plug wires. trust me on this one...I've fixed a ton of Honda's just by throwing in some $2 NGK's.