anyone know what could cause this? engine hesitates for a while and shoots black while doing. not good

 

running seriously rich.

 

Running extremely rich(tooo much gas) is the chief cause of black exhaust smoke...

1. stuck open injectors will cause this..

2. Improperly installed o'rings in the injector rail will also cause this issue.

3. possibly a malfunctioning o2 sensor could cause this...(bad wiring also)

4. possibly a bad coolant temp sensor(long shot)(or bad wiring to the sensor)

5.

 

to much gas would cause the hesitation to correct?

 

#1,2 or 5.
5 being ECU injector circuit fried and causing #1.
3 and 4 don't affect the system that much individually to cause obvious black smoke.

 

Yes,an extremely rich running engine is in effect "being choked" by too much fuel in the cylinders..

 

so if its stuck open i must replace?

 

Yes, a bad injector must be replaced...It may be more than one injector though..

Have you or the previous owner replaced any injectors?

 

here is link of idle. it just wont correct itself as of now. injectors too?http://s6.photobucket.com/albums/y21...t=SUC50772.flv

 

not that i know of. even tho they have correct resistance they still mayb bad

 

Yes it is possible to have an injector ohm out ok,but still malfunction..Not likely,but possible..

And yes,a crappy idle can be caused by bad injectors...


Car work sucks huh?

 

any other way to test them

 

i did the individual as well as harness test already

 

Question...

Did your car have this same issue before you replaced the knock sensor,or after?

 

after. i do remember a slight hesitation before but not like this. there was no smoke before

 

when i removed the fuel rails after trying to see what was wrong after k/s replacement i saw that 3 (i think) ports looked wet

 

Did your injectors fall off the work bench also?

 

haha no. i put a bag over them and set them in a sink i did take the front rail to a store to get the hose for the fpr

 

I dunno dude,it sounds like maybe you have done something wrong during reinstallation of all related parts of the k/s job..

But it may also be just a fluke that an injector or two may have failed at the same you done your work...

 

i bought 6 from ebay. they should be in 2morrow

 

? is there anything special in the drivers fender well cause i whipped out the torch to cut my hole for the cia

 

Whoa..... Wtf!?

Well maybe not serious. Just All the wires going to your motor and accessories. I'm a little tempted to quote you in my sig...

 

You might want to remove the d side plastic fender well and check around in there for burnt wires..

Can you post the ebay link for the injectors(just to make sure you bought the correct injectors)

 

Mooze mooze mooze......

 

if they aren't brand new OE/Bosch in the box you are taking a risk.

 

they're not brand new http://cgi.ebay.com/ebaymotors/ws/eB...4805354&rd=1,1
have the wheel off. will update in a min

 

update. took the plastic part from under it and theres nothing there. at least where the hole is. i made sure i missed the harness thats ran beside the battery so no burnt wires.

 

at wot car is fine but only at wot. only problem is gas seems to flow like diarrhea

 

well at least they're only used rather than "rebuilt"
don't forget to lube the o'rings on the way in