im running too rich in only one cylinder, the rest is fine when i look at the spark plugs. the cylinder is number 4, what can cause this? what can i look into?

 

check the injector, probably stuck open/closing slow

 

How can you check your injectors?

 

You can either have it rebuilt or get a new one. Personally I'd get them all balanced or replace them all at the same time.

 

Take the fuel rail out and make sure the injectors stay in the rail. Then turn the key on, the fuel pump will turn on to prime the system and will pressurize the rail/injectors. If the injector leaks gas, it should be replaced.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Runnerdown &raquo;</TD></TR><TR><TD CLASS="quote">Take the fuel rail out and make sure the injectors stay in the rail. Then turn the key on, the fuel pump will turn on to prime the system and will pressurize the rail/injectors. If the injector leaks gas, it should be replaced.</TD></TR></TABLE>

Don't the injectors come out when you take the fuel rail out.

I heard some people use a battery and hook up to the injector for it to open then use presurised air to clean out the internal. I want to clean my injectors also but I'm not sure if this is safe.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blah13 &raquo;</TD></TR><TR><TD CLASS="quote">You can either have it rebuilt or get a new one. Personally I'd get them all balanced or replace them all at the same time.</TD></TR></TABLE>

 

where can i take them to get it balance?

 

The o-rings where the injector goes into the rail will usually hold them in. Sometimes though the grommet that the injectors seats into will want to hold it. A long as you take them out carefully you should be ok. I have done this plenty of times.

 

would having one cylinder running rich, does this turn up an cel for misfiring?

 

If its OBD2 its gonna have a CEL.

 

check your cap, rotor, wires, and plugs too. also check compression to see if it is lower in that cylinder. shame on everyone for not mentioning this

 

my compression is 230 across. i got new wires also.

 

ttt