I took off the intake elbow the other day and noticed the TB was kinda dirty with this black stuff that i think is carbon. So i got some TB cleaner and cleaned it (did the running engine thing too). Is this normal? I've got about 90K, but i did this about 50K ago.

 

its fine

 

yeah, do it every year. carbon might be from EGR.

 

I've heard using that TB cleaner can harm the spark plugs - any truth to this?

 

I clean my TB about twice a year.
I have never had a problem with fouling spark plugs.

I guess it could happen but I've never heard of anyone having that problem.

 

How are you guys doing it - just like the can says? Are you using the whole can each time?

 

I don't know how much build up you had, but I cam nowhere NEAR using the whole can.....all I needed was like 5-6 sprays and I was good. When you do it put a rag underneath the TB to catch any of the stuff that falls out, and also have someone hit the gas pedal and clean in there too.

 

I didn't use a whole can either, but i did use probably 1/2 a can because i wanted to make sure i cleaned the intake inside as well and do a good job. I throttled it myself from the linkage and sprayed at the same time.

 

Sometimes the carbon builup is from oil pulled out of the passenger side valve cover, into the line that goes to the side of the throttle body. The passage inside the TB runs under the top cover plate, to a port in front of the blades. You might want to take the top cover plate off and see if there is any oil builup in the top of the TB. Some buildup seems to be "normal".

If you have a lot of oil there, clean it out, then check the PCV valve - drivers side of the intake manifold/center - and make sure it isn't plugged.

 

I just used the seafoam deep creep. Sprayed it into my TB. Used about 3/4 can.

 

i just changed out my PCV valve, i will check the under the TB plate too.

thanks.

 

that sig is funny.....man

i read all the other post in the for sale section.