Took the header off today and my exhaust runners are coated with a pretty thick layer of dry looking black stuff. So what I'm wondering, if this is because I'm runing rich or is it oil being burned? I only have 3000 miles on the rebuild and it seems to run strong. For the first 20 miles on my engine, I know that I was running really rich, but would the residue still be there? I assumed it should of been burn't off by now. As of right now, I burn a bit of oil, but that may be because I drive my car pretty hard... i dunno :shrugs: Here's some useful info:

Tued Hondata w/440cc injectors
Fuel pressure @ 44psi at idle
Intake cam +4 deg.
Exaust cam + 2 deg.
Last compression check at 1000 miles showed 200-220 across the board
I forget what my timing is at, I'm gonna check it after I get the header back on.

Edit: No codes are being thrown right now.

 

its normal to have carbon on the exshaust ports yes its gonna be there if ur runnin rich and its just built up

 

am I running too rich if there's a caked on layer after only 3000 miles? do you think I should turn down the fuel pressure or get the car retuned?

 

cant avoid it. But when ever i remove my header for cleaning or if im working on it. i hit up with some Sea Foam Deep Creep. its a spray can version of sea foam. comes right off

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMlyfestyle &raquo;</TD></TR><TR><TD CLASS="quote">cant avoid it.</TD></TR></TABLE>

cool, thanks for the replies guys at least i know that something isn't wrong with the engine.

I think i'm gonna try the Sea Foam since it's apart.

 

i just do it cause im a complete neat freak. and i have nothing better to do with my time..lol