I just rebuilt my motor and notice black spots on my rear bumper..
The motor doesn't burn oil or smoke..

any idea's?

maybe running to rich?

 

lay off the mota WEY!

 

up

 

probly runnin too rich, but if it was you'd probly be able to see the smoke. u sure its not from heat?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaxsimike &raquo;</TD></TR><TR><TD CLASS="quote">probly runnin too rich, but if it was you'd probly be able to see the smoke. u sure its not from heat?</TD></TR></TABLE>

heat ? from the exhaust.. nope

 

u catless?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hayabusa160 &raquo;</TD></TR><TR><TD CLASS="quote">u catless?</TD></TR></TABLE>

yeah , with a fresh rebuild.

 

Honestly, i would say you are burning very small amounts of oil. Not enough to really hurt anything. I used to get the black coating every week with my d-series, which burnt about a quart every 2 weeks, then my b-series went in with a fresh build i never saw the black crap again.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rjay8604 &raquo;</TD></TR><TR><TD CLASS="quote">Honestly, i would say you are burning very small amounts of oil. Not enough to really hurt anything. I used to get the black coating every week with my d-series, which burnt about a quart every 2 weeks, then my b-series went in with a fresh build i never saw the black crap again. </TD></TR></TABLE>

if my oil level is stable and not dropping , do you think it could be my rings?
from the block before I burned a lot of oil as well as leaked , leaked all over the header and exhaust under the front of the car. Possible it could be the remains of that?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rjay8604 &raquo;</TD></TR><TR><TD CLASS="quote">Honestly, i would say you are burning very small amounts of oil. Not enough to really hurt anything. I used to get the black coating every week with my d-series, which burnt about a quart every 2 weeks, then my b-series went in with a fresh build i never saw the black crap again. </TD></TR></TABLE>

I disagree.

I would say it's probably fuel. My freshly rebuilt motor does the same thing (although I notice no spots on the back bumper, just on the white license plate) and doesn't burn a drop of oil between changes.

 

fuel

 

when i went wit a 2.5 kteller non resonated cat back i noticed the same black spots on the back of the car. so i think its between running rich and lack of filtration in the exhuast. i also go a car sound cat

 

run your finger across it, if it wipes clean and onto your finger it's probably fuel. if it smears/streaks across the bumper, then it's probably oil.