i had a b16a/b18c1 w/itr pistons put in about a month and a half ago...i noticed i burn a crazy amount of oil...i have to put in a quart every 3-5 days, and w/in 3-4 weeks my oil is almost black....a lil black smoke comes out when i gun it...what do i do to fix this???

 

What oil are you running? How many miles are on the motor?

I'd do a compression check, sounds like your rings are toast.

 

it's a rebuilt 99 block...i've put about 3000 miles on the motor...i'm using mobil-1 5w-30 how much does it cost to do a compression test?

 

well it sounds like you dindt break in the engine properly
so a compression test sound good
it is possible that you have damaged your cilynder walls on your new set up

 

u can rent a CR tester

 

how much would that cost you think?

 

check for blow-by! Blow-by is when the piston rings were not correctly installed and oil is seeping into the combustion chamber. I had a similar problem on my first project.

 

You can buy a compression tester at Sears for like $20. Was the motor properly broken in? Try 10w30 too.

 

yeah allmotorjunkie is right...excessive oil consumptions usually indicates worn piston rings either that or they weren't install securely. meaning oil gets pass em and into the combustion chamber and its burned. That explains why u have black smoke coming out of your tailpipe. black smoke means your burning oil somewhere. get that compression test. u can buy a compression tester for like 25 bucks are an auto supply store.

 

If the rings were not staggered properly the compression test will not show a lost of compression.

 

do a leakdown, but as everbody else sayd its tha rings

 

how much do rings cost??? how much will labor run?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SBI 1 &raquo;</TD></TR><TR><TD CLASS="quote">yeah allmotorjunkie is right...excessive oil consumptions usually indicates worn piston rings either that or they weren't install securely. meaning oil gets pass em and into the combustion chamber and its burned. That explains why u have black smoke coming out of your tailpipe. black smoke means your burning oil somewhere. get that compression test. u can buy a compression tester for like 25 bucks are an auto supply store. </TD></TR></TABLE> Correct me if I am wrong but isn't black smoke only when you are running rich??? Oil smoke is blue.

 

sounds like blow-by. I would get a cylinder leakdown tester that will help you alot more than a compression test. If it you do a CLT (cylinder leakdown test) and it blows out the dip stick tube its the rings. hope that helps you

 

if it is the rings....am i hurting my motor even more by driving it daily until i replace the rings? how is cylinder leakdown test performed?


Modified by ek_jeremy at 3:32 PM 9/26/2003

 

yeah thats wat i was thinking is the smoke blue or black...