hey everyone i just did a compression test on my LS........ first i pulled the plugs and noticed that they have a green tint to them?? does that mena coolant??? and then i started doing the comp test and heres the numbers:
1: 160
2: 140
3: 130
4: 160

do you guys think this could be a blown head gasket?? arent these numbers pretty low??? i hate my car right now!
thanks for the help guys and gals!

 

bump

 

look in your coolant, is it creamy?

 

no it doesnt look creamy it looks normal....... and i dont see any coolant in my oil.... and on my crankcase vent where the hose goes into the intake off of the valve cover, i dont have anything on there and when the cars on it blows out oily air.... is this normal??? thanks

 

Are you sure your compression-testing skills are up to par?

 

oil coming out the valve cover breather means you have blow-by or worn rings, i think.

 

dustin: ive done it a few times before... im pretty sure im doing it right..... i take out all pugs and i undid my fuel injector clips(since i couldnt find the fuel pump fuse) screwed the comp tester in and floored it and cranked it over about 5 times..... checked the comp, cleared it and did it again.... tested 3 times per cylinder and posted the highest numbers.

and oily air coming out of there is blow by or bad rings for sure?!??! NOOOOOOO
thats very bad news! is there any way i can fix this with out replacing my rings??

sometimes i really wonder why i love cars soo much!

 

ttt

 

make sure the car is warm during the compression test.

second, you have oil residue or smoke coming out of the valve cover breather, I am betting you have a blown rings and your compression will be way lower than the rest, for example on my car was 210 210 210 and 90. I cracked the ringland

and no, you need to pull the head, pistons and rods to repalce the rings

 

yah i let it idle until it was warm in my driveway for a few minutes when i tested it.... is that long enough??? and this is OT but how do i bleed the air from my coolant?? and if my ring are bad ill just tear this block down and build it.... but god damn it!! is there a way to check to see if my head gasket is blown for sure?? and what pistons could i put in my b18a??

 

for b18 a, any be series pistons will work...depending on your bore size....unless you;re staying with stock bore ( 81mm)

to bleed the air from coolant....let the car idle with the radiator cap off....you'll see buble coming out of it...and let it idle until the fan comes on at least twice. then fill it up and fill the reservoir as well and put the cap back on

my next sugegstion is to do a leakdown test to see how bad you're leaking...
any shop with a leakdown tester and an air compressor can do it..pay them 20 bucks or so...

change the oil and coolant and re-check again if there's any coolant in the oil and vice versa..

stan

 

cool.....thanks a lot for the help!!! i ma going to go drive my car around for a little while make sure it gets all the way warm then recheck the compression..... but first im going to add more coolant..............

is there anyway to check if my headgasket is blown for sure????
thanks again!

 

One way is to see if you are filling the coolant overflow tank. That is how I knew mine was in bad shape.

 

Is this true??? i have some oil vapor that comes out of my valve cover breather, very little and barely noticeable.

-deepsi

 

ok i think my rings are blown!! damn it........ im gonna pull it apart sell my little greddy turbo and do LS/vtec........ i can get a b16 head that has 3 angle valve job, p&p and some other stuff for freee since he owes me money and he'll replace my pistons for free and me and him will do the swap. damn this sucks! i really wanted to go with a new t3/t04e turbo but now i cant afford it after fixing the rings and stuff!!! ggrrrrrrrrr
maybe it was never meant to be!

 

it has to be excessive to be a major blow by....it's normal to have a lil....
check the compression adn leak down, that'll tell you for sure if you have a problem...

 

i am scared to do it i hate bad news

 

other than the 130 and 140, those #s are better than the #s i got when i did my compression test last year.

 

i am going through similar issues... hope everything works out...

 

yah i decided to sell off my little greddy kit and throw new psitons in and go LS/vtec i got a head from my firend for free so everything will be cool.

 

Sounds like the ring landings too me. I had the same thing happen. Why is it that #3 is always the worst??

 

yeah im going through the same stuff now, im doin it right this time with some forged pistons and total seal rings. i dont want to do it again.

 

hahaah yah i feel yah!!! i dont want to go threw this bs again!

 

well..i think u WILL be doing it again with those rings...as anyone here can attest...TOTAL SEAL SUCKS!