thebleek

cylinder __ tested at....

1 120
2 wont build anything
3 150
4 140-145

so does that mean there is a problem with how i put the head gasket on? what could this mean?

my symptoms are high idle and a tapping noise..what do i do

thebleek

i didnt pull the injectors or have it at WOT is that going to make a dif?

ill go retest right now and see if its any dif

CTR_B

iTrader: (1)

Yes WOT doea make a difference, Not in your case of the cyl with no compression but it just makes the numbers higher.

Its not higher that you should look for first, It consistency. Like for example 200 195 200 200. I think that as long as there in a 10psi difference your good. After you look for consistency then Second comes the how high the number is its self.

I belive all B series vtec motors are in the 200's oem
G.L

thebleek

now its

180
180
0
130

thebleek

my motor is a d16y8 with a y7 head on it.

one cylinder isnt even building compression!?

wtf do i do

thebleek

ok so i poured oil down the cylinder with no compression. i used a cap full of fresh oil. well it made no difference so that means its cylinder head or head gasket related right?

CTR_B

iTrader: (1)

Well if its building no compression at all I would bet my money on the head.

Seeing your going to have to take the head off again to try another H/g do this.

With the head off, set it on one of its sides so that the ports are facing up and the valves are facing you. grab a glass of water and slowly poor it into the port, While pooring the water in the port check to see if any water is leaking out between the valve head and the cyl head its self. After your finished with that Port repeat the process with every Intake and Exhaust port.

If any of the valves leak water it will explain and let you know that you have to replace your valve seals and guides.

G.L

thebleek

wouldnt some leak because it would be on their comp or exh stroke?

im about to go smoke a blunt or a bowl, and pull the head. anything i should look for? could you describe exactly the thing with water. im not dumb, i just cant visualize it

thx for the help too btw


Modified by thebleek at 10:07 PM 9/12/2008

thebleek

bump

thebleek

i know somebody has to kno

CTR_B

iTrader: (1)

no nothing would hapen like that because of the compresion stroke... forget all that lol.

take the head back off and come back to us. I will walk you through it

jadziasman

Don't rule out a hole/huge crack in the crown of the piston or a burn through the ring belt from knocking combustion.

CTR_B

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jadziasman &raquo;</TD></TR><TR><TD CLASS="quote">Don't rule out a hole/huge crack in the crown of the piston or a burn through the ring belt from knocking combustion. </TD></TR></TABLE>

He put oil in the cyl and it stayed there, And still didnt build compression.

thebleek

im going to go label all the vac, fuel, and coolant hoses....altho i should already have them memorized

and then ill be back. ill be back in like 45 minutes i think

CTR_B your my man! thanks pimp for all the help

CTR_B

iTrader: (1)

I dont understand what your doing. In order for the water test to work you need to have the head off the engine.

I am willing to work with you and help you with your ride but you have to be clear on what your doing so I know how to help

thebleek

oh ok, i have the Y8 head that i orignally removed the head..due to the tapping noise.

now what do i do with the water? does the head need to be TDC before i pour some water in?"

....i was a little mixed up, i thought you meant pouring water into the y7 head that had 0 compression in cyl2 lol

CTR_B

iTrader: (1)

Yes the head that had 0 compression in Cyl2 is the head were doing this with as its the head you want to use on your engine right?

Take the head off the engine and remove the intake manifold, Set it some where you don't mind if you spill water. Were just going to use the Sink as an example but anywhere works. Now that you have your head and manifold off and it's in a good area lay it on its side so that the valves are facing you and the intake or exhaust ports are facing up. Slowly poor water into each (intake or Exhaust) Runner, Watch and see if any of the water that you are pooring in is coming out between the valve and the combustion chamber (part the valves go into). If no water comes out then stop and go onto the next port. If water does come out us a sharpy(marker) to mark which valve it is that is leaking so that you can show you machine shop which valves need work as they will know what to do. Do this for every intake and exhaust port on the head.


This is a method of "leak down testing" all though it does not tell you the %ratio of your leak it does tell you that you have a bad valve and that you need to repair it before reasemble

-JSpecEk*9-

time for a new motor. plan and simple

thebleek

i wonder how much a valve job would be?

any ideas?

not so much time for a new motor, as it is time for a new head

also the head with the 0 compression i dont want to use.. i want to use the y8 head i have that is tapping. sounds like a lifter.

-JSpecEk*9-

why a new head? if your not building compression from the cylinder then why are you putting a new head?

thebleek

dude. read the whole thread before you make comments.

-JSpecEk*9-

dude. just trying to help out.dude

thebleek

then try to help without spreading misinformation.

some other person could be having my problem and instead of swapping heads they order a new motor...because they thought thats the right thing to do...

kna mean?

-JSpecEk*9-

thats not misinformation anyone in a shop would do a compression test first

CTR_B

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by -JSpecEk*9- &raquo;</TD></TR><TR><TD CLASS="quote">thats not misinformation anyone in a shop would do a compression test first </TD></TR></TABLE>

Once again Some one must tell you this, You not reading the whole thread. The guy did a compression test, How else would he know there is no compression in cyl 2?

Stfu and go read the whole thread before posting