CB7Tuner Forums

Go Back   CB7Tuner Forums > Parts & Performance > Technical

Reply
 
Thread Tools Rate Thread Display Modes
Old 10-06-2017, 06:18 PM   #41
wtfisafleek
CB7tuner Member
 
Join Date: Sep 2017
Location: Mesquite, TX
Posts: 115
wtfisafleek is cool... so far.
I'd say check the compression in all 4 cylinders to see where they're at. From the sound made and the ease you're turning the motor, it seems like you don't have compression in any of your cylinders.

If that's the case, might need to pull the head back off and reassess what's going on. Maybe they installed your guides incorrectly or even the wrong ones; or they didn't make sure your seats were cut right and the valves aren't closing fully.

Definitely do a compression check before you do any of that.

What head gasket did you use?

Last edited by wtfisafleek; 10-06-2017 at 06:20 PM.
wtfisafleek is offline   Reply With Quote
Old 10-07-2017, 12:58 AM   #42
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
leak down test

ok im am going to do a leak down test tomorrow as soon as im out of work and will let you guys know what i find out
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-07-2017, 01:00 AM   #43
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
Quote:
Originally Posted by wtfisafleek View Post
I'd say check the compression in all 4 cylinders to see where they're at. From the sound made and the ease you're turning the motor, it seems like you don't have compression in any of your cylinders.

If that's the case, might need to pull the head back off and reassess what's going on. Maybe they installed your guides incorrectly or even the wrong ones; or they didn't make sure your seats were cut right and the valves aren't closing fully.

Definitely do a compression check before you do any of that.

What head gasket did you use?
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-07-2017, 03:20 PM   #44
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
leak down test results

https://youtu.be/EbyoSSEeMIk
at TDC you can hear it coming out of cylinder #3
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-08-2017, 02:45 PM   #45
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
leak down test redo

https://youtu.be/EDn-gZnxKbI
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-08-2017, 03:01 PM   #46
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
so i did the leak down test on cyl 4 as well and it coming out the intake a well still leading me to some with the head gasket becuse cyl 3 has the intake valve open
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-08-2017, 03:49 PM   #47
wtfisafleek
CB7tuner Member
 
Join Date: Sep 2017
Location: Mesquite, TX
Posts: 115
wtfisafleek is cool... so far.
There's no designed circuit for gas to flow from cylinder #1 to #3, so that's definitely weird. If you didn't have a torque wrench to accurately tighten those bolts, I'd say get one and do it. In theory it seems unlikely that this would be the cause but at least you can rule it out.

Did you mention if you did a proper valve lash adjustment? How did you reinstall the rocker assembly? Did you back off the adjusters a little before reinstalling? If you didn't take care to make sure all the rockers were precisely in place before torquing the assembly in place you can get something out of whack.

Here's one of Eric the Car Guy doing a valve adjustment on a slightly newer Accord. Same process though. https://www.youtube.com/watch?v=P7wI4EtZSaA
wtfisafleek is offline   Reply With Quote
Old 10-08-2017, 03:57 PM   #48
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
ok yeah ill definitely try that and no i didn't touch the valve lash so ill def check them
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-15-2017, 10:56 PM   #49
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
so got time to torque the head bolts they where all torqued and its still coming out the intake
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-16-2017, 12:36 AM   #50
wtfisafleek
CB7tuner Member
 
Join Date: Sep 2017
Location: Mesquite, TX
Posts: 115
wtfisafleek is cool... so far.
That's weird that this is happening right after a head rebuild. Did you do a valve check? Really they wouldn't have to be spot on, you'd just have to make sure they're close.

Did you ever take the rocker assembly off? Sounds like maybe it's bound up and not allowing one or more of the valves to close. But it appears your crank turns easy all the way around.

What all was done to the head? Were seats cut? Valves replaced? If the head was refinished and assembled correctly and you put it on the block w/o the rocker assembly, the combustion chamber is essentially in its own atmosphere separate from our own. No air would be able to go in or out without a rocker actuating a valve. I think either a rocker or rockers are being held open, or the head was not assembled correctly.

Just to be clear, with the spark plugs all installed, is it super easy to turn the crank?

Last edited by wtfisafleek; 10-16-2017 at 12:43 AM.
wtfisafleek is offline   Reply With Quote
Old 10-16-2017, 03:18 PM   #51
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
Quote:
Originally Posted by wtfisafleek View Post
That's weird that this is happening right after a head rebuild. Did you do a valve check? Really they wouldn't have to be spot on, you'd just have to make sure they're close.

Did you ever take the rocker assembly off? Sounds like maybe it's bound up and not allowing one or more of the valves to close. But it appears your crank turns easy all the way around.

What all was done to the head? Were seats cut? Valves replaced? If the head was refinished and assembled correctly and you put it on the block w/o the rocker assembly, the combustion chamber is essentially in its own atmosphere separate from our own. No air would be able to go in or out without a rocker actuating a valve. I think either a rocker or rockers are being held open, or the head was not assembled correctly.

Just to be clear, with the spark plugs all installed, is it super easy to turn the crank?
i got all new valves and whhen i had the head off i had cleaned it with a wire wheel and scotchbirte pad. and i cleaned the block with a wire wheel and scotchbite pad as well. they where really bad because i had a bad valve stem seal and it was really bad in side ill post some pics of before and after if it will help some
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-16-2017, 07:47 PM   #53
wtfisafleek
CB7tuner Member
 
Join Date: Sep 2017
Location: Mesquite, TX
Posts: 115
wtfisafleek is cool... so far.
Well it failed your leakdown right? If that's the case, I think the head needs to come off and its valves' sealing checked. It might be a good chance to double check your assembly procedures.
wtfisafleek is offline   Reply With Quote
Old 10-16-2017, 08:32 PM   #54
sonikaccord
Contributing Member
 
Join Date: Nov 2005
Location: In Traffic
Posts: 4,037
sonikaccord seems to have made some friends!
Ahhhh. Ok it sounds like your intake valve isn't sealing for cyl #1. Is that the same situation for the rest of them?

If you do the leakdown test without the rocker assembly attached, we can narrow it down to the valve seats.
__________________
sonikaccord is offline   Reply With Quote
Old 10-17-2017, 07:34 AM   #55
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
Quote:
Originally Posted by sonikaccord View Post
Ahhhh. Ok it sounds like your intake valve isn't sealing for cyl #1. Is that the same situation for the rest of them?

If you do the leakdown test without the rocker assembly attached, we can narrow it down to the valve seats.
ok ill give that a shot
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-19-2017, 03:26 PM   #56
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
got the head back off

https://youtu.be/wGZovGxgTLc
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-19-2017, 08:48 PM   #57
wtfisafleek
CB7tuner Member
 
Join Date: Sep 2017
Location: Mesquite, TX
Posts: 115
wtfisafleek is cool... so far.
I think you'll have to get the cam and rocker assembly off to test if it's gonna seal.
wtfisafleek is offline   Reply With Quote
Old 10-19-2017, 10:11 PM   #58
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
ok
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-25-2017, 08:37 PM   #59
zZcommandoZz
CB7tuner Member
 
Join Date: Aug 2015
Location: Saginaw, MI
Posts: 73
zZcommandoZz is cool... so far.
https://youtu.be/vWjHMhMDqc8
__________________
https://flic.kr/p/ELMAhy
zZcommandoZz is offline   Reply With Quote
Old 10-25-2017, 09:28 PM   #60
wtfisafleek
CB7tuner Member
 
Join Date: Sep 2017
Location: Mesquite, TX
Posts: 115
wtfisafleek is cool... so far.
That big groove in the cam and head is worrisome. I'm not super familiar with these particular engines but that doesn't look like a stock oil galley of any sort.

It's so deep...I have no idea what may have caused that if it is in fact damaged, but I think both are trash. Cams by nature are very brittle and a big groove like that is inviting breakage. Even if you figure out what the actual sealing problem is, those problems would still be there.

If it were me I'd source out a new cam/head and go from there. I know you probably spent a good amount of coin on the head rebuild, but I don't think it's worth saving. I'd suggest getting others' opinion before you do anything. If worse comes to worse, you might be able to save the rocker assembly, bolts, valves, keepers, and springs. Good luck and keep us updated.

Last edited by wtfisafleek; 10-25-2017 at 09:48 PM.
wtfisafleek is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 04:22 PM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.