Seafoam to fix stuck ring?

Seafoam to fix stuck ring?

Postby rrw2323 [OP] » January 14th 2010, 4:27pm

Hi all,

Just changed both head gaskets on a 2000 Astro 4.3 W w/ 132k that I bought as a project. After completion there is a misfire on the No. 2 cylinder(PO302). I did a compression test on that cylinder and it read 85, while the other two on that head read 135. There is also a faint knock that I can't exactly pinpoint with a stethascope. (Could hear nothing through the oil pan). Possible stuck ring? I bought a can of Seafoam. I am unsure of whether to add any directly through the spark plug hole, or just through the intake. any feedback would be greatly appreciated.
Original Poster [OP]
rrw2323
Fueling (Empty tank)
Fueling (Empty tank)
Years of Membership: rrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full years
Posts: 7
Topics: 3
Joined: January 2010
Alias (AKA):

  • Similar topics
    Replies
    Views
    Author
  • I think my timing has jumped. How do I fix this?
    by JKlug81 » March 30th 2021, 7:10pm in Engines
    14 Replies
    318 Views
    Last post by ptysiek View the latest post
    April 9th 2021, 6:25pm
  •  
    7
    33
    Last post by AstroSafari.com View the latest post
    April 11th 2021, 11:59am

Re: Seafoam to fix stuck ring?

Postby jeff's93astro » January 14th 2010, 4:45pm

i'm not sure about putting it directly into the cylinder. But if it was mine i'd just suck the whole can into it through a vac and let it sit 15-20 minutes then crank it. i dont know if it'll help with the compression but i did the samething to my truck and it helped with with the stuck oil rings
95 Astro 5.3L RWD 3/3 drop
88 Silverado 5.3L 2wd 4/6 drop
03 Suburban 5.3L 2wd 3/5 drop
Image
User avatar
jeff's93astro
V8 Swap Achievement
V8 Swap Achievement
Firing on 2 Cylinders (L2)
Firing on 2 Cylinders (L2)
Years of Membership: jeff's93astro has been a member for 11 full yearsjeff's93astro has been a member for 11 full yearsjeff's93astro has been a member for 11 full yearsjeff's93astro has been a member for 11 full yearsjeff's93astro has been a member for 11 full yearsjeff's93astro has been a member for 11 full yearsjeff's93astro has been a member for 11 full yearsjeff's93astro has been a member for 11 full yearsjeff's93astro has been a member for 11 full yearsjeff's93astro has been a member for 11 full yearsjeff's93astro has been a member for 11 full years
Posts: 1224
Topics: 55
Images: 19
Joined: July 2009
Location: Georgia
Gender: Male
Alias (AKA):
Van Make/Model: Chevrolet Astro
Extra Info: CS 4.3L V6 RWD

Re: Seafoam to fix stuck ring?

Postby astro355 » January 14th 2010, 7:20pm

Perhaps before you try fixing it, you diagnose it first. You will need to do a leak down test on that cylinder. Where you hear the air coming from will tell you what is leaking:

If you hear the sound of air:
-from the throttle body, the intake valve is open or leaking
-from the exhaust, the exhaust valve is open or leaking
-from the dipstick for the oil, the rings are bad or aren't sealing, it is leaking internally or head gasket is faulty
-from the radiator or overflow container (which will also make bubbles), it is leaking internally or head gasket is faulty

Also forgot that it can leak externally if the seal between the head, head gasket and block is not right. You would hear air blowing and feel cold air coming from the leak. That could be caused by a cracked head, improper torquing sequence, debris, etc.
Diagnose 1st, never be a parts changer!

355 small block chevy w/ modified 700R4

Image
User avatar
astro355
V8 Swap Achievement
V8 Swap Achievement
Firing on 4 Cylinders (L6)
Firing on 4 Cylinders (L6)
Years of Membership: astro355 has been a member for 12 full yearsastro355 has been a member for 12 full yearsastro355 has been a member for 12 full yearsastro355 has been a member for 12 full yearsastro355 has been a member for 12 full yearsastro355 has been a member for 12 full yearsastro355 has been a member for 12 full yearsastro355 has been a member for 12 full yearsastro355 has been a member for 12 full yearsastro355 has been a member for 12 full yearsastro355 has been a member for 12 full yearsastro355 has been a member for 12 full years
Posts: 5484
Topics: 57
Joined: May 2008
Location: Cleveland, OH
Gender: Male
Alias (AKA):
Van Model Year: 1989
Van Make/Model: Chevrolet Astro
Extra Info: 355 V8 700R4

Re: Seafoam to fix stuck ring?

Postby red98tj » January 14th 2010, 7:24pm

A small amount of auto trans fluid in with the motor oil sometimes helps free up sticky valves or lifters. maybe a pint or so.
Vehicles:
2005 Chevy Avalanchesold
2000 Chevy Astro AWDsold
2003 Chrysler T&C AWD
2003 GMC Yukon XL 2500 Quadrasteer
2007 Chrysler Pacifica awd
2012 Keystone Outback 312bh
red98tj
Fueling (1/2 tank)
Fueling (1/2 tank)
Years of Membership: red98tj has been a member for 12 full yearsred98tj has been a member for 12 full yearsred98tj has been a member for 12 full yearsred98tj has been a member for 12 full yearsred98tj has been a member for 12 full yearsred98tj has been a member for 12 full yearsred98tj has been a member for 12 full yearsred98tj has been a member for 12 full yearsred98tj has been a member for 12 full yearsred98tj has been a member for 12 full yearsred98tj has been a member for 12 full yearsred98tj has been a member for 12 full years
Posts: 51
Topics: 10
Joined: February 2009
Location: Maine
Gender: Male
Alias (AKA): kevin
Van Make/Model: Chevrolet Astro
Extra Info: LT AWD

Re: Seafoam to fix stuck ring?

Postby Gary » January 14th 2010, 7:26pm

Not a big fan of the short cut repairs in a bottle.
User avatar
Gary
Dearly Departed
Firing on 4 Cylinders (L3)
Firing on 4 Cylinders (L3)
Years of Membership: Gary has been a member for 12 full yearsGary has been a member for 12 full yearsGary has been a member for 12 full yearsGary has been a member for 12 full yearsGary has been a member for 12 full yearsGary has been a member for 12 full yearsGary has been a member for 12 full yearsGary has been a member for 12 full yearsGary has been a member for 12 full yearsGary has been a member for 12 full yearsGary has been a member for 12 full yearsGary has been a member for 12 full years
Posts: 2472
Topics: 136
Joined: April 2008
Location: Rochester,NY 14559
Gender: Male
Alias (AKA):
Van Make/Model: Chevrolet Astro
Extra Info: high top

Re: Seafoam to fix stuck ring?

Postby rev_les » January 15th 2010, 5:43am

I have to agree with 355 on this one..... don't try fixing something you're not sure is the problem. Figure out WHERE the compression is going first. Also, what was the reason for changing the head gaskets at 132K? Was the misfire there before? Has coolant pooled in that cylinder and remained in there for any length of time?
Figure out the problem before buying parts
NRA Lifetime Member
2'nd amendment supporter
'13 Jeep Patriot
'01 Safari 150K 4.3 "W" 3.42's
'87 Monte Carlo SS
'79 Avco 32' RV
User avatar
rev_les
Site Contributor
Site Contributor
Firing on 2 Cylinders (L3)
Firing on 2 Cylinders (L3)
Years of Membership: rev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full years
Posts: 2235
Topics: 39
Joined: February 2009
Location: Pinehurst TX
Gender: Male
Alias (AKA): Les
Van Make/Model: Chevrolet Astro
Extra Info: LS 4.3 RWD

Re: Seafoam to fix stuck ring?

Postby rrw2323 [OP] » January 15th 2010, 4:36pm

Ran the Seafoam through the PCV vacuum line, turned off engine for 5 minutes, then ran til the smoke cleared. Erased my PO302 code and SES has not been on since. I agree that I should have done a definitive diagnosis, but I don't have compressed air. Threw a $6.49 hail mary and to my amazement, it worked!
Original Poster [OP]
rrw2323
Fueling (Empty tank)
Fueling (Empty tank)
Years of Membership: rrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full yearsrrw2323 has been a member for 11 full years
Posts: 7
Topics: 3
Joined: January 2010
Alias (AKA):

Re: Seafoam to fix stuck ring?

Postby astroturf » January 15th 2010, 7:50pm

Glad it worked out for you. Happy motoring.
My Cup is neither half empty nor half full... But has a hole in it. Holy Cup Holders Batman. LOLz, Jim
User avatar
astroturf
U.S. Armed Forces
U.S. Armed Forces
Firing on 8 Cylinders (L7)
Firing on 8 Cylinders (L7)
Years of Membership: astroturf has been a member for 11 full yearsastroturf has been a member for 11 full yearsastroturf has been a member for 11 full yearsastroturf has been a member for 11 full yearsastroturf has been a member for 11 full yearsastroturf has been a member for 11 full yearsastroturf has been a member for 11 full yearsastroturf has been a member for 11 full yearsastroturf has been a member for 11 full yearsastroturf has been a member for 11 full yearsastroturf has been a member for 11 full years
Posts: 9005
Topics: 112
Joined: August 2009
Location: Richmond, VA
Gender: Male
Alias (AKA):
Van Make/Model: Chevrolet Astro
Extra Info: 2wd Passenger

Re: Seafoam to fix stuck ring?

Postby rev_les » January 16th 2010, 1:18am

i might seafoam mine this weekend just to fog the neighbors out :evil:
Glad it worked
Figure out the problem before buying parts
NRA Lifetime Member
2'nd amendment supporter
'13 Jeep Patriot
'01 Safari 150K 4.3 "W" 3.42's
'87 Monte Carlo SS
'79 Avco 32' RV
User avatar
rev_les
Site Contributor
Site Contributor
Firing on 2 Cylinders (L3)
Firing on 2 Cylinders (L3)
Years of Membership: rev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full yearsrev_les has been a member for 12 full years
Posts: 2235
Topics: 39
Joined: February 2009
Location: Pinehurst TX
Gender: Male
Alias (AKA): Les
Van Make/Model: Chevrolet Astro
Extra Info: LS 4.3 RWD


 
  • Related topics
    Replies
    Views
    Last post

Return to Engines

It is currently April 11th 2021, 11:59am

Engines Forum
Engine Repairs, Modifications, Diagnostics, Tuning, Upgrading, Questions.

<a href="https://ad.doubleclick.net/ddm/trackclk/N8334.275400VERTICALSCOPEINC./B20209277.204028354;dc_trk_aid=407011718;dc_trk_cid=94070067;dc_lat=;dc_rdid=;tag_for_child_directed_treatment="target="_blank"><img src="https://tpc.googlesyndication.com/pagead/imgad?id=CICAgKDrrqWwMRCAARgcKAEyCN4sAjjtai4k" border="0" align="right">
<IMG SRC="https://ad.doubleclick.net/ddm/trackimp/N8334.275400VERTICALSCOPEINC./B20209277.204028354;dc_trk_aid=407011718;dc_trk_cid=94070067;ord=;dc_lat=;dc_rdid=;tag_for_child_directed_treatment=?" BORDER="0" HEIGHT="1" WIDTH="1" ALT="Advertisement">
Moderator: chevy57bert
To create a new topic in Engines, click this button:
Previous topic Next topic
Recent Image Attachments
Attached by:
Attached by: jfunkngroove
jfunkngroove
in Engines
Views: 206
Comments: 17
Date: Yesterday
Time: 10:38pm
» Read last comment
Attached by:
Attached by: Mmusicman
Mmusicman
in Engines
Views: 68
Comments: 3
Date: Apr 08 '21
Time: 8:52pm
» Read last comment
Attached by:
Attached by: jfunkngroove
jfunkngroove
in Engines
Views: 206
Comments: 17
Date: Apr 08 '21
Time: 1:55am
» Read last comment
Attached by:
Attached by: Mmusicman
Mmusicman
in Engines
Views: 266
Comments: 7
Date: Mar 22 '21
Time: 2:11pm
» Read last comment
Attached by:
Attached by: PinVanMan
PinVanMan
in Engines
Views: 266
Comments: 7
Date: Mar 21 '21
Time: 11:32pm
» Read last comment
Sponsors

Who is online

Users browsing this forum: No registered users and 15 guests