What method to loosen up stuck piston rings? - Honda-Tech - Honda Forum Discussion


Honda Accord (1990 - 2002) Includes 1997 - 1999 Acura CL

What method to loosen up stuck piston rings?

Reply
 
 
 
Thread Tools Search this Thread
Old 04-14-2004, 07:38 PM   #1
Thread Starter
 
eswaroop's Avatar
 
Join Date: Mar 2004
Location: Austin, Tx, USA
Posts: 52
Default What method to loosen up stuck piston rings?

Hi,

Is there a way to loosen up stuck piston rings without removing the pistons? Maybe pour some oil/cleaner down the spark plug holes and let it sit overnight and then remove the stuff by cranking the engine without the plugs in it, so that some of the stuff comes out?

Thanks

es
eswaroop is offline   Reply With Quote
Old 04-15-2004, 04:32 AM   #2
Trial User
 
lingerbw's Avatar
 
Join Date: Jun 2003
Location: Stafford, VA, US
Posts: 37
Default

What exactly do you mean by "stuck"? I'm confused about what's happening. Can you describe some symptoms?
lingerbw is offline   Reply With Quote
Old 04-15-2004, 05:34 AM   #3
 
eswaroop2's Avatar
 
Join Date: Apr 2004
Location: Austin, tx, usa
Posts: 9
Default Re: (lingerbw)

By stuck I mean the compression rings are glued or sticking to their lands (grooves ) in the piston. That is bad, as they do not move and hence cannot accomodate for the expansion and contraction of the cylinder. (They are not stuck to the cylinder, that case is called seizing of the piston)

And so the result is compression loss especially at higher operating temperatures.

eswaroop2 is offline   Reply With Quote
Old 04-15-2004, 06:19 AM   #4
Trial User
 
lingerbw's Avatar
 
Join Date: Jun 2003
Location: Stafford, VA, US
Posts: 37
Default

Ooooh... that seems like a tuffy. Just thinking about the physics of the situation, it sounds like you would have to pull the pistons to solve the problem. I know this doesn't help you solve this, but how did that happen? Dirty/old oil?
lingerbw is offline   Reply With Quote
Old 04-15-2004, 08:16 AM   #5
 
CityHunt3r's Avatar
 
Join Date: Sep 2003
Location: long beach, ca, us
Posts: 36
Default Re: (lingerbw)

how come u dont just pull the pistons n fix it.. how else u expect to fix the rings...
CityHunt3r is offline   Reply With Quote
Old 04-15-2004, 09:46 AM   #6
Thread Starter
 
eswaroop's Avatar
 
Join Date: Mar 2004
Location: Austin, Tx, USA
Posts: 52
Default Re: (CityHunt3r)

Well, pulling the pistons is the last thing I want to do right now. Too many logistics issues (dont have any other form of transport, not too confident of doing the massive job myself)

There are some methods like soaking the rings by pouring some miracle mystery oil / Tranny oil through the plug holes and let them sit for a day or two and then flush out as much oil as possible and crank up the engine. But I am concerned about the risks involved in spoiling the CAT, O2 sensors, more carbon due to more oil burning and so on... Need more wise ppls opinions before I dive.

eswaroop is offline   Reply With Quote
Old 04-15-2004, 10:24 AM   #7
RTFM
 
Join Date: Jun 2002
Location: Conroe, TX
Posts: 7,240
Default

marvel mystery oil down teh sparkplug holes will do it fine.
v4lu3s is offline   Reply With Quote
Old 04-15-2004, 06:06 PM   #8
Thread Starter
 
eswaroop's Avatar
 
Join Date: Mar 2004
Location: Austin, Tx, USA
Posts: 52
Default Re: (v4lu3s)

Is it safe for the CAT and the o2 sensors?
eswaroop is offline   Reply With Quote
Old 04-16-2004, 04:08 AM   #9
 
cleanaccord1997's Avatar
 
Join Date: Apr 2004
Posts: 35
Default Re: (eswaroop)

as far as i am aware it should not hut the cat but it may through a code which is a easy fix
cleanaccord1997 is offline   Reply With Quote
Old 04-16-2004, 07:20 AM   #10
Honda-Tech Member
 
nuc79's Avatar
 
Join Date: Jan 2003
Location: CID, IA
Posts: 672
Default Re: (cleanaccord1997)

Seafoam Engine Treatment through the brake booster line, and 1/3 bottle in the crankcase for 100miles...
nuc79 is offline   Reply With Quote
Old 04-16-2004, 03:10 PM   #11
Honda-Tech Member
 
Chiovnidca's Avatar
 
Join Date: Apr 2002
Location: Cincinnati,, Oh
Posts: 7,575
Default Re: (nuc79)


Ive had good luck pouring some gm top engine cleaner down the spark plug holes and letting it soak for a few hours. Project "little red" is soaking right now.
https://honda-tech.com/zerothread?id=834443
Chiovnidca is offline   Reply With Quote
Old 09-20-2010, 01:48 AM   #12
Trial User
 
Join Date: Sep 2010
Posts: 1
Default Re: What method to loosen up stuck piston rings?

After a great deal of me lurking about on automotive sites because of engine smoke (sticking rings...replaced valve stem seals)to find out how to get them freed up without removing them, I decided to come back here, register, and report my success.

Here's what I did that finally worked for me:

The engine is a vertical 4 double overhead cam. Initial compression test was 176-150-176-176 out of a possible 191 max. I did this compression test after a tune up when I discovered one discolored plug (#2 cylinder). The #2 cylinder compression tested low. Right away I added acetone, let it sit a bit, then fired it up. Compression jumped up to 176 from 150. I was now noticing smoking at high RPM with heavy throttle. I believe I was smoking before but didn't see it.

I knew I had a stuck second ring and oil rings likely. I tried every chemical that seemed it may work to clear all the rings up, but nothing was working. My only success was getting the top ring working again. But, here's where I had success: I tried B12 Chemtool

Here's what I did: I drained my oil and left drain plug removed. I put the offending cylinder at TDC and poured in B12. Then, using an air fitting I pumped in 120psi (most I could) air pressure forcing the B12 down through and around the piston. I repeated this several times. I allowed some time between each air shot for soaking to occur. I then returned motor oil and drove. Oil pan did not contain any B12.

After the above procedure, I was impressed with the smoke reduction I was experiencing at high RPM. So...I did it again. This time I bought 2 cans of B12 and was very thorough. I kept soaking and blowing it through. (I also put some B12 on the spot under my oil filler cap to see what it did to varnish. Wow...too bad this stuff is bad for seals and some gaskets.)

I almost forgot to mention I did WOT runs after treatments.

Anyway, now I'm smoke free and plan to treat the other 3 cylinders to match them all up clean wise. Sure would like to see a 180 all the way across. Kinda doubt I'll get much more compression since their all matched up up at 176.

Anyway, that's it.
whampus is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
DIY: Rear Brake Caliper Rebuild MotorMouth93 Acura Integra 4 05-19-2017 03:50 PM
K24a4 Piston rings without removing engine Paul Kane K Series 2 06-08-2015 05:49 PM
tensioner bolt stuck!!! The Up Garage Tech / Misc 3 01-16-2009 05:06 PM
need help gearbox filler plug [email protected] Tech / Misc 2 01-10-2005 10:08 AM
Unsticking Oil rings Idea Outsane Tech / Misc 2 04-09-2003 02:02 PM


Tags
acura, carbon, engine, free, loosen, loosening, marvel, mystery, oil, piston, ring, rings, stuck, symptoms, treatment

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 10:33 AM.


 
  • Ask a Question
    Get answers from community experts
What's your question?
Send