Spark plug won't come out
Thread Starter
|
Junior Member
Joined: Dec 2018
Posts: 9
Likes: 0
Spark plug won't come out
Volvo 2002 s60. Changing spark plugs. All was going well till I got to the last one. Only was able to budge it a little. Used strong pressure with socket wrench but was afraid to break it. Any suggestions to remove it. Would trying it with the engine hot help?
Senior Member
Joined: Jul 2020
Posts: 5,113
Likes: 676
From: GA
Yes be patient - if the plug has loosened a few degrees, spray penetrant into the hole - wait, tighten, loosen, wait, tighten, loosen - and so on, With lots of patience and penetrant - it will slowly be able to turn a few more degrees, then a 1/4 turn then 1/2 turn ... - don't use too much force - you could damage the head - that is not a terrible fate, but one you want to avoid.
A hot engine might help - aluminum expands more than steel so it might come out easier - but it is always recommended to install plugs in a cold engine, with a aluminum head and a steel plug. Sometimes plugs are hard to get out because there is carbon built up in the threads - this can come from a loose plug allowing gasses past the sealing ring.
A hot engine might help - aluminum expands more than steel so it might come out easier - but it is always recommended to install plugs in a cold engine, with a aluminum head and a steel plug. Sometimes plugs are hard to get out because there is carbon built up in the threads - this can come from a loose plug allowing gasses past the sealing ring.
Thread Starter
|
Junior Member
Joined: Dec 2018
Posts: 9
Likes: 0
Yes be patient - if the plug has loosened a few degrees, spray penetrant into the hole - wait, tighten, loosen, wait, tighten, loosen - and so on, With lots of patience and penetrant - it will slowly be able to turn a few more degrees, then a 1/4 turn then 1/2 turn ... - don't use too much force - you could damage the head - that is not a terrible fate, but one you want to avoid.
A hot engine might help - aluminum expands more than steel so it might come out easier - but it is always recommended to install plugs in a cold engine, with a aluminum head and a steel plug. Sometimes plugs are hard to get out because there is carbon built up in the threads - this can come from a loose plug allowing gasses past the sealing ring.
A hot engine might help - aluminum expands more than steel so it might come out easier - but it is always recommended to install plugs in a cold engine, with a aluminum head and a steel plug. Sometimes plugs are hard to get out because there is carbon built up in the threads - this can come from a loose plug allowing gasses past the sealing ring.
Thread
Thread Starter
Forum
Replies
Last Post
