not good(pics)

[jtexas]

Re: not good(pics)

might just be the glare in the photo, but is that plug not got aluminimum on it? like from a melting piston? could have been struck by a liberated piston fragment

your test light...with the two electrodes in contact like that...with no air gap...they won't conduct like the others

I meant, they will conduct but not like the others...it's not the same thing as "spark"

 

[F_R]

Re: not good(pics)

You simply MUST get into that engine deeper and see what is happening. While (if) you still have anything worth fixing that is. Something is coming apart in there. Don't be fooling around looking at spark and stuff. You have internal engine damage and it will get MUCH worse, VERY fast.

 

[KYHunter2]

Re: not good(pics)

No kidding, you'll end up with scrap .

Scrap prices are up now , you may get $100.00 for the block , LOL.

At this point a compression test , is probably , a mute point.

Start by pulling heads.

Which , you should have done , before you ran it again.

Wouldn't have cost much , head gasket .

KYHunter

 

[rickdb1boat]

Re: not good(pics)

Any news? Just curious....

 

[tschamp20]

Re: not good(pics)

none yet, my garage had two feet of water in it from t.s. ERNESTO.still cleaning up.i took some pix while the water was rising.well post l8r.i promise they will be smaller then above.

 

[tschamp20]

Re: not good(pics)

just curious,what are some things that i should do while the head or heads are off?as far as preventative maint.obviously im gonna have some work to do with cylinder 2.thanks

 

[KYHunter2]

Re: not good(pics)

As far as preventative maintenance, not really.

More along the lines of what is damaged, and what you'll need to do to repair it.

But, there's something seriously wrong.

If the piston is , indeed smashing the plug.

Your looking at tearing the entire powerhead down.

And trying to figure out where the slop , originates.

You'd think if the crankshaft has incorrect movement, it would effect more then one cylinder.

Could be in the con-rod, wrist pin , etc. on that one cylinder , I guess.

Never had a problem exactly like yours.

Are you sure the plug isn't , somehow getting installed too deeply?

ie: helicoil incorrectly installed , etc.?

KYHunter

 

[tschamp20]

Re: not good(pics)

alright finally took a look and heres what i found.not posting actual pic to save site space.please take a look.as you can see there is def. something wrong.
http://img.photobucket.com/albums/v681/badassdak20/DSCN0011.jpg
those pieces of metal are right where i found them.they were magnetic(stuck to a non-magnetized screwdriver?)
http://img.photobucket.com/albums/v681/badassdak20/DSCN0014.jpg
http://img.photobucket.com/albums/v681/badassdak20/DSCN0013.jpg
http://img.photobucket.com/albums/v681/badassdak20/DSCN0018.jpg
http://img.photobucket.com/albums/v681/badassdak20/DSCN0019.jpg
http://smg.photobucket.com/albums/v681/badassdak20/?action=view&current=DSCN0017.flv
the vids a little shaky sorry.hopefully you can tell me what would cause that type of slop.
http://img.photobucket.com/albums/v681/badassdak20/DSCN0012.jpg
that piece of debri sticking up in this pic was actually embedded.ouch.Please give me guidance.
thanks DOUG

 

[F_R]

Re: not good(pics)

Well, I would hazard a guess it's either a con rod bearing cage or wrist pin bearing. Either way, you have to tear it down the rest of the way, obviously. Actually, I've seen similar destruction from broken bearing cages lots of times.

 

[tschamp20]

Re: not good(pics)

can these repairs be done w/o removing the whole powerhead?

 

[wilde1j]

Re: not good(pics)

No!

 

[deejaycee_2000]

Re: not good(pics)

NICE!! You gonna reuse those plugs?!?!?! or can I have them for my Chrysler 45!! It wont make a diffrence cause it runs like a peice of crap anyways! d

hahahahaha ...... You just love your Chrysler don't you .. lol ... I spoke to a marine tech the other day he said that Chrysler's are good idlers .... not a word after that ......

 

[Mark42]

Re: not good(pics)

The thread depth on the plug does not look like it could extend far enough to strike the piston. Like others said, if it was hit by the piston, it would be hit multiple times or at the very least the first time the motor was started with that plug in it.

The sheared off piece of the electrode indicates that there was some material loose in the combustion chamber that was caught between the plug and the piston. It also appears that the plug absorbed the impact enough to prevent immediate catatrophic damage.

Based upon those photos, my assessment is that a piece of the piston broke loose, caused the damage to the plug, then exited via the exhaust port.

I suggest removing the head and inspect the piston. The piece may have come from the top ring land (where you could see it) or maybe from the piston skirt where you won't be able to see it. Look for scoring on the cylinder walls, also look at the intake and exhaust ports for signs that material may have been caught half in/half out and chopped.

At any rate, I am 99% sure that something passed through the combustion chamber, either a piece of piston or ring, etc. The chances of it being solely a smack by the piston is highly unlikely (in mho).

 

[Mark42]

Re: not good(pics)

Edit: Oops. I deleted what I posted because I somehow missed all the photos and video you posted Looks like one or both ends of the connecting rod has a failing bearing.

Time to tear it down.

 

[thumbnut]

Re: not good(pics)

Well, I would hazard a guess it's either a con rod bearing cage or wrist pin bearing. Either way, you have to tear it down the rest of the way, obviously. Actually, I've seen similar destruction from broken bearing cages lots of times.

Yup, seen this on 4 of my dirtbikes when the needle cage broke. Exact same damage each time.