4 cyl, piston#3 issue

[Gennybro]

Got to talking to a chap today about 4 cylinder engines.He had told me that a friend of his had 3, 4 cylinder jeeps and that between 130,000 and 150,000 miles the #3 piston disentergrated. This supposedly happened to all 3 jeeps and the same cylinder. Any comments.

 

[superj]

I have nEver heard that of a jeep 2.5

 

[Jester32]

Only way you will break a piston is running to hot and ring lands closing or Improper machine work. Or of course mechanical contact. Like a valve. Running lean will melt a piston. You gotta get the full story. A piston just doesn't break.

 

[MY95YJ]

I put 180k on my 2.5 and a lot of abuse too, revlimiter, oil changes every 10-15k, burned the harness twice and it never ever had a cylinder issue. I only pulled it cause I got a 4.0 for a song.

-James

 

[Bounty__Hunter]

I own 2 4bangers and never a problem.

 

[Gennybro]

Perhaps I was beeing told a bull S--- story.

 

[jfrabat]

My 4banger is 140K miles old, and still running strong. In fact, I ran a compression test, and only #1 was a bit low, all other 3 cylinders were almost EXACTLY spot on!

 

[Gennybro]

Thanks for the input guys,it puts my mind at ease,this was second hand info so I'm not gonna worry about it.

 

[rhermes]

I have a 2000 wrangler with the 2.5 4 cylnder. I came home the other night with a noise I thought was a rod bearing knock. Upon disassembly I found the piston skirt for #2 cylnder in the pan. I pulled all the pistons and found #3 cracked as well. This vehical has only 114 k miles on it and I am suprised by this failure. Typicaly what will break a skirt on a piston is excessive piston to cylnder clearance. my next step is to measure the clearance. Any other jeepers experanced this?