Cracked Piston Help!
Thread Starter
Instructor
Joined: Oct 2000
Posts: 177
Likes: 0
From: Laguna Niguel, CA
Cracked Piston Help!
So I take my car in for a ring job on the 4th. Dealer still has the car and calls me today to tell me that the #4 piston is cracked and they have to wait for a new one to arrive. What would have caused this to happen and what is the likely hood that this motor is ever going to be right. I have 26K miles. I drive aggressive but nothing that I would think is out of line.
Le Mans Master
Joined: Mar 2002
Posts: 7,179
Likes: 1
From: Honolulu Hawaii
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Re: Cracked Piston Help! (bigwave)
Hard to say for sure without looking at some other engine components. Could be A/F leaning out, PCV blow-by issues, etc.
Any codes? See if the dealer will put it on a wide-band dyno after the piston is replaced. (don't laugh). :lol: :lol: :lol:
Any codes? See if the dealer will put it on a wide-band dyno after the piston is replaced. (don't laugh). :lol: :lol: :lol:
Thread Starter
Instructor
Joined: Oct 2000
Posts: 177
Likes: 0
From: Laguna Niguel, CA
Re: Cracked Piston Help! (bigwave)
OCMike I just noticed you’re in Newport. The dealer that is doing the work is Connell Chevy. What is a wideband Dyno is this different then a regular dyno? You also mentioned PCV blow by issue. Do you mean the PCV could have clogged up? There were no codes that I know of and the car ran good other then the oil consumption.
Le Mans Master
Joined: Mar 2002
Posts: 7,179
Likes: 1
From: Honolulu Hawaii
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Re: Cracked Piston Help! (bigwave)
You are in the best hands at Connell Chevrolet. The Service Manager, Al Vondry, is the best in the business.
My suggestion for the dyno is to see if there is detonation. The Air/Fuel ratios at high rpm (lean cond's) can cause piston cracking. Are you having warranty work for excessive oil consumption? If so, I suspect the ring lands may also be damaged.
I am sure Connell will take good care of you.
My suggestion for the dyno is to see if there is detonation. The Air/Fuel ratios at high rpm (lean cond's) can cause piston cracking. Are you having warranty work for excessive oil consumption? If so, I suspect the ring lands may also be damaged.
I am sure Connell will take good care of you.
Thread Starter
Instructor
Joined: Oct 2000
Posts: 177
Likes: 0
From: Laguna Niguel, CA
Re: Cracked Piston Help! (OCMike)
Thanks Mike,
I have had issues with pinging all along. I heard a lot of good things about Connell. They have had my car now for 2 weeks and just found out about the piston yesterday. I think they had a Tech get sick in the middle of my job so it just sat for a while. They claim I could get it back today but I am doubtful about that.
I have had issues with pinging all along. I heard a lot of good things about Connell. They have had my car now for 2 weeks and just found out about the piston yesterday. I think they had a Tech get sick in the middle of my job so it just sat for a while. They claim I could get it back today but I am doubtful about that.
Thread Starter
Instructor
Joined: Oct 2000
Posts: 177
Likes: 0
From: Laguna Niguel, CA
Re: Cracked Piston Help! (bigwave)
The dealer has had my car since the 4th of Nov. Do you fell GM owes me a car payment or extended warranty or something. What’s the best approach? The service dept has had a good attitude all along but this is getting a little old. Any proven suggestions.
Thread Starter
Instructor
Joined: Oct 2000
Posts: 177
Likes: 0
From: Laguna Niguel, CA
Re: Cracked Piston Help! (bigwave)
OK I pick up my car last night and have a few questions. On the "DIC" the oil temp reads LOW and will not change and I can smell oil burning as I drive. Were is the sensor for this located? Could it be disconnected and leaking oil? The car seems to run good but I have not pushed it yet. They also trashed my paint with deep water spots that may need to be sanded out. I spent an hour on it with 3M Fines It. Anyway a little advise on the oil temp would be great.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Le Mans Master
Joined: Mar 2002
Posts: 7,179
Likes: 1
From: Honolulu Hawaii
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Re: Cracked Piston Help! (bigwave)
Why mess with it? Take it back and show it to Al Vondry. He will take care of it.
This is not at all like COnnell.
This is not at all like COnnell.
Thread Starter
Instructor
Joined: Oct 2000
Posts: 177
Likes: 0
From: Laguna Niguel, CA
Re: Cracked Piston Help! (OCMike)
I would just like some feed back as to how simple it is to fix. I do not want to leave it with them for two or three days for a ten minute fix.
