Piston Slap?
Piston Slap? well i noticed latly in the colder mornings when i first start my car i can hear like a knocking. The engine shop down the rd from me said its a piston slap and its casued bc its cold out and gms are known?Well my question is what should i do and how do i found out what it is? Could be the valve train or lower half idk. HELP it has 86k on it
Its probably the infamous piston slap that these cars have especialy when it is cold outside. I wouldnt sweat it too much since the slap goes away one the engine gets warm and the parts expand.
My car has had the piston slap noise since the first oil change (bought it at 22,000 miles). It had the lifters changed under warranty, I had it in so many times they extended my engine warranty for I forgot how much longer.
Had belts, pullies, tensioners changed too. Nothing fixed the problem, still does it today, not better not worse. It's been down the track a few times and revved to 6000 a lot. Now it has 37,000 on it so I guess I'm not going to worry. Have a listen, this is back around 26,000 miles
Had belts, pullies, tensioners changed too. Nothing fixed the problem, still does it today, not better not worse. It's been down the track a few times and revved to 6000 a lot. Now it has 37,000 on it so I guess I'm not going to worry. Have a listen, this is back around 26,000 miles
On The Tree
Joined: Jun 2005
Posts: 177
Likes: 0
From: Left Coast, USA
Sounds exactly like mine has since brand new. Dealer wanted to replace the pistons per Preliminary Service Bulletin 00150 back in '02.
I told them I didn't want their mechanic to tear my brand new engine apart.
Denied.
Still makes the noise. I have 31K miles on it and a 50K, 7 year warranty. Warranty will last until the '09's come out. I use Mobil 1 5w30.
By the way, this car has had P0410 code once and they replaced 1997272 solenoid. That's it except for both front RL/turn indicator lights have burned out which I replaced.
Otherwise the car has been perfect. I haven't even replaced the tires, battery, windshield wiper blades, etc, na-da yet.
It is at the dealer's body shop right now getting the sail panel repaired for paint bubbles, Service Bulletin 03-08-98-001A.
I told them I didn't want their mechanic to tear my brand new engine apart.
Denied.
Still makes the noise. I have 31K miles on it and a 50K, 7 year warranty. Warranty will last until the '09's come out. I use Mobil 1 5w30.
By the way, this car has had P0410 code once and they replaced 1997272 solenoid. That's it except for both front RL/turn indicator lights have burned out which I replaced.
Otherwise the car has been perfect. I haven't even replaced the tires, battery, windshield wiper blades, etc, na-da yet.
It is at the dealer's body shop right now getting the sail panel repaired for paint bubbles, Service Bulletin 03-08-98-001A.
Originally Posted by 8a8mfh
My car has had the piston slap noise since the first oil change (bought it at 22,000 miles). It had the lifters changed under warranty, I had it in so many times they extended my engine warranty for I forgot how much longer.
Had belts, pullies, tensioners changed too. Nothing fixed the problem, still does it today, not better not worse. It's been down the track a few times and revved to 6000 a lot. Now it has 37,000 on it so I guess I'm not going to worry. Have a listen, this is back around 26,000 miles
Had belts, pullies, tensioners changed too. Nothing fixed the problem, still does it today, not better not worse. It's been down the track a few times and revved to 6000 a lot. Now it has 37,000 on it so I guess I'm not going to worry. Have a listen, this is back around 26,000 miles
thats exactly what mine sounds like except not as loud tho....im the second owner and its being doing it since ive had at... i had a girl ask me before if i had a diesel engine in it....
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Originally Posted by z28_n_tx
thats exactly what mine sounds like except not as loud tho....im the second owner and its being doing it since ive had at... i had a girl ask me before if i had a diesel engine in it....
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Banned
Joined: Dec 2004
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Yeah, just piston slap. Probably scoring the walls and blow up in another 2K or so miles.
J/K!!!
My friend had a 60K mile LS1 in his 3rd gen IROC and it slapped HELLA BAD! When he pulled the heads to do a head/cam swap the cylinder walls looked PERFECT and still had the hash marks ect. Not a bit of scoring. Don't sweat it, I don't think of it as piston slap as much as I think of it as my motor mocking the way a 4.6's knees knock when I get around them.
J/K!!!
My friend had a 60K mile LS1 in his 3rd gen IROC and it slapped HELLA BAD! When he pulled the heads to do a head/cam swap the cylinder walls looked PERFECT and still had the hash marks ect. Not a bit of scoring. Don't sweat it, I don't think of it as piston slap as much as I think of it as my motor mocking the way a 4.6's knees knock when I get around them.
