Does piston slap go away at higher rpm?
Does piston slap go away at higher rpm?
Higher engine load places more force on the piston skirt to create a louder knock. Usually, the knock will disappear after the engine has been running for a couple minutes and the piston has expanded. However, some may knock for up to five minutes.
Why does my GM engine knock when I start the car?
The engine knock may be caused by an interaction between carbon that has formed on the piston, the piston motion, and the cylinder wall. GM engineering feels that this engine knock or piston slap is not detrimental to the vehicle.
Why does my GMC Yukon knock at cold starts?
Hi, I have a 2008 Gmc yukon denali with 6.2 v8 engine 108500 miles, it knocks at cold starts up for 5 seconds and the noise goes away as the engine temperature comes to normal. What is the next step to solve this problem? Minutes. After start. The dealer agrees something Is wrong but Gm won’t do anything. ’07 Yukon Denali. Came from California.
What causes GM engine knock and piston slap?
The engine knock may be caused by an interaction between carbon that has formed on the piston, the piston motion, and the cylinder wall. GM engineering feels that this engine knock or piston slap is not detrimental to the vehicle. We are not so sure of that.
Why does my GMC Sierra knock at stop signs?
After the knock dissipates a ticking is noticable during slow and medium acceleration. The tick be ones more rapid as speed increases. 2011 GMC Sierra 6.2 engine, bought used with 50k miles, paid cash, engine knocks especially at cold temps, truck surges at stop signs and intersections.
Hi, I have a 2008 Gmc yukon denali with 6.2 v8 engine 108500 miles, it knocks at cold starts up for 5 seconds and the noise goes away as the engine temperature comes to normal. What is the next step to solve this problem? Minutes. After start. The dealer agrees something Is wrong but Gm won’t do anything. ’07 Yukon Denali. Came from California.
The engine knock may be caused by an interaction between carbon that has formed on the piston, the piston motion, and the cylinder wall. GM engineering feels that this engine knock or piston slap is not detrimental to the vehicle.
After the knock dissipates a ticking is noticable during slow and medium acceleration. The tick be ones more rapid as speed increases. 2011 GMC Sierra 6.2 engine, bought used with 50k miles, paid cash, engine knocks especially at cold temps, truck surges at stop signs and intersections.
The engine knock may be caused by an interaction between carbon that has formed on the piston, the piston motion, and the cylinder wall. GM engineering feels that this engine knock or piston slap is not detrimental to the vehicle. We are not so sure of that.
