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Bad day today, was cruising to a stop light and all the sudden the car just started studdering and shaking, lost all power and died, started it back up and limped it into a parking lot, towed it home found a broken valve spring, what would be the smart way to go about this, what are the chances the valve is bent, I can still move it up and down and appears fine, but want to borescope it. Would it be smart to replace all the valve springs and run it? Thank you
2015 c7 z06 m7
First thing I would do is to put a borescope to see the condition of the piston and valve that is affected. If those are bad, game over. If they are good, depending on how good you feel, I would pull another spring and see if they all have the same range of motion. Can it spin freely?
If I escaped unscathed. I would buy a set of springs and replace that one and run the car for a bit. If all seems well, change all the springs.
First thing I would do is to put a borescope to see the condition of the piston and valve that is affected. If those are bad, game over. If they are good, depending on how good you feel, I would pull another spring and see if they all have the same range of motion. Can it spin freely?
If I escaped unscathed. I would buy a set of springs and replace that one and run the car for a bit. If all seems well, change all the springs.
thank you for the quick reply, as soon as I can I will borescope it and see what I can see and go from there, hoping atleast the piston is in good shape
thank you for the quick reply, as soon as I can I will borescope it and see what I can see and go from there, hoping atleast the piston is in good shape
Can I ask how many miles on the car/engine? Also, what cylinder is the failure on? Not that it will help you but this topic is searched quite often and might help the next person. Fingers crossed for your piston
Thank you for sharing this daunting experience with your 2015 C7. Safety is always at the forefront of everything that we do, and we can imagine how worried you must've been when this shaking started. Our team would like to investigate further and weigh our options to assist urgently. If you could email us at socialmedia@gm.com with your contact information, VIN, and the name/location of your preferred Chevrolet dealership, we can determine next best steps. By sending us a message, you consent to the information you provide being monitored and recorded by GM or those acting on GM’s behalf, subject to the GM Privacy Statement: https://www.gm.com/privacy-statement.html.
Don't ya love these GM "Customer Care" messages...maybe GM should rather spend some more money and time at process quality monitoring at their plants and their suppliers plants.....
Don't ya love these GM "Customer Care" messages...maybe GM should rather spend some more money and time at process quality monitoring at their plants and their suppliers plants.....
Don't ya love these GM "Customer Care" messages...maybe GM should rather spend some more money and time at process quality monitoring at their plants and their suppliers plants.....
I hope it turns out ok for you. My 14 M7 did the same in the number 7 cylinder. Spring snapped, valve dropped, piston obliterated, hole through cylinder wall. New/used engine install followed.
Broken Valve Spring
