strengthrehab
Well-Known Member
- Thread starter
- #1
So, after my last track day, car was running kinda rough. Drove the 2 hours home and then attempted to figure out what was going on as I never got a DTC/CEL.
After trying everyting I finally pulled plugs to find the 8 plug with a bent electrode. This intrigued me so I did compression and leakdown tests and all of the cylinders were right around 235 psi except cylinder 6. Leakdown test revealed good numbers except #6 again which showed 100% leakdown.
I think decided to use a boroscope and looked at #6 piston to find it looked normal. I decided to pull the cam cover and found a broken intake valve spring and cracked retainer.
Car is being torn down tomorrow to see if there are any other issues (hopefully not)
So.....has anyone experienced a broken valve spring in a 5.0? On the day this happened, I didn't over-rev the engine or anything. Just tracking it (road course).
If you have had a broken spring, was anyting else damaged?
After trying everyting I finally pulled plugs to find the 8 plug with a bent electrode. This intrigued me so I did compression and leakdown tests and all of the cylinders were right around 235 psi except cylinder 6. Leakdown test revealed good numbers except #6 again which showed 100% leakdown.
I think decided to use a boroscope and looked at #6 piston to find it looked normal. I decided to pull the cam cover and found a broken intake valve spring and cracked retainer.
Car is being torn down tomorrow to see if there are any other issues (hopefully not)
So.....has anyone experienced a broken valve spring in a 5.0? On the day this happened, I didn't over-rev the engine or anything. Just tracking it (road course).
If you have had a broken spring, was anyting else damaged?
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