Need help diagnosing engine "knock"
Anyone have any idea what I should start looking at to diagnose the issue?
I don't drive the car much (less than 100 miles per summer), and I believe it's been doing it since I purchased the car (4 years ago). I've just now been able to get to trying to figure out what the issue is (if any, maybe I'm just hearing a normal engine).
Any help is much appreciated!!
https://www.youtube.com/watch?v=fGY-...ature=youtu.be
Anyone have any idea what I should start looking at to diagnose the issue?
I don't drive the car much (less than 100 miles per summer), and I believe it's been doing it since I purchased the car (4 years ago). I've just now been able to get to trying to figure out what the issue is (if any, maybe I'm just hearing a normal engine).
Any help is much appreciated!!
https://www.youtube.com/watch?v=fGY-...ature=youtu.be
On my crappy laptop speakers that just sounds like a blown header gasket.


Scott
After researching more, I think its a blown head gasket. I seem to have oil in my coolant overflow tank, and underneath the car it looks like my engine is "sweating" oil. That is, it seems as if oil is just kind of all over everything down there, in a very thin film (this being after the car sat all winter and I had a look under).
My trans pan gasket let go over the winter, and I just replaced that + filter. Added new fluid, drove around the block, and noticed when I pulled in that my coolant overflow tank was bubbling. I didn't drive it far enough to heat up, and the fan hadn't even kicked in yet (the temp was low). I figured it was boiling, but it was more than likely air bubbling out now that I'm reading about the head gasket. This is what led me to decide to start diagnosing the noise to see if that played a role in anything...and sure enough, it seems that I've got all the symptoms of that noise being the culprit of a head gasket blown and these other issues (dirty coolant + bubbling).
Guess it's time to learn how to take apart a motor. Although I'd consider myself an advanced DIY'er around the house...this Vette was my introduction to working on cars deeper than just oil and wiper blade changes. To this point I've learned a lot, and time to go slow and learn a whole heck of a lot more I guess.


After researching more, I think its a blown head gasket. I seem to have oil in my coolant overflow tank, and underneath the car it looks like my engine is "sweating" oil. That is, it seems as if oil is just kind of all over everything down there, in a very thin film (this being after the car sat all winter and I had a look under).
My trans pan gasket let go over the winter, and I just replaced that + filter. Added new fluid, drove around the block, and noticed when I pulled in that my coolant overflow tank was bubbling. I didn't drive it far enough to heat up, and the fan hadn't even kicked in yet (the temp was low). I figured it was boiling, but it was more than likely air bubbling out now that I'm reading about the head gasket. This is what led me to decide to start diagnosing the noise to see if that played a role in anything...and sure enough, it seems that I've got all the symptoms of that noise being the culprit of a head gasket blown and these other issues (dirty coolant + bubbling).
Guess it's time to learn how to take apart a motor. Although I'd consider myself an advanced DIY'er around the house...this Vette was my introduction to working on cars deeper than just oil and wiper blade changes. To this point I've learned a lot, and time to go slow and learn a whole heck of a lot more I guess.
(And if you can dodge a wrench, you can dodge a ball!
)Scott
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