Do I have Engine knock?

[Freebeer187]

So I have posted in here b4 about how my car will "knock" or rumble at random interverals (about once every 3 seconds) in park or neutral (not drive) which vary in strength.

Now today b4 work I let the car warm up a minute while I had a smoke. I popped the hood just to take a look and I began seeing the engine actually shake (doesnt look to be to normal). I felt the dog bones and I could feel the exact rumble.

What does this sound like?

[Sabrewings]

Knock can be heard, but usually isn't. And you're definitely not knocking at idle. I have yet to hear my knock. Classically, knock is known as "ping" as it sounds more like a ping noise.

The only way to see if you have knock is with a scanner. What you're noticing (a "bumpy" idle) is common to all 3800s.

[Freebeer187]

Knock can be heard, but usually isn't. And you're definitely not knocking at idle. I have yet to hear my knock. Classically, knock is known as "ping" as it sounds more like a ping noise.

The only way to see if you have knock is with a scanner. What you're noticing (a "bumpy" idle) is common to all 3800s.

Cool, there are definettly no "ping" noises.

So no engine mounts are dog bones need to be replaced?

[Sabrewings]

Why would they need to be replaced?

[blowfishRus6]

random miss fire. my car also runs ruffer with lower quality gas. good gas and my car does not do it near as bad as it used to

[Freebeer187]

Why would they need to be replaced?

lol thats a funny avatar dude

[IndeedSS]

To answer you question, "do I have engine knock?" Probably, but that's not uncommon on a completely stock GTP either.

Anyway Sabrewings is right a small slightly detectable stumble is normal, but you shouldn't see much movement on your tach on your tach, if any at all.