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Knocking /ticking noise

XxX700XxX

XxX700XxX

New member
Ok so my 3800 when it first gets started for first time in morning in makes like a ticking/slight knock noise for 10-30 seconds then stops I have heard rod knocks before and it doesn't sound like that.my car runs amazing and isn't throwing any codes it's full on oil and always has been took car of..like I said only knocks for maximum of 30 seconds and doesn't do it for rest of day just first start of day
 


Post a video.. Rod knock is easy to tell if you hold the rpms at around 2k do you still hear it.. If not then it's not rod knock
 
Just seems like a lifter tick to me.

If you are close to needing an oil change, drain a small bit out and put 1 quart of tranny fluid in the oil. Trans fluid has far better cleaners and can help remove deposits inside the motor. Run it for 100-200 miles and change the oil.

It's worth a shot to see if that stops the ticking upon start up.
 
its time for a oil change i bet. gm lifters do tick after sitting over night to some cars, gm says its ok as long as it stops in a minute or so.
 




It could be that. How many miles on that oil change? If you change it and the noise changes in any way that's probably it. By changing I mean like only lasting 5 seconds, or going away all together.
 
Don't worry about it then, do the oil change soon and see how it does. In my experience, 3.4's and 3.1's get lifter ticking way more commonly than 3.8's but I have seen it.
 


Spray a hot and dry engine bay with a medium strength degreaser, wait 5-10 mins, cover the ICM and alternator to keep water out, and wash it off with a garden hose or power washer if you'd like but be careful. Might have to do it a second time and use a brush in certain areas
 
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