So engine is making a tick/ knock noise, only makes noise when truck is warm, I have replaced lifters thinking it was a bad lifter and no luck, I rand truck hard one night and oil pressure droppped to 2lbs and ever since then noise won’t go away. Motor only has like 16,000 miles on rebuild. Don’t know what do try next any help is appreciated

 

First of all....Make? Model? Engine?

 

97 k2500 suburban with the 454

 

Tried posting the video but it wouldn’t let me

 

What is the oil pressure now? How long did it stay at 2 lbs? Did you run when it was at 2 lbs?

 

As of now the oil pressure is normal on startup it’s 40+ lbs then one warm drops to about 15lbs. When it oringally happened I ran it for about 15 miles when I Pulled off an off ramp came to a stop and noticed oil pressure was 2lbs.

 

Well if you only have 2 psi oil pressure then either there's a rod/main/cam bearing out or your oil pump is fubar.

 

Ever since that one evening my oil pressure is up to normal operating pressure I’ll try to upload the video again

 

Here is the video