LIFTERS!!!!!!!!!!!!!!!!!!!!!!!

**Viper** · 04-12-2013, 11:42 PM

An old mechanics stethoscope helps locate knock sounds to determine with the engine running if the sound is from the block crank area or the Cylinder head and lifter valley. Spun rod bearing usually a deeper knocking sound. Ticking is usually cracked sparkplug or split wire exhaust leak etc. Vacume guage also helps to diagnose a steady tic could be a burned valve etc. Use a good flashlight inspect the cam lobes where the sounds location is perceived. If a bearing spun or rod knocking check the oil filter for metallic particles I put old large speaker magnets on mine to trap more debris in the filter.

***popo8*** · 04-13-2013, 12:42 AM

We have confirmed there is no loss in oil pressure right??? u said first line up from the bottom at idle...thats 20psi... thats great oil pressure on an lt1

Larry (Popo8) Co-owner
LTXtech.com

**zooguy** · 04-13-2013, 01:53 AM

i can confirm that he has great oil psi ...

***popo8*** · 04-13-2013, 08:08 AM

ok...so with that being said...all u are chasing down is a noise...correct? there is no loss in performance?

Larry (Popo8) Co-owner
LTXtech.com

**cholmes729** · 04-13-2013, 09:03 AM

I agree, I wish mine had 20 psi at idle hot. You try running it with the belt off to see if possibly there is an accessory causing it, I am thinking more of an exhaust leak