Clicking / Ticking Noise - Diagnostic Help! - ZR-1 Net Registry Forums

72warbonnet · 10-28-2014

Problem: LT5 has just recently developed a pronounced "ticking" or "clicking" sound/noise that seems (via "stethescope") to be coming from under the right-side cam cover.

Facts: '95 stock LT5 (with Haibeck chip) at 13,500 miles. Just changed oil (Mobile-1, 5-w-30) and oil level shows fine at rest. One semi-long (and semi-fast!) trip since oil change. Noticed noise at the end of that trip (may or may not be related to the oil change...) Noise exists at start-up and remains when warm. Increases proportional to RPMs.

Question: From what I've read, it might be a collapsed lifter?? Other likely options and other recommended diagnostic checks??

THANKS!
Bill

10-28-2014	#1
72warbonnet Join Date: Jun 2011 Location: Hereford, Arizona Posts: 45	Clicking / Ticking Noise - Diagnostic Help! Problem: LT5 has just recently developed a pronounced "ticking" or "clicking" sound/noise that seems (via "stethescope") to be coming from under the right-side cam cover. Facts: '95 stock LT5 (with Haibeck chip) at 13,500 miles. Just changed oil (Mobile-1, 5-w-30) and oil level shows fine at rest. One semi-long (and semi-fast!) trip since oil change. Noticed noise at the end of that trip (may or may not be related to the oil change...) Noise exists at start-up and remains when warm. Increases proportional to RPMs. Question: From what I've read, it might be a collapsed lifter?? Other likely options and other recommended diagnostic checks?? THANKS! Bill __________________ Bill '72 Coupe '95 ZR-1 (#318) '03 50th Ann'y Convertible HISTORICAL FILES: '86 Coupe (4+3) -- SOLD 2013