Newbie with a 93

[Walter W.]

Hello to all,just wanted to introduce myself.I was wondering if anyone has herd of lifters going bad after only 47.000 miles.My 40th anniversary has just developed a slight ticking noise on the drivers side of Engine.Second part to question could it be a exhaust leak? Anyone else have or herd of this on the C4 engines.Engine runs Strong No miss very smooth Idle.

[Edward J.]

Re: Newbie with a 93

Walter, sometimes an exhaust leak can sound like a lifter, check the exhaust manifolds for loose or broken bolts, sometimes they tend to back out through the years of expansion and contraction.

[Pete B.]

Re: Newbie with a 93

It could also be the injectors ticking.

[Joseph K.]

Re: Newbie with a 93

A 93 is a nice car!!

I had a 92 with the same tick sound. I owned it for about five years and it always had that tick sound when it was generally cold. But when it got warm it generally went away. The always ran good and the tick never effected the performance.

[Tom H.]

Re: Newbie with a 93

Hi Walter !!

Welcome to the NCRS board ! I have bought and sold HUNDREDS of these cars and have never known them to have lifter issues. Not to say it can't happen, but I sure doubt that is what you are hearing. Keep us posted.

[Joe W.]

Re: Newbie with a 93

Walter,

Congratulations on your purchase! My wife and I haved owned our 40th since new and are very happy. We also had a ticking noise on the drivers side and found that the #7 valve was damaged due to a loose rocker nut. We had a little over 26,000 miles when this occured. It wouldn't hurt to have this checked as it may save you some money down the road.

Good luck,
Joe

[Joe L.]

Re: Newbie with a 93

A 93 is a nice car!!

I had a 92 with the same tick sound. I owned it for about five years and it always had that tick sound when it was generally cold. But when it got warm it generally went away. The always ran good and the tick never effected the performance.

Joseph------


The camshaft was changed from 1992 to 1993 for just this reason. Apparently, the ticking sound annoyed too many people. So, there were TWO fixes for it. First, as mentioned, the camshaft profile was changed. Second, the "composite" valve covers replaced the magnesium type used for 1992.

The 1992 LT1 camshaft was GM #10168506. The 1993 LT1 camshaft was GM #10224241.

[Joe L.]

Re: Newbie with a 93

Hello to all,just wanted to introduce myself.I was wondering if anyone has herd of lifters going bad after only 47.000 miles.My 40th anniversary has just developed a slight ticking noise on the drivers side of Engine.Second part to question could it be a exhaust leak? Anyone else have or herd of this on the C4 engines.Engine runs Strong No miss very smooth Idle.

Walter------


Check the AIR fitting that threads into the exhaust manifold. Very often, these will get quite loose and may cause an exhaust leak.

[Bill M.]

Re: Newbie with a 93

The camshaft was changed from 1992 to 1993 for just this reason. Apparently, the ticking sound annoyed too many people. So, there were TWO fixes for it. First, as mentioned, the camshaft profile was changed. Second, the "composite" valve covers replaced the magnesium type used for 1992.

The 1992 LT1 camshaft was GM #10168506. The 1993 LT1 camshaft was GM #10224241.

The ticking sound was supposed to emulate the sound of the mechanical cam in the '70-'72 LT-1; never worked for me. I miss the 6500 rpm redline too...

[Walter W.]

Re: Newbie with a 93

Thank you for all of your responces.This Weekend I'm going to get under the hood,the ticking is driving me Bonkers!.Looks like a PIA to take off the Alternator to take the Driver side Valve Cover off.The ticking today as I drove with the Window down sounds Metalic.I'll keep you all informed.Thanks again.