I have never heard this sound before until recently. Over the summer i replaced the disributer cap, plugs, and wires. Everything was fine.. until a few weeks ago. It doesn't do it all the time, sometimes as soon as i start up, other times only when i have been driving for a while. Its a clicking sound that varies with RPM. It sounds like its coming from the middle of the dash, but i am not sure. I can't hear it from the engine bay since there is a lot of noise in there anyway (the injector ticking covers it up) I thought it was my blower motor (it has made a similar noise before) but i know its not it. Does anyone have any ideas as what it could be?! Its driving me nuts and its also worrying me.

 

I suppose it could be a spark plug wire arcing. That would vary with the rpm. One of mine was arcing and I could hear it from inside the car.

------------------
91 Z28
Come see The Vicious...

 

Maybe a collapsed lifter.

------------------
"Rice burners are like tampons...Every pu$$y has to have one"
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat, just switched to 180* b/c of winter coming and going to college in the mts.
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite

 

I don't think its a wire arcing, i have no loss of performance... but i will check.

A colapsed lifter? Ummm... that sounds bad. How would i check that? Could it be intermitant like i am experiencing?

 

Not sure if it can be intermittent. It's not good but you could drive around with it, not sure if it causes permanent damage though. Start the car and see if the sound is coming from the valve covers.

------------------
"Rice burners are like tampons...Every pu$$y has to have one"
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat, just switched to 180* b/c of winter coming and going to college in the mts.
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite

 

if you get a hole in your exhaust manifold then it will click, but that means that the clicking would happen all the time.

------------------
late model 91 rs, fully loaded, auto, t-tops, red leather, paint- gm red and yellow blend (light red), custom painted 16" Camaro rims
305 tbi flat base 14"x3" with K&N, hypertech chip, accel super stock plug wires, only use full synthetic oil and delco filter, 2 1/2" cat delete pipe, Edelbrock 3" cat-back
MTX sub and amp, Bose all around
vic_v8@yahoo.com
street kills: New v-6 stang, 96 v6 camaro, totally killed '86 SC Camaro (305), 91 z 28 with 305
15.854@87.57 (I think I could have it 15.5 with good tires and two more runs)
next month: rest of ultimate tbi

 

if you get a hole in your exhaust manifold then it will click, but that means that the clicking would happen all the time.

------------------
late model 91 rs, fully loaded, auto, t-tops, red leather, paint- gm red and yellow blend (light red), custom painted 16" Camaro rims
305 tbi flat base 14"x3" with K&N, hypertech chip, accel super stock plug wires, only use full synthetic oil and delco filter, 2 1/2" cat delete pipe, Edelbrock 3" cat-back
MTX sub and amp, Bose all around
vic_v8@yahoo.com
street kills: New v-6 stang, 96 v6 camaro, totally killed '86 SC Camaro (305), 91 z 28 with 305
15.854@87.57 (I think I could have it 15.5 with good tires and two more runs)
next month: rest of ultimate tbi

 

Hmm, i hole in the exhaust manifold... i hope not, but then again it could be time for some HEADERS!!!