Help with engine tapping noise/ticking

[cuttytime1985]

Hi, I bought a 1985 Cutlass v6 231 144,000 miles and it makes a very light ticking noise when its idles but when I rev the engine to a certain rpm it makes a loud rattling noise and if I rev it higher you can't really hear it anymore, I cleaned out the egr/passages. I removed the belt from the smog pump because it was making noise, but I still can't figure it out. It sounds exactly like this car and does the same http://www.youtube.com/watch?v=Y7IF1-8sh74

Any help would be greatly be appreciated. Thanks.

 

[dan2286]

What is your oil pressure at? It could be a bad bearing.

 

[cuttytime1985]

I don't know I have regular gauges with only dummy lights.

 

[cuttytime1985]

Well i switched it out to rally gauges and tomorrow I'm going to swap out the oil pressure switch, one question though does my car have a vacuum distributor advance? or is it electronic. Thanks.

 

[dan2286]

Your dist. should be electronic with no vacuum advance if it is still computer controlled. In case you didn't know, the wiring for the rally gauges is different then the regular style gauges.

 

[cuttytime1985]

Well I put in the gauges and new oil pressure switch and my pressure is 60 at cold idle and when warmed up its around 31 in park, and when I put it in gear drops to about the middle of 0-30. Also whenever I put it in reverse the engine stalls out... Whats the normal operating temp for it?

 

[megaladon6]

check your harmonic damper, i've seen them do similar things.

 

[srercrcr]

Your oil pressure is normal.

 

[srercrcr]

The clicking is probably a sticky lifter. I ran some engine flush thru mine before changing the oil and after a few weeks it went away.

 

[bordercutlass]

Seafoam the sucker until it just about dies, and then take it out for one helluva bagging. Don't forget to check your exhaust manifold bolts for tightness. I had one that backed off (the retainer lock had rusted away) and it sounding like ticking.