knocking and loud noises

[Nismo Moose]

welp here we are, my daily driver NA only had it a year now and it looks like it's been mistreated before I got her.
I have cleaned the throttle bodies, new alternator, starter solenoid, o2's, spark plugs, and did a balance test and it looks like each cylinder is firing correctly.

I have had a huge loss of power and alot of knocking and problems in just the past 2 months and I am really trying to diagnose what the problem is so i can fix it myself on my own time.

Any recommendations to do to her for maintenance wise?
Engine was replaced from water/salvage damage at 90k miles, i'm at 160k now.

And hopefully somebody can tell me what this knocking resembles or what I am looking at for prices for this repair.
[youtube]http://www.youtube.com/watch?v=V13ydLkSQoY[/youtube]

Thanks for any help guys, love the community and wish i could just get my NA to run decent for daily driver, eventually i'll go TT.

[nissanfreak12]

That sounds a lot like lifter tick. Have you tried using either the Z1 engine cleaning or ATF? You could just have sticky injectors, happens with age and /or sitting for a period of time.

Have you also check the ecu for codes? Not just seeing the check engine light, but physically pulling codes from the ecu?

[Nismo Moose]

haven't checked ecu code, don't know how to, I know the method for 95 and older but 96 doesn't have the same modes I believe?

I haven't gotten to do anything about the ticking yet, ATF in the oil or what?

I have OBD2 and I always have a egr code, just afraid to eliminate it but can't afford to replace. I reset the CEL every once in a while

[Nismo Moose]

bumping!

I did atf half quart and then oil change, still same noise and it gets louder as i push the throttle, sounding like a rattling/spinning.

[Nismo Moose]

BUMP!

[nissanfreak12]

What exactly did you do with the ATF? Did you let it run for a little bit, drive it, or anything to that nature? Its very possible you have a collapsed lifter, no amount of additives or cleaners will help that still in the car.

[Nismo Moose]

I ran it through for 3 days, only drove the car about 50miles or so, then did another oil change.

the knocking did go down quieter but then after oil change I can hear it again, not as loud, but the ATF seems to have made it alot quieter when it was in there.

[nissanfreak12]

Yep, sounds about right. Pretty much what I did, but worked great for me. Another thing to try is Z1's engine flush. Its like 15, but I have it does pretty good. If that doesn't work may have to look into new lifters.

What kind of oil and weight do you use? Where are you located?

[Nismo Moose]

I was using castrol gtx 10-30, maryland.

Z1 engine flush is nearly $30 idk where you got $15 from lol

[nissanfreak12]

Either they went way up or its been some time since I have looked at it. oh well, lol.

Have you tried thicker oil? Have you checked oil pressure with a mechanical gauge?

[Chattzx]

Definitively try a thicker oil. My cold lifter tick has never come back.

[stripling]

Hey bro, did you ever find out the issue with your car? Mine does the same thing - I tried motor honey and it seemed to quiet it for a while but now, 60 miles later, it's louder than ever.