Ok so i bought a 1993 Nissan 240sx! Its got 152,600 miles on the BONE STOCK KA24DE engine. It has the "marble in the tin can" noise coming from the front of the engine! So im pretty sure that its the upper and maybe side timing guide hittng/rubbing against the inside of the valve cover! I will post a video of it running on youtube tommorrow! I didnt take off the valve cover yet to see if thats for sure the problem! Mainly my whole question to everyone is... if i remove the guides (other than lower) from hitting the valve cover, will i still be able to daily drive my car, and still get on it, and revving high, without the timing chain ripping off?????? There is a link here on nico club that tells you exactly how to do it! Is this correct????? My car also seems as if its running kindav rough,like i never been past 4k rpm cause i feel the engine isnt running smooth, so i didnt want to hurt it! im gonna change the plugs, wires, and distributer cap soon, hopefully it will feel smoother when higher rpms! Also i know theres gonna be sludge inside of a engine that has 152k on it, so i want to know what kind of oil to use, and should i use any attitives like lucas oil stabilizer with it?? And does z max work?? I heard its suppose to clean slude out your engine, and make it run smoother???? Idk but if anyone knows of any attitives that i can put into it to clean slude out from inside of engine, let me know!
http://www.nicoclub.com/archives/fix-yo ... attle.html
Also i have a little bit of water spitting out of my exhaust! My friend told me that i may need to tighten the valves! How hard is that to do, and is that what the problem is?? Please let me know about this too!! Thanks!!!