Well my *new* Classic that i bought is not doin so hot. I replaced the worn cams and it was running right other than really loud rocker arms that were awaiting replacement. I was out driving and it kept stalling when i would come to a stop. I also noticed the bad clanking sound (which i attributed to the rockers) was getting alot louder. I kept starting it up and driving in an attempt to get home (It was about 3am). eventually it just would not start anymore. I went over this morning and it fired right up. Also sounded absolutely HORRIBLE. The loudest sounds Ive ever heard come out of a running engine. I shut it off and sadly drove back home. Looks like I will be cruisin around in the NX for a while. Any Ideas of where to start locating the problem?? Or is the engine shot (It has 168K)?? TIA.

Mike

www.geocities.com/serban91r/rattle.wav
(copy and paste the link)

If it sounds like that, its a spun bearing :(

Did you bleed the HVLA when you changed cams?

Where is the sound coming from? If its coming from underneath the VC, then take it off and have a look at the cams, rockers, hvla's, etc.

You may have spit out a rocker arm and/or shims. Pull the valve cover and take a good look around. If it did spit out any shims out, and you can't find them all, drop the oil pan, they'll probably be in there.

While you're in there, check to see that the tensioner popped out.

Chris

Originally posted by SupaBlackNX2k
Any Ideas of where to start locating the problem??
Try under the hood:D

Seriously, your best bet is an engine swap. At $300-$500 for a JDM engine it'll be cheaper than fucking around trying to repair the original and you'll end up with one with far less mileage.

Originally posted by charlie2020
Did you bleed the HVLA when you changed cams?


:confused: In regards to what?

Well the sound was coming from under the valve cover but it ran fine. Now its coming from everywhere. Its so loud and obnoxious that i couldn't pinpoint it at all. I did not bleed the HVLA's but i dont think that would have caused my problem. Im gonna check that sound clip that serban posted right now. It would surprise me though if it was a bearing because i was told they were just replaced on the car.

Mike

Unfortunately it sounds like Serbans Clip so i think its the bearing. So much for them being replaced...:rolleyes:

Mike

that means they prolly put some shit in there to shut them up. you can't trust shit anymore. not to go off topic though but I just saw a bottle of Smokeless motor oil.
Used car dealer+smokeless motor oil=getting your arse takin

hope you find your problem, but the JDM motor sounds like a great easy way to solve your problems and get some more hp

are you sure its the rocker arms? it might be a collapsed lifter, try using a bottle of lucas oil treatment, the really think stuff, and if that helps then its most likely the lifters.

Here is how to check for a spun bearing. 1 start the car. 2 pull each plug wire out one at a time. 3 if the noise dissapears when you disconect the plug wire thats the one that is spun ( on my old motor if you pulled plug wire #2 the noise stopped and what do you know a month later the rod comes out of the block making two nice holes in the process mind you) anyway if it stops at any point after pulling a certain wire out that is your faulty bearing. step 4 buy a JDM motor

yeah sounds like a spun bearing to me, i had the same problem, starts off small, then over time gets louder and louder, then loses power then cuts off, then wont crank. i dont think you can go wrong with a jdm

where is the best place to get a JDM motor?

soko, or watanabe, do a search you should come up with a few more.. i dont know which is best though

$5 says its a spun bearing in number 3. that's a guess by the way. that's what happened to my engine when i heard those noises. rod number 3 went through the side of the block.
knock knock.
who's there?
i forget how the rest goes. cylinder number 3