WHAT IS THIS SOUND? please.(Another Video!)

This is the place to ask questions about your engine components like cams, valves, pistons… just anything that is generally "engine" specific. This also includes questions about exhaust systems such as exhaust manifolds, piping size, mufflers, ect...
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RobsProjectSOHC
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WHAT IS THIS SOUND? please.(Another Video!)

Post by RobsProjectSOHC » Wed Jul 04, 2012 8:21 pm

http://www.youtube.com/watch?v=miDXj2pe ... e=youtu.be



Started it up this morning and this came about. check oil, was low..filled it...even did oil treatment and is the same or little bit quieter. very little. but everytime i start it up its loud as hell.

-My clutch is bad, getting it replaced
-and i think i have close to clogged cat, soon to be replaced.
-also running the evap codes 0456 and 0441...

With this knowledge, what could it be?
Only thing i can think is maybe skipped a tooth or one of the lifters is just fucked. -but im not a mechanic. lol
Last edited by RobsProjectSOHC on Thu Jul 05, 2012 8:17 am, edited 2 times in total.
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Post by RobsProjectSOHC » Wed Jul 04, 2012 10:14 pm

I dont mean to spam, but I rather not drive like this.
Please, anyone?
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Post by occasional demons » Wed Jul 04, 2012 10:48 pm

IDK, it sounds like all the lifters. Just one would be a totally different noise.

Cam timing wouldn't do that. Does your oil light function? It should come on when you key on, go off once running. If the oil was just low, it shouldn't have affected it, unless it was 4 quarts low. Even then if the oil light went off.... And you didn't drive it across town, it shouldn't have done that.

Possibly there is something blocking oil flow to the head. Or some how all the lash adjusters trashed at once. If there is good flow to the head, then you may have to replace all the rockers.

If you keep running it with that much valve lash, it will eventually damage the cam lobes. Or possibly break a rocker. Because the cam is hitting the rocker higher up on the ramp, kind of like a ball bat hitting the ball at half bat, just not quite that extreme.
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Probably shouldn't listen to anything your penis says, that guy's a dick.
Patience, of course, is a very powerful weapon, but sometimes I start to regret that it is not a firearm.
Too much time spent here is a sign of a bad case of Ownaneonvirus.

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Post by Donkeypuncher » Wed Jul 04, 2012 10:55 pm

:withstupid:

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Post by dtjackten » Wed Jul 04, 2012 11:20 pm

that sounds like a rod knock.... or even a timing belt slapping the timing cover.... how low of oil was it??? like two quarts? or like 1/2 quart....

i would not run it honestly rob... i am going to look at the video a few times again...
304whp and 285 ft lbs.... 15psi.
*on the way to 400whp*
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Post by Donkeypuncher » Thu Jul 05, 2012 6:30 am

It thought it cycled a little fast to be a rod knock, but it's hard to tell. Might be easier to hear the rod knock from the bottom of the engine.

There was a similar post not too long ago and it was some part of the valvetrain, can't remember exactly what part.

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Post by occasional demons » Thu Jul 05, 2012 7:33 am

It was one broken rocker/lash adjuster.
Bill
Probably shouldn't listen to anything your penis says, that guy's a dick.
Patience, of course, is a very powerful weapon, but sometimes I start to regret that it is not a firearm.
Too much time spent here is a sign of a bad case of Ownaneonvirus.

2000 Neon MTX swap with '02 R/T PCM
1999 neon coupe 2.4 swap

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Post by RobsProjectSOHC » Thu Jul 05, 2012 8:11 am

I took the valve cover off, found this little information. Is this the cause?

Link: http://youtu.be/2uRZjSuVLAo (might still be updating, uploading as i type this)

The head had tons of oil when i picked up the cover, just this seemed odd to me. Up and down i know is a problem, side to side?

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Post by NEON PARABOLA » Thu Jul 05, 2012 10:53 am

Now you've got me wondering about the sound under my hood, sounds ALOT like the noise you made when you moved them back & forth. may have to take my VC off and check that out
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Post by RobsProjectSOHC » Thu Jul 05, 2012 12:22 pm

Well I got new ones over night'd thanks to dave. Has helped me through this whole build, cant say thanks enough.

I will be doing the replacement tomorrow, ill be sure to take pics and more vids. I really hope this is the answer to it all.
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Post by silverneontuner » Thu Jul 05, 2012 9:12 pm

i replaced my cylinder head last summer, it sounded exactly liek that for about an hour then it shut right up

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Post by occasional demons » Thu Jul 05, 2012 9:44 pm

The side to side play, you may be able to adjust out by loosening the shaft bolts and moving the spacers. I'm thinking you got air in the lash adjusters from being low on oil, and it hasn't worked it's way out, if the lash adjusters aren't already done.

You could try to submerge them in oil, and manually pump them by hand. I would do that with the ones you are getting anyways.

Be sure to put the rocker shafts on right side up, and check them for galling where the rockers ride.

If you get them upside down, you will be doing this all over again.
Bill
Probably shouldn't listen to anything your penis says, that guy's a dick.
Patience, of course, is a very powerful weapon, but sometimes I start to regret that it is not a firearm.
Too much time spent here is a sign of a bad case of Ownaneonvirus.

2000 Neon MTX swap with '02 R/T PCM
1999 neon coupe 2.4 swap

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Post by RobsProjectSOHC » Thu Jul 05, 2012 10:09 pm

anybody have the torque specs for the bolts by any chance?
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Post by occasional demons » Thu Jul 05, 2012 10:19 pm

28 N.m/250 in.lbs

I just snug them down by feel. But understandably, some folks "feel" doesn't kick in until the threads come out with the bolt. :lol:



Torque sequence:

5...3...1...2...4

5...3...1...2...4
Bill
Probably shouldn't listen to anything your penis says, that guy's a dick.
Patience, of course, is a very powerful weapon, but sometimes I start to regret that it is not a firearm.
Too much time spent here is a sign of a bad case of Ownaneonvirus.

2000 Neon MTX swap with '02 R/T PCM
1999 neon coupe 2.4 swap

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Post by RobsProjectSOHC » Thu Jul 05, 2012 10:20 pm

thank you very much sir. Going to be fun to do, since ive never really worked on cars before. lol
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Post by stdlystdmufn » Thu Jul 05, 2012 10:57 pm

they aren't bad but they will spin around the shaft as you are moving them around. also before you put the valve cover back on i would pull the ASD relay from the fuse box in the engine compartment and crank the engine over until you see oil coming out of the top bleeder holes of the rocker arms.
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Post by occasional demons » Fri Jul 06, 2012 3:14 am

Removing the spark plugs will make that easier on the starter/battery.
Bill
Probably shouldn't listen to anything your penis says, that guy's a dick.
Patience, of course, is a very powerful weapon, but sometimes I start to regret that it is not a firearm.
Too much time spent here is a sign of a bad case of Ownaneonvirus.

2000 Neon MTX swap with '02 R/T PCM
1999 neon coupe 2.4 swap

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Post by RobsProjectSOHC » Fri Jul 06, 2012 3:31 pm

Ended up one of the bolts that holds the spacer down was stripped....retapping it, hopefully that will fix the problem. DBTP- "Dave by the phone" service is A+ by the way, lol. will keep you updated
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Post by RobsProjectSOHC » Fri Jul 06, 2012 4:40 pm

Updated: Tapped in the thread, worked great. Put it all back together, makes the sound just a little bit less. I was scared starting it up thinking i fucked something up and i think now its time to bring it to a professional.
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