I have already searched up and there are some posts about this, but in October I overevved past the rev-limiter (misshift). So far dont think I have any power loss. I can feel some vibration in the clutch pedal and a little in the gas pedal when the car is underload. When revved at park, nothing. I need to know what visual symptoms there are. Sounds are just too ambiguous. If i am spinning a bearing, should i be burning oil? Someone on here previously said to remove the dipstick and see if smoke comes out. Does this work? Would a leak down and compression let me know? Could vibration be coming from valve problem? I dont always get this. When the car is fresh in the morning and i warm it up and go it is fine. I have this slight engine harshness only if the engine ran and then sat for about 45min and then I ran it again? Any help would be great? Save my enine.

 

Engine sounds ok. If the bearing was going, it would have gone by now. When they go, they go quick! You can run a compression check just to make sure you didn't bend a valve.

 

could valves cause the vibration and the slight engine harshness? i shift at about 4k on average, and my milege is around 260mi. how much are com and leak down tests?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vinuneuro &raquo;</TD></TR><TR><TD CLASS="quote"> could valves cause the vibration and the slight engine harshness? i shift at about 4k on average, and my milege is around 260mi. how much are com and leak down tests?</TD></TR></TABLE>

260miles per tank of gas?? Man, you need to lay off the gas pedal. I just got 377 on 13 gallons of gas. When no one is behind me....I shift at 2500rms. If someone is behind me...I will take it up to 3000 in 1st-3rd.

You are wasting A LOT of money in gas, man.

Oh, and I still do spirited drives....and I still get 370-390 miles per tank of gas.

 

i will. thanks for the reminder. I need it. How about anwering the other questions too.

 

if you spun a bearing its basiclly a load *** tick and it hard to explain but it feels like metal scaping metal on the gas petal! id say take the oil pan off and see if there are any loose feeling connecting rods!

 

should i be burning oil? i want as much diagnosis as possible before I have to do that.

 

i didnt burn any oil but i was low at first so i dont really know!

 

are there any other non-audio ways of finding out other than taking the pan off?

 

shouldnt it burn oil though? You would think so since the clearence arent right and things are moving smoothly?

 

Have you adjusted your valves since this happened? IMHO, I would do a compression test first & then if that turned out okay, I would do a valve adjustment.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vinuneuro &raquo;</TD></TR><TR><TD CLASS="quote"> shouldnt it burn oil though? You would think so since the clearence arent right and things are moving smoothly?</TD></TR></TABLE>

no, the only way to burn oil is if it gets into the combustion chamber which spinning a bearing won't do.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vinuneuro &raquo;</TD></TR><TR><TD CLASS="quote"> Someone on here previously said to remove the dipstick and see if smoke comes out. Does this work? .</TD></TR></TABLE>

NO, they are wrong normal engines can do that

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vinuneuro &raquo;</TD></TR><TR><TD CLASS="quote"> are there any other non-audio ways of finding out other than taking the pan off?</TD></TR></TABLE>

not really but if you dont hear a very loud knocking noise then i doubt it is a spun bearing

your best bet is to do a compression and leakdown test and if those numbers are unusual then fix that problem because it doesnt sound like your problem is comming from the bottom end.

David

 

It will burn oil, though not as much as bad seals and rings. if you have a spun bearing then it will get the crank and caps HOT. So when oil washes on them to cool/lubricate, it will burn but that is worst case scenario.

If you drain your oil into a clean pan then you can let it settle and see if there are metal flakes on the bottom of the pan. If your oil is "pearlescent" then you have problems.

the Pirate

 

Thanks all for replying. I just had some folloe up questions. A compression test wont tell me if i have a spun bearing or not right? I realyy do not have any knocking. You really have to pay really close attention to notice that there is engine harshness. Granted, my engine has only 60k on it. i can defintely tell a diffeerence from before and after overrevving. I am jsut trying to get an idea of where the prob is. By the way a valve adjustment was already done, after i overrevved. but they (the honda tech) wouldn't know if i had bent valves or not right? he wouldnt be able to tell that? How much of a difference would i be able to notice if i had bent valves. My idle seems fine to me. quite smooth. thanks for the replies.

 

a compression test won't really tell you if you have a spun bearing. but it will tell you if you have a bent valve. but if its running smooth then it doesnt sound like you have a bent valve because it would be running rough and you prolly dont have a spun bearing because it would be VERY noticable at ALL rpms. if the engine is only being harsh under load then i dont really know what that could be maybe something with the tranny? clutch? also check the timing and make sure its right on.

David

 

Your post is to vague

 

i just noticed something about the problem. When i first start up the car and run it (fresh). no problems at all. As i drive more and more i get the vibration more and more through the clutch pedal and get the egine harshness. I have noticed a lack of pedal pressure sometimes. Could this be a busted pressure plate and disc? Thanks all.

 

why dont you take it to a mechenic??

 

i would like to spare the money and figure it out myself. It is a learning experience!

 

by harshness what do you mean? like...a sliping clutch? that might be what is causing the problem. if you have it in nuetral does it still act funny? if not then it probably is your clutch. how many miles are on the car?

David

 

the engine has this harshness only when it is under load (in gear) above 3k ususally. I am suspecting cltuch because it gets worse as i dirve it more and more during the day. No problems when i start driving in the morning. It seems to get worse with every light i have to stop at and go. could this be because of having to work the clutch everytime? the car has just over 60k on it. As mentioned abive i did misshift and go to about 8500rpm. I am afraid i might have damaged the pressure plate and the organic on the disc.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vinuneuro &raquo;</TD></TR><TR><TD CLASS="quote"> the engine has this harshness only when it is under load (in gear) above 3k ususally. I am suspecting cltuch because it gets worse as i dirve it more and more during the day. No problems when i start driving in the morning. It seems to get worse with every light i have to stop at and go. could this be because of having to work the clutch everytime? the car has just over 60k on it. As mentioned abive i did misshift and go to about 8500rpm. I am afraid i might have damaged the pressure plate and the organic on the disc.</TD></TR></TABLE> well if you want t learn get off the comp and start pulling **** apart! (didnt mean to sound like dick)

 

It doesnt sound like a spun bearing. Does your tach jump around at high rpms?? You need to compression test to see if you have bent valves over revving the car or misshifting almost always gets ya some bent valves. I did the same thing recently. I had an upgraded pressure plate and disc so im not sure what the stock clutch could handle. So get yourself a compression test first and let me know how it goes.

 

im gonna do the c/r test. thanks man. why do prelude owners have this problem so much. really pisses me off that i take such good care of my car and **** it all away within a matter of seconds.

 

if it was a spun bearing u would know man... major loss of power.. knockin sound that goes away at higher rpm's.. sounds like somethin to do with pressure plate or up in ur head.