Well to start out, my 97 civic ( stock y8 engine), started making a knocking noise at around 3k rpms... Figured that it was low on oil and needed a change , which it was. So changed the oil, and put some of the Lucas Oil treatment stuff mixed with it also ( good stuff btw ), started it up and it wasnt that bad but it was knocking at around 2k rpms and then would do it again at higher rpms, idling and actually driving..

Then I took it for a test drive about 5 miles or so, and I slowed down for a turn, was going to try higher rpms to see if it was good or not, and it then starting making an inconsistant metal to metal noise.. Had my dad come tow me back, I'm trying to get an idea of what it is so i can do it tomorrow.

Its kind of hard to pin point where the noise is exactly coming from, cycl. 2 or 3 almost, but its hard to say.. tore down the head and it looked completely fine. Maybe rod knock,



What can I do?

 

Even if your not completely sure, or maybe an idea, post please.

28 views, 0 replies.

 

Its a long shot but I had a similar problem a long time ago with my '97 civic and it turned out to be a loose wheel. It would make noise at certain rpms and whatknot.

 

If it sound like it is coming from the head it could be valve to piston clearance. Possibly from timing that needs readjusted or valve that is no longer seated properly. or there is a chunk of metal in the cylidar wall. Most likely valve issue. This happened to a toyota of mine. every time I put oil in it the noice was reduced dramtically. I had a worn seal which causes oil to burn. Maybe piston to wall clearnce is less than optimal. Noises are heard at differnent rpms because the frequency of the contact may be so common we cannot audible detect the anoemle, while other time it is obvious. If it keeps coming back, it never went away.

I'd put my money on the timing.

 

I hope so...


@Civicracer , no it does it in idle to. But thanks for the replies guys, appreciate it very much.

 

how low on oil was it? doesnt sound like a very healthy motor.

 

if you can make a video We should be able to tell you what it is. if its knocking, then you probably spun a bearing. i spun one on my 2nd Y8 block after I built the motor. It would only knock from 2k+. But it still wore the bearing off and seized after a few hours of running while it was being towed (needed the power brakes).

 

Havent had it very long, and I'm pretty sure the kid before me, didn't even know how to change his oil, let alone know that he needed to.


But an update, just changed the oil again, as it was a little black, change all the spark plugs, put some techroline (fuel injector cleaner/ Octance booster) in with some more gas.... Timing was perfect, so ya..

Called a local repair shop, and they said it could be the exhaust gasket for the headers.... so ordered a part, and we'll see what happens from there.

If you have any suggestions or ideas what it could be, post them, cant hurt.

Thanks for all the help!

 

make a video

 

Alright next time im by it i will.

 

That Motor flush Treatment is one of the worst thing to do to your motor if it has high mileage. cause it does remove all the gunk in the motor, but if you never remove the oil pan to clean the gunk that dropped from the motor. Then your gonna clog up the screen on the Pickup tube. Which means no oil to the head, block, ect...

Same mistake i did. and Now my Rods are bad

When you started driving it did it ever flash the low oil Pressure light?

 

OHHH MOTHA****, That Knock is louder than my knock. Def a Spun Bearing not a bad rod. Ill give you 500 miles and thats when you'll have a hole on your block.

Do not Crank the Car anymore.

And Your better of getting another swap cause if your gonna fix it you'll need to polish the crank and get new bottom end.

 

Well to your other post, the oil pressure light didn't even turn on so...

And a spun bearing, replacing the exhaust gasket, was carbon build up around it and may have been a leak there...

And you for sure know i spun a bearing, not exactly sure the meaning of that.. But can anyone second that?

Thanks for all the replies, I appreciate it very much.

 

definately rod knock. time for new engine or rebuild current one.

 

Definite spun bearing. Y8s were notorious for spinning bearings, if you plan on rebuilding it see if you can find a Z6 crank, they solve most of the oiling issues.

 

Hmmmm, well I might be parting it out... Trying to determine if i want to dump some money into,sell it as is, or part it out...

If anything would anyone be interested in buying parts? Only aftermarket parts i have on it, are 5k HIDs, exhaust system ( spacing out on the name ) , Skunk2 short shifter, greddy headers, Spectre Cold air intake, and the rest are just mostly stock....

But what should i do, im not trying to dig myself in a hole money wise, if i did fix it, what price range am i looking at?

 

DIY around 200 - 400 for Parts and machining Crank or if you throw the rod threw your block.
1.5k+ for someone or place to do it.
I would get another d series long block its the cheapest option.

 

dont part it out, get a new motor end and ill put it in for ya

 

yea that motor is gone.