Diagnose please...

[bnsportsr33]

It's been 3 weeks and I still don't know whats wrong with my car. Please advise as to what this could be...

I have replaced rod bearings so it's not the bearings. I guess it could be main bearings but it goes away and it seems too fast for a bottom end knock.

I just took out the hydraulic lifters, cleaned them and put them back in the engine but I this video is before I cleaned them. So maybe just maybe that was the problem and it might be gone now but I have not started up the car yet, still putting timing belt back on etc..

I just want to get as many opinions as I can.

Does this sound like a bad injector at all? (not sure what that sounds like)

[99_SI]

Sounds like a dead lifter man. Did you test them as per fsm? Compress them with your fingers...should have lots of resistance


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[bnsportsr33]

Yea man I rebuilt them all couple days ago, just haven't been able to start it yet. So you think it was lifters? Quite fricken loud though I'll tell ya. My thinking though is if it was something more serious IE: bottom end or piston/bent valve something along those lines wouldn't it do it all the time. The fact that it goes away even for a split second and comes back leads me to believe its something silly.

I also did notice one of the nuts the very bottom one on my downpipe is only on finger tight. I'm going to snug that bitch up too. But this sound was happening before I replaced the blown turbo.

[bnsportsr33]

Also when I was bleeding them , I could not push them much with my fingers, but I used a small pick tool to press the ball down until the piston bottomed out, all the air bubbles came out and then it came back up on its own. Put that little cap on and could not push on lifter at all, hard as a stone but I heard that's what its supposed to do?

[rob_96]

Thats is main bearing knock man, lifter is a wayyyy softer tick

[Dragon Humper]

Mains dont knock or come and go like that. Only rods knock, if someone told you they had main knock or were trying to tell you that a noise you are hearing is that, they are mistaken. That is most definately follower tick. Get the thing back together and fire her up. They will make some noise for a while but ahould settle down after a minute or so...if the are working as designed.



Jon.

[bnsportsr33]

Appreciate your answer Rob but I think to myself if it were a main bearing wouldn't it make the noise all the time? The fact that it stops for a sec and comes back makes me think it's not bottom end. But who knows at this point.

[bobbo]

Sounds like lifters to me too. It can sometimes take even a few minutes at idle to pump them up especially if the car has been sitting for a long time. I've been told if you increase the revs and the higher oil pressure will help.
Good luck?

[99_SI]

There's a whole procedure to bleed them in fsm once the engine is running.
Will post it up later tonight , going back to the shop to do a carb on this Honda Ruckus...pos china garbaage


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[bnsportsr33]

Oh really there is a procedure to do them while the engine is running? In just the R33 FSM? I haven't seen that, would be appreciated if you could post that up. Thanks for all the help guys. I really just want to get this thing back on the road. I really hope it's not a big issue and something simple. It also sucks that my oil pressure gauge stopped working, I'll have to fix that somehow or buy a new one.

[Skym]

Sounds like a stuck lifter. Bottomend knock is like hammer against metal sound (when the bearing fails) and usually heard near rear of engine (where it commonly fails). Put a mechanics stethoscope on cam covers, only way to pinpoint it accurately.

[bnsportsr33]

Hmmm I wonder if it could be a broken exhaust manifold bolt? I found one at the very back of the engine near Cyl 6 and that is where it sounds like its coming from. I just use my fingers and i can here it making a lot of noise I can't imagine with engine running, it's like the washers n **** hitting the block... So could a broken exhaust manifold stud make all that racket?

[bobbo]

An exhaust leak at the head/manifold would make an ugly noise. Would get worse as it burned the gasket away.

[Skym]

Would hear a louder ticking sound.

Exhaust studs snap due to age (change them every 10 or so years or each 100,000 km rebuild) or due to exhaust swinging on engine (check for faulty exhaust hanger bushes and can put a flexi into front pipe, similar to what you see on Honda's to reduce swinging effect on exhaust manifold).

[bnsportsr33]

Well put it all back together and the sound is still there, even after trying to let it warm up for 10-15 mins.... sigh

I got a really loud squealing too from my belts... I'm assuming too tight? or too loose? I can't remember which one makes the loud squealing.