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Chris Prak
DieHard
WA
JZZ30 Soarer - Twin Snails

Posts: 912
Reg: 12-2006

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Friday, January 07, 2011 - 07:22 pm, by:  Chris Prak (Carizma) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Watch this video:

http://www.youtube.com/watch?v=Qes1SR3payI

Can anyone care to enlighten me on what this means?

I only just did an engine swap, warmed up and running for 1 hour. Took her out for a drive everything was fine, VERY smooth 1JZ, didn't have any odd symptoms. Pull up to BP to fill up, just about to open the fuel lid, she dies, no stuttering or warning, just cut of like I turned the key. I thought "Hell yeah, that was convenient". Go to start it back up and I hear that hum noise from the video. Initially It was only a small hum at the beginning of the crank and I pin pointed the noise to be coming from the Air Filter. Now I have removed all piping for the turbo and the noise will continue as I crank. I initially thought I may have left a rag somewhere, but how can that be, if it was running like a dream before.

Motor turns by hand, I Have checked timing belt at least 5 times, all pulleys spin during crank.
Austen Menze
Goo Roo
WA
GT-TL

Posts: 1417
Reg: 07-2009

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Friday, January 07, 2011 - 08:23 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

oh man :-(
Chris Prak
DieHard
WA
JZZ30 Soarer - Twin Snails

Posts: 913
Reg: 12-2006

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Friday, January 07, 2011 - 08:55 pm, by:  Chris Prak (Carizma) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yeah oh man. Was too good to be true. Just about ready to torch this thing. Taking turbos off now and gonna try to start it. Just hope its not internal, but I don't think it is because it turns over fine by hand and doesn't make that noise. If I keep cranking, stoppin, cranking stopping, the noise will go away. But it I leave it for more than 2 seconds before the next crank, the noise will sound. Did someone leave their horn in my motor?
Austen Menze
Goo Roo
WA
GT-TL

Posts: 1418
Reg: 07-2009

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Friday, January 07, 2011 - 09:08 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I'm thinking the throwout thingy in your starter motor may not be retracting so its stuck on the flywheel, but that kinda makes a different noise.

Did you use the garden hose trick to find out where its coming from?
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder

Posts: 6034
Reg: 03-2006

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Friday, January 07, 2011 - 09:08 pm, by:  Daniel Clarke (Dieseltrain) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Wow , thats weird as . Never heard that sound before .

Water levels ok ? Blown turbo ?
Sebastian Grant
Goo Roo
nsw
soarer TT

Posts: 1461
Reg: 01-2008

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Friday, January 07, 2011 - 09:15 pm, by:  Sebastian Grant (Saabg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Is it coming from your pcv?
Austen Menze
Goo Roo
WA
GT-TL

Posts: 1420
Reg: 07-2009

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Friday, January 07, 2011 - 09:24 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Seb, are you thinking it may be cams rubbing the journals?
Chris Prak
DieHard
WA
JZZ30 Soarer - Twin Snails

Posts: 914
Reg: 12-2006

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Friday, January 07, 2011 - 09:43 pm, by:  Chris Prak (Carizma) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Starter recon'd 2 days before old motor it died.

Haven't used the hose but I had a mate earlier. It's definitely on the exhaust side. When all the piping was on, it was coming from the air filter, and you could only heard it once at the start of the crank. Now with everything off, its continuous.

What is the PCV? The bit linking the cam covers? I usually run an oil catch can from the drivers cam cover, and when I blocked it, it made no difference. Cam rubbing journals? What are the journals?

New engine AGAIN?? This one only lasted say 60km of road use. lol
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder

Posts: 6035
Reg: 03-2006

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Friday, January 07, 2011 - 09:53 pm, by:  Daniel Clarke (Dieseltrain) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Cam bearings running dry , metal on metal rubbing sound is what they are talking about .

Still wont fire ? Try removing 1 spark plug at a time and listen with a hose ? See if you can pin point a certain cylinder ?

Even try removing all plugs and turn it over .
Chris Prak
DieHard
WA
JZZ30 Soarer - Twin Snails

Posts: 915
Reg: 12-2006

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Friday, January 07, 2011 - 10:14 pm, by:  Chris Prak (Carizma) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Possible. I'll try that tomorrow. The motor I just bought was in Storage for a while so maybe it did go dry. How would I go about lubricating them again? Doesn't oil travel up into the covers anyway?

Why would the noise be coming from inside the chamber in the first place?
Austen Menze
Goo Roo
WA
GT-TL

Posts: 1421
Reg: 07-2009

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Friday, January 07, 2011 - 10:27 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Chris Prak wrote on Friday, January 07, 2011 - 10:14 pm:

Doesn't oil travel up into the covers anyway?




It sure does!
Sebastian Grant
Goo Roo
nsw
soarer TT

Posts: 1462
Reg: 01-2008

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Friday, January 07, 2011 - 10:40 pm, by:  Sebastian Grant (Saabg) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Austen Menze wrote on Friday, January 07, 2011 - 09:24 pm:

Seb, are you thinking it may be cams rubbing the journals?



That's my guess. My car used to make a similar noise on start up when I was running 20w50 oil, changed to royal purple 10w40 from memory and the noise went away. I never really thought about it much until now.

This wouldn't be enough to stop it firing though as it's turning over so you probably have another unrelated problem. What oil are you running?
Austen Menze
Goo Roo
WA
GT-TL

Posts: 1422
Reg: 07-2009

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Friday, January 07, 2011 - 10:45 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Sebastian Grant wrote on Friday, January 07, 2011 - 10:40 pm:

What oil are you running?



Olive oil? Leftover Ky jelly?

Chris bust out the garden hose, it's about the only way you can pinpoint exactly where the noise is coming from!

Oh.. cam gear rubbing on loose timing belt cover backplate maybe? But wouldnt cause it not to start.
Chris Prak
DieHard
WA
JZZ30 Soarer - Twin Snails

Posts: 916
Reg: 12-2006

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Friday, January 07, 2011 - 11:38 pm, by:  Chris Prak (Carizma) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

How about the rear of the motor. The only things I touched back there were the flywheel, which bolts to the torque converter. Pretty simple really, no fluids or anything fancy. And it WAS running.

I use a special blend of oil that a lot of people I know swear by. 15w
Matthew Sharpe
Goo Roo
North Island
JZZ31

Posts: 6164
Reg: 10-2005

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Saturday, January 08, 2011 - 09:02 am, by:  Matthew Sharpe (Madmatt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Always a good idea to disable spark and run up the oil pressure on the starter motor on an engine that has been sitting. Its possible if you didn't do this there could be damage, but I don't think it would show so quickly or so noisily.
Chris Prak
DieHard
WA
JZZ30 Soarer - Twin Snails

Posts: 917
Reg: 12-2006

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Saturday, January 08, 2011 - 04:23 pm, by:  Chris Prak (Carizma) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yeah I turned it by hand 4 turns then cranked it for 30secs without ignition as well as dropping a bit of oil onto the top of the cylinders. Cams seem to well and truly be lubricated, turning by hand is good. Can really feel and hear the compression but will get a gauge on there soon as I can.

Any other ideas guys? I'll pop off the cover to access torque/flywheel to see if its all good for peace of mind.
Chris Prak
DieHard
WA
JZZ30 Soarer - Twin Snails

Posts: 918
Reg: 12-2006

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Saturday, January 08, 2011 - 04:27 pm, by:  Chris Prak (Carizma) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Not fuel related you think? It was old fuel but I only reved the motor to max 5k rpm and didnt show any signs. Was running so smooth at the lights I had to keep checking the RPM to see if it was still on.
Austen Menze
Goo Roo
WA
GT-TL

Posts: 1425
Reg: 07-2009

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Saturday, January 08, 2011 - 05:03 pm, by:  Austen Menze (Mercyfulfate) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I don't think bad fuel would make a sound like that!
When I had bad fuel it just missfired a high boost+high rpm.

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