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.
Friday, January 07, 2011 - 08:55 pm, by: Chris Prak(Carizma)
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?
Friday, January 07, 2011 - 09:43 pm, by: Chris Prak(Carizma)
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
Friday, January 07, 2011 - 10:14 pm, by: Chris Prak(Carizma)
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?
Friday, January 07, 2011 - 10:40 pm, by: Sebastian Grant(Saabg)
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?
Friday, January 07, 2011 - 11:38 pm, by: Chris Prak(Carizma)
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
Saturday, January 08, 2011 - 09:02 am, by: Matthew Sharpe(Madmatt)
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.
Saturday, January 08, 2011 - 04:23 pm, by: Chris Prak(Carizma)
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.
Saturday, January 08, 2011 - 04:27 pm, by: Chris Prak(Carizma)
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.