DISRUPTOR

Hi There
Can anyone identify that weird high pitch sound when i start the engine cold ?
The sound is worst when the weather gets colder (canadian winter). The engine starts fine then suddenly it does it. Wont do it when engine is started hot but you can hear kind of a whistling noise when reaving the engine.
Its not the belts, alternator,water pump,or pwr steering pump.
Thx for the help
http://www.youtube.com/watch?v=bcW57yM8gy0

vital22re

iTrader: (2)

so you took off one belt at a time? and it was still making the noise with no belts on?
Is it me or did i hear the timing chain rattle a bit?
You've isolated that the sound comes from the front eh?
Does it increase or decrease with rpms?
It just sounds like a squeeling bearing to me. what about the idler pulley for the pwer steering belt?

rworegon

Ouch....sounds like something (bearings?) being starved for oil. It's curious that it does not start immediately if it was something not being oiled. The oil level is ok though? What is the puff of smoke on the driver side near the firewall coming from?

vital22re

iTrader: (2)

he's got an oil leak. Thats oil burning off

rworegon

That's what it looked like to me too. Hence, why I asked about the oil level.

DISRUPTOR

Yep, both belts were taking off in same time,the timing chain (sprockets , guides , tensionner) were done 2 years ago, no probs there. The sounds is coming right in the front of the engine. Not the idler pulley either (no belt on it).
The sound you heard was at its loudest and fade out has the engine warms up cause when the temperature is mild it wont do it apart from the whistling noise present when the engine is running, but wont make much more noise when i increase RPM
Oil level and oil presure is fine
I really dont know....
Thx

ChefYota4x4

iTrader: (5)

So, you've run it with NO belts on it, whatsoever, right?

I could hear it almost YELP at first as it led into it's whining. I would THINK(just guessing guys, lol) that when cold, some bearings and their housings would have a lil more play, and possibly allow some non-intended/abnormal movement, ...but when warm, it's all expanded and lubed up(different viscosity too) and thus, it goes away?

That REALLY did sound like chain slap to me, too... but if it's new, I suppose it's less likely the case, eh?

I wanted to say, 'My failing water pump, WHICH WAS NEW, made almost EXACTLY that sound,..... Replaced it, done. Not suggesting that's your problem, especially if you've removed the belt there and still heard it, lol.

You, know, you could still have good Oil Pressure and yet have a Pump that's making noise, if the bearings are jacked. However, I just wonder,....didn't you say it's a nearly new chain set, etc.? Why wouldn't the oil pump be done at the same time?

Hope you find it soon...those can be as annoying as they can damaging(loud mysterious noises)....

Welcome to Yotatech,

Mark

vital22re

iTrader: (2)

i've heard that seals can sing. Like your crank seal. When its running, try to see if you can spray some wd 40 behind the crank pulley where the seal would ride.

Have you checked the distributer? That would be my next guess.

ChefYota4x4

iTrader: (5)

Have you taken a stethoscope to the thing, component by component, bearing driven part by ....so on??? BEST cheap investment I've made yet! lol. 12$ at O'Reilly's. I could have sworn I heard your fan running, then phase out...... is it not driven by a belt? Not sure it could make that noise when sitting still....but just throwing it out there.

ChefYota4x4

iTrader: (5)

You're right, V. I had a Ford that did that, and my buddy(a mechanic), explained it as "It's like when you run your finger on a crystal glass.... the friction causes vibration, which in turn creates a note.... and that's why it stays the same tone, regardless of how much you rev it." Hmmmmm, I wonder.

WD40? Really? Is that ok on the seal?.... No, really, I'm asking, ...NO IDEA, lol.

vital22re

iTrader: (2)

I've used wd40 for lots of diagnosing of belts bearings etc. I've never had an issue with it.

ChefYota4x4

iTrader: (5)

Thanks, good info

DISRUPTOR

When i made this video , the belts where put back on, i did not want to damage the engine

DISRUPTOR

I actually did.. nothing , found nothing

DISRUPTOR

Thx for the WD40 , ill try it.
Can a distributor do that kind of noise ?????

ChefYota4x4

iTrader: (5)

Hmmmmm, you know, it just might be able to do that noise. I know that's common with some older Fords and Jeeps.... and my Comet did a very similar noise. However, the Oil pump COULD also make that noise, as the drive bearings go out. Get a stethoscope or long screwdriver and start listening in there. Also, push down on the Distributor cap firmly while it's doing it and see if it goes away.

Can you try that and check back?

Best wishes, man, I hope it's something simple!

Mark

vital22re

iTrader: (2)

a distributer spins does it not? uses a bearing right? bearings fail all the time. make a friend with someone who has a known good distributer and swap it.