Strange engine sound (video)
#1
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Strange engine sound (video)
So, last major job was the timing belt, the accessory belts and the rollers. Done by my mechanic who knows his stuff. However, changing oil this weekend with my head under the bonnet, I noticed that the engine is now making a faint but odd metal scraping noise. I made a video of it below to record the sound.
Does someone perhaps know what could be making that noise? Thanks in advance.
Does someone perhaps know what could be making that noise? Thanks in advance.
Last edited by concor; 04-10-2018 at 05:54 AM.
#2
Team Owner
shut if off and remove the belt covers take pictures as this done .
Disconnect the battery so the engine cant run untll this issue is fixed
Disconnect the battery so the engine cant run untll this issue is fixed
#3
Nordschleife Master
Something is not right.
I can't tell you if it's something outside the TB cover (accessories) or something under it (TB/WP/tensioner/oil pump).
Since it's an S2 (84 - 86 Euro), it's likely an interference motor. If the TB goes, so goes the motor.
I would tow it back to the shop and have them fix it.
Correctly this time. The job was either not finished or not done correctly.
Something was left undone or loose, or screwed up.
I can't tell you if it's something outside the TB cover (accessories) or something under it (TB/WP/tensioner/oil pump).
Since it's an S2 (84 - 86 Euro), it's likely an interference motor. If the TB goes, so goes the motor.
I would tow it back to the shop and have them fix it.
Correctly this time. The job was either not finished or not done correctly.
Something was left undone or loose, or screwed up.
#4
Rennlist Member
You might be able to localize it better with a mechanics stethoscope. That would tell you pretty quickly if it was accessory-related.
#6
Rennlist Member
Sounds like it is accessory related.
If you want to rule out accessories use white out to mark each belt and see if their appearance in view coincides with the sound.
If you want to rule out accessories use white out to mark each belt and see if their appearance in view coincides with the sound.
#7
Rennlist Member
That spinning fan made you jump hey, made me giggle
How many T-Belt jobs on a 928 has he done? I ask because I know of a "experienced and good mechanic" who called me saying he had to remove a Cam Gear to get the T belt on. When he stated he had to pass the belt "through" the tensioner arm, I knew exactly what he did wrong.
He was glad he didn't start the engine and called me to be sure, I got a big thank you and 12 pack for Fosters Dirty Bastard of my assist
Don't run it (like Stan said) until he looks it over his work else could be big issues if you continue to spin the wheel of chance.
Dave K
How many T-Belt jobs on a 928 has he done? I ask because I know of a "experienced and good mechanic" who called me saying he had to remove a Cam Gear to get the T belt on. When he stated he had to pass the belt "through" the tensioner arm, I knew exactly what he did wrong.
He was glad he didn't start the engine and called me to be sure, I got a big thank you and 12 pack for Fosters Dirty Bastard of my assist
Don't run it (like Stan said) until he looks it over his work else could be big issues if you continue to spin the wheel of chance.
Dave K
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#8
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pull the plastic air intake tubes and look down the breather hole of the timing belt cover...see if the belt is tracking correctly and if there are any unusual marks as it tracks. could be as simple as part of the front Timing belt cover rubbing on the balancer...or a misaligned idler... what ever the case, over time it will cause a bigger issue than you hear now. Our cars, like our bodies, often give us clues in advance that something isn't quite right... This isnt right.
#9
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Okay I am an idiot! The problem was not enough oil! After changing the oil and filling it up nicely between the two lines on the dip stick I thought I was done. I forgot to start the engine to fill up the oil filter and the rest of the engine and hoses. So it just had not enough oil!
I am so happy though that it was just this. I was tinkering for days about how to remove those timing belt covers. And who should be responsible, my mechanic or me. I do want to thank all the people here giving their thoughts and advice. I highly appreciate it. Now, and during the past 10 years I'm driving this car. And I can now go the meeting tomorrow of 'Opkikkerdag' which is something for families with sick children. Lastly here's a video of the 'new' engine sound:
I am so happy though that it was just this. I was tinkering for days about how to remove those timing belt covers. And who should be responsible, my mechanic or me. I do want to thank all the people here giving their thoughts and advice. I highly appreciate it. Now, and during the past 10 years I'm driving this car. And I can now go the meeting tomorrow of 'Opkikkerdag' which is something for families with sick children. Lastly here's a video of the 'new' engine sound:
#10
Team Owner
adding oil is not the going to make that sound go away.
if you filled the oil up to between the lines then you had more than enough oil in the engine to have it operate at idle,
it will fill the filter and cooler in about 20 seconds.
disconnect the battery .dont keep testing the belt .
and remove the belt covers post pictures of the belt run as the covers come off.
I am hearing noises that indicate something may not be right.
It should sound like this
if you filled the oil up to between the lines then you had more than enough oil in the engine to have it operate at idle,
it will fill the filter and cooler in about 20 seconds.
disconnect the battery .dont keep testing the belt .
and remove the belt covers post pictures of the belt run as the covers come off.
I am hearing noises that indicate something may not be right.
It should sound like this