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Metal noise when attempting to start new engine

Tiny
POLO17
  • MEMBER
  • 2007 VOLKSWAGEN POLO
  • 1.4L
  • 3 CYL
  • TURBO
  • 2WD
  • MANUAL
  • 90 MILES
Put a new engine in as old one had cam belt damage. It turns over but has started making a scrapping noise sounds like metal. It ran for a short time but would not stay idling. Now we have this horrible metal sound when trying to start.
Monday, August 20th, 2018 AT 1:12 PM

4 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It sounds like the starter is not disengaging, but to be sure can you please shoot a quick video with your phone so we can hear the noise? That would be great. You can upload it here with your response.

Cheers, Ken
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Wednesday, August 22nd, 2018 AT 11:49 AM
Tiny
POLO17
  • MEMBER
  • 3 POSTS
The noise gets louder, but it has also ran for about five minutes with revs held on.
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Saturday, August 25th, 2018 AT 5:10 AM
Tiny
POLO17
  • MEMBER
  • 3 POSTS
Now it will not start just turns over.
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Saturday, August 25th, 2018 AT 5:12 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Oh ya, thanks for the videos they really help. I looks like you may have a blown head gasket between two cylinders but to be sure lets do a compression test. Here is a guide to help diesel engines have higher compression but it should still be uniform:

https://www.2carpros.com/articles/how-to-test-engine-compression

Please run down this guide and report back.

Cheers, Ken
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Saturday, August 25th, 2018 AT 1:11 PM

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