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Every thing was fine but when accelerated it went down instead boost up and some time engine shutdown

Tiny
SUMRINA ZAFAR
  • MEMBER
  • 2000 DAEWOO MATIZ
  • 0.8L
  • 3 CYL
  • 2WD
  • MANUAL
  • 115,000 MILES
We overhauled engine, new piston and ring, new valve, new fuel pump, fuel injectors, new spark plugs.
When we started engine it was normal at start on idle.
Monday, November 25th, 2019 AT 10:14 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hello,

It sounds like the exhaust system is clogged. To be sure here is a guide to help us confirm the issue:

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please run down this guide and report back.

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Wednesday, November 27th, 2019 AT 2:46 PM
Tiny
SUMRINA ZAFAR
  • MEMBER
  • 2 POSTS
Exhaust all okay. But decline of combustion still there.
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Friday, November 29th, 2019 AT 10:14 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
It sounds like the camshaft timing could be off a tooth. Lets do a compression test to see if the engine is okay. here is a guide:

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

Please run down this guide and report back.
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Sunday, December 1st, 2019 AT 1:25 PM

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