1998 Toyota Corolla combustion chamber pressure

Tiny
MHAYYAD
  • MEMBER
  • 1998 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • MANUAL
  • 75,000 MILES
I made device able to Measurement The combustion chamber pressure like your site was publish
i have "2e" toyota engine type 1300cc
i need to know how much the pressure (psi or bar) should I have in my engine
.
if you have a Measurement table for all engines sort by cc
thanks for your efforts
Tuesday, June 8th, 2010 AT 3:57 AM

5 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Compression can run between 150 and 190psi depending on compression ratio.

Most important is that they all be the same number or within 10%.
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Tuesday, June 8th, 2010 AT 8:20 AM
Tiny
MHAYYAD
  • MEMBER
  • 35 POSTS
Compression ratio to my car is 9.1
my engine performance is
very excellant
gas usage and
accelleration
75000 K.M
i adjust the spark plug for 0.7 mm
but when I measure The combustion chamber pressure for frist one is 80 PSI
is this ok with my compression ratio
and I need the relation betwen compression ratio
and combustion chamber pressure
regards
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Tuesday, June 8th, 2010 AT 11:50 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Compression should be 140psi.

On cylinder with 80psi, remove plug, pour a teaspoon of oil in, replace plug and try compression test again, if it goes up, then rings, if not then valve.
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Wednesday, June 9th, 2010 AT 8:03 AM
Tiny
MHAYYAD
  • MEMBER
  • 35 POSTS
I apologize for the inconvenience of repeated
I did not put by the oil inside the combustion chamber, but
why lay it down?
I do not complain of the performance of the motor
There is no smoke and no fuel consumption and high
i tested 4 cylinder it is the same
i use the same advice to measure the tire Pressure
it is OK?
Thank you
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Thursday, June 10th, 2010 AT 8:21 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
If compression is OK, then I would not worry.

Adding oil to combustion chamber is called a "wet" compression test, and will tell you if rings are bad.
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Thursday, June 10th, 2010 AT 8:25 AM

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