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Old 09-15-2018, 12:17 PM   #1 (permalink)
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Default Compression

Hi,

Can anyone tell me what must be cylinder compression for Suzuki SX4 Sedan, year: 2012, automatic transmission, Engine 2.0

I'm waiting for reply.
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Old 09-15-2018, 06:15 PM   #2 (permalink)
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Depends on mileage, but 180 should be good.. Important that they are all close

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Old 09-15-2018, 06:55 PM   #3 (permalink)
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Quote:
Originally Posted by aquanaut20 View Post
Depends on mileage, but 180 should be good.. Important that they are all close

… Philip

Thank you for your answer.
My car has arount 85.000 milage and I wonder if it is fine 150 compression?
To repeat, my car is: Suzuki SX4 Sedan, Year: 2012, Automatic transmission and Engine 2.0
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Old 09-15-2018, 07:26 PM   #4 (permalink)
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Disconnect coils, fully charged battery Wide Open Throttle, <------- this is where most go wrong.
crank until gauge stops rising, about 4 compression's per cyl usually. Should be 170 to 180 ish, no more than 15 psi imbalance, if you have imbalances greater than 8 psi, wet test, teaspoon of new engine oil down the plug hole, re-do test, oil each cyl just before you test, if pressures rise, rings are worn, if they stay the same, suspect valves are not sealing properly.
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Old 09-15-2018, 11:42 PM   #5 (permalink)
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You omitted the most important prerequisite...remove ALL spark plugs.
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Old 09-15-2018, 11:52 PM   #6 (permalink)
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Quote:
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You omitted the most important prerequisite...remove ALL spark plugs.
well, considering the compression tester has to go somewhere....I took that as a given. But yeah, all plugs out as well.

and Max.....
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Old 09-16-2018, 02:30 PM   #7 (permalink)
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Unfortunately I did not get the answer.

My question was:
Can anyone tell me what must be cylinder compression for Suzuki SX4 Sedan, year: 2012, automatic transmission, Engine 2.0, 85.000 milage.

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Old 09-16-2018, 02:44 PM   #8 (permalink)
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But you did, with the diagnostic norm answer of.... "Should be 170 to 180 ish, no more than 15 psi imbalance"

If still in doubt, 'Google' a video on the testing subject complete with pics and narrative.
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Old 09-16-2018, 05:00 PM   #9 (permalink)
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You have a J20A engine - the compression numbers for the J20A are standard 199psi, lower limit 170 psi, max differences between cylinders 14.2 psi.

These numbers are from the SQ420 FSM for the J20 engine, not the SX4 manual, which I probably have somewhere but I am too lazy to go hunt for - you can try using google to find the RW420 manuals.
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Old 09-16-2018, 05:14 PM   #10 (permalink)
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I assumed the 2012 would have the J20B engine, not sure when they started using these though. Was it only the SX4 that ever used the J20B engine ?
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