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Old 09-29-2023, 05:06 PM #1
alumarine alumarine is offline
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Compression Check with Intake Manifold off
I removed the intake manifold on my 2000 5VZ-FE 3.4
I want to check the compression before putting things back together.
Can I just disable the fuel pump and crank it with a key?

thanks
btw thanks to Tim the Toolman, his video helped a lot.
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2000 4runner 4wd Auto V6 - Tru-Cool LPD4454 trans cooler in series
1991 4runner 4wd Auto V6
1990 4runner 4wd Auto V6
Last edited by alumarine; 09-29-2023 at 05:32 PM.
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Old 09-29-2023, 07:44 PM #2
19963.4lsr5 19963.4lsr5 is offline
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Compression Check with Intake Manifold off
Quote:
Originally Posted by alumarine View Post
I removed the intake manifold on my 2000 5VZ-FE 3.4
I want to check the compression before putting things back together.
Can I just disable the fuel pump and crank it with a key?

thanks
btw thanks to Tim the Toolman, his video helped a lot.

That should be ok. Pull the ECU fuse also.

You don’t have to block open the throttle plate if it’s not there. Compression Check with Intake Manifold off


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Old 09-29-2023, 07:48 PM #3
alumarine alumarine is offline
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Quote:
Originally Posted by 19963.4lsr5 View Post
That should be ok. Pull the ECU fuse also.

You don’t have to block open the throttle plate if it’s not there. Compression Check with Intake Manifold off


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Thanks for the confirmation and info on the ECU fuse.
It is handy having the throttle body off!
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2000 4runner 4wd Auto V6 - Tru-Cool LPD4454 trans cooler in series
1991 4runner 4wd Auto V6
1990 4runner 4wd Auto V6
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Old 09-29-2023, 10:11 PM #4
19963.4lsr5 19963.4lsr5 is offline
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Compression Check with Intake Manifold off
Quote:
Originally Posted by alumarine View Post
Thanks for the confirmation and info on the ECU fuse.
It is handy having the throttle body off!

One of the issues I have with a compression check is watching the wrong” most popular” YouTube video that mention not holding the throttle wide open while doing the test.


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Last edited by 19963.4lsr5; 09-30-2023 at 10:38 AM.
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