Buick 3800 V6 PCV valve assembly

Buick Regal, Century and Park Avenue as well as the Rendezvous and Lesabre.
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mccookrem
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Joined: Wed Dec 19, 2012 3:22 pm

Buick 3800 V6 PCV valve assembly

Unread post by mccookrem » Wed Dec 19, 2012 3:25 pm

I have a 1996 buick lesabre 3.8 vin K. the online kits show a spring with the pvc assy. My car does not have a spring in it. Do some models not use the spring. It seems like it would not fit anywhere. also what is the pressure sensor on top for?
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TerryAuto
Posts: 313
Joined: Fri Dec 11, 2009 8:48 pm

Re: pvc valve assembly

Unread post by TerryAuto » Wed Dec 19, 2012 11:08 pm

All PCV valves on the 3800 engine have a spring on them. It is possible that some time in the past somebody replaced it or the the upper intake manifold and forgot to put it back in. You are actualy lucky this did not cause any problems. A PCV that does not seal properly can cause a very bad oil burning condition.

The sensor on top of the lid is the Manifold Absolute Pressure Sensor (MAP). That is used for fuel delivery calibration.
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TW1307
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Joined: Fri Feb 08, 2013 9:44 am

PUSH RODS TORQUE SPEC FOR 3.1L

Unread post by TW1307 » Fri Feb 08, 2013 9:48 am

I NEED TORQUE / PUSH ROD SPECS for a 2003 BUICK 3.1L V6 engine so I can finish replacing the intake manifold gaskets.
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butchkaz
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Joined: Wed Nov 18, 2009 6:13 pm

Re: PUSH RODS TORQUE SPEC FOR 3.1L

Unread post by butchkaz » Fri Feb 08, 2013 2:38 pm

See this link for Buick 3.1L pushrod torque specifications.
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Amy

LASH for a 3.8 v6 buick park avenue

Unread post by Amy » Tue Mar 16, 2021 1:45 am

What is the valve lash distance from the rocker arm to the valve spring?
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carriedi
Posts: 2568
Joined: Wed Apr 10, 2013 12:42 pm

Re: LASH for a 3.8 v6 buick park avenue

Unread post by carriedi » Wed Mar 17, 2021 11:37 pm

3.8 engine is hydraulic lifters. Oil pressure takes up the lash. there is no adjustment so no spec. only the "S" body has a lash spec. (Suzuki models) All the other GM engine use hydraulic lifters.

why are you asking about valve lash?
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