Should I change these
Pit Crew
Joined: Sep 2021
Posts: 193
Likes: 68
From: AL
When I bought my '00 GS400 at ~144k miles, it came with several system issues, including a P0440 (Powertrain Evaporative Emissions Control System). In searching for, and solving the emissions system leak problem, I replaced many/most of the evap (and intake, different problem) lines. Many of the rubber lines were aged to a state of hard/brittleness, and some only had tiny tears/cracks near the nipple (leaks) that were impossible to spot without investigating.
When I went to pull the PVC connector from the valve cover, it was rock hard. The connector broke into several pieces, which then fell onto the valve train, which I had to pick out using an assortment of grabbing tools.
I found it very satisfying (and inexpensive) to purposely fail and remove many of these tubes/connectors at once, in my garage, and replace them with soft, fresh tubes/parts; rather than to have them fail on their own, down the road, one after another, in the middle of nowhere, mile after mile.
When I went to pull the PVC connector from the valve cover, it was rock hard. The connector broke into several pieces, which then fell onto the valve train, which I had to pick out using an assortment of grabbing tools.
I found it very satisfying (and inexpensive) to purposely fail and remove many of these tubes/connectors at once, in my garage, and replace them with soft, fresh tubes/parts; rather than to have them fail on their own, down the road, one after another, in the middle of nowhere, mile after mile.
Thread Starter
Pit Crew
Joined: Dec 2021
Posts: 228
Likes: 9
From: NJ
When I bought my '00 GS400 at ~144k miles, it came with several system issues, including a P0440 (Powertrain Evaporative Emissions Control System). In searching for, and solving the emissions system leak problem, I replaced many/most of the evap (and intake, different problem) lines. Many of the rubber lines were aged to a state of hard/brittleness, and some only had tiny tears/cracks near the nipple (leaks) that were impossible to spot without investigating.
When I went to pull the PVC connector from the valve cover, it was rock hard. The connector broke into several pieces, which then fell onto the valve train, which I had to pick out using an assortment of grabbing tools.
I found it very satisfying (and inexpensive) to purposely fail and remove many of these tubes/connectors at once, in my garage, and replace them with soft, fresh tubes/parts; rather than to have them fail on their own, down the road, one after another, in the middle of nowhere, mile after mile.
When I went to pull the PVC connector from the valve cover, it was rock hard. The connector broke into several pieces, which then fell onto the valve train, which I had to pick out using an assortment of grabbing tools.
I found it very satisfying (and inexpensive) to purposely fail and remove many of these tubes/connectors at once, in my garage, and replace them with soft, fresh tubes/parts; rather than to have them fail on their own, down the road, one after another, in the middle of nowhere, mile after mile.
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PDengler
RC - 1st Gen (2015-present)
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Sep 9, 2021 10:04 AM
