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wolf_north_1234 写了： 2025年 9月 24日 23:59

Jiffy lube换了什么seal?

就是Valve-stem seal

大漠孤烟 写了： 2025年 9月 25日 09:00

正常使用的丰田永远不会烧机油。我猜楼主一定是让修车铺子的小时工换机油。

一直在JIFFY LUBE换油。半年前，JIFFY LUBE的TECHNICIAN发现ENGINE VOLVE附近有很多 黑色油乎乎的沉积物，检查后说要换Valve-stem seal，就换了，不算很贵，$300.00。

refreshed 写了： 2025年 9月 25日 12:11

一直在JIFFY LUBE换油。半年前，JIFFY LUBE的TECHNICIAN发现ENGINE VOLVE附近有很多 黑色油乎乎的沉积物，检查后说要换Valve-stem seal，就换了，不算很贵，$300.00。

我前面的贴子讲，换Valve-stem seal需 $5,000 是信口开河。因我没有店家换Valve-stem seal的经历。

Blue smoke, $300 换Valve-stem seal, 也是正确的操作。

为啥我觉得他的head gasket 坏了？

JIFFY LUBE忘了给我盖油盖，后来发现不只我一个，邻居也抱怨，就不去他家了

在加州吗？加州的老车每隔几年就得做smog check，不知道这种蓝烟能不能过

估计是Valve seals

如果超过1000就没必要修了

Possible Issues

Worn Piston Rings

Let oil slip past into the cylinders.

Often accompanied by reduced compression and power.

Valve Seal or Valve Guide Wear

Oil leaks past the valves into the combustion chamber.

Often causes smoke during startup after the car has been sitting.

PCV (Positive Crankcase Ventilation) System Problem

A stuck or clogged PCV valve can draw oil into the intake.

Turbocharger Issues (if turbocharged)

Failing turbo seals can push oil into the intake/exhaust system.

Head Gasket Failure (less common for blue smoke)

Oil passages leak into the cylinders, though white smoke is more common if coolant is involved.

When It Happens Tells You More

On startup only → Valve seals likely.

During acceleration/load → Worn piston rings or cylinder walls.

During deceleration → Valve guides/seals.

Constantly, especially with whistling/boost loss → Turbo seals.

If left unchecked, the issue can cause high oil consumption, fouled spark plugs, catalytic converter damage, or full engine failure.

noktard 写了： 2025年 9月 25日 18:06

估计是Valve seals

如果超过1000就没必要修了

Possible Issues

Worn Piston Rings

Let oil slip past into the cylinders.

Often accompanied by reduced compression and power.

Valve Seal or Valve Guide Wear

Oil leaks past the valves into the combustion chamber.

Often causes smoke during startup after the car has been sitting.

PCV (Positive Crankcase Ventilation) System Problem

A stuck or clogged PCV valve can draw oil into the intake.

Turbocharger Issues (if turbocharged)

Failing turbo seals can push oil into the intake/exhaust system.

Head Gasket Failure (less common for blue smoke)

Oil passages leak into the cylinders, though white smoke is more common if coolant is involved.

When It Happens Tells You More

On startup only → Valve seals likely.
每天早上 第一次启动车，就喷这个BLUE GAS一次，当天其他时候 再停车-启动 就没有任何烟了。第二天早上，又重复SAME THING。

During acceleration/load → Worn piston rings or cylinder walls.

During deceleration → Valve guides/seals.

Constantly, especially with whistling/boost loss → Turbo seals.

If left unchecked, the issue can cause high oil consumption, fouled spark plugs, catalytic converter damage, or full engine failure.

refreshed 写了： 2025年 9月 25日 12:11

一直在JIFFY LUBE换油。半年前，JIFFY LUBE的TECHNICIAN发现ENGINE VOLVE附近有很多 黑色油乎乎的沉积物，检查后说要换Valve-stem seal，就换了，不算很贵，$300.00。

I have to say, this doesn't make much sense. Are you sure it's not the spark plug seal or valve cover gasket that's being replaced?
A bad valve stem seal will allow oil to leak down the valve stem, through the valve, and into the cylinder, which can cause blue smoke during cold starts. However, how could Jiffy Lube know there's a valve stem seal leak without opening the valve cover? The technician probably noticed an oil leak on the valve cover, but that would have nothing to do with the valve stem seal.
Also, $300 for a valve cover gasket is a good price. It's unlikely he replaced 8 or 16 valve stem seals without also replacing the valve cover gasket. Is the Jiffy Lube technician even qualified to work on valve stem seals? I don't think Jiffy Lube hires SAE-certified technicians, at least in my town.

显然, jiffy lube只换油，engine 的东西
它们的technician搞不了，楼主肯定是
被宰了，还把车弄坏了

换机油居然连盖子都不见了，直接造成活塞环和气缸内壁非润滑摩擦产生高温，很短的时间就损坏活塞环和气缸的密闭精度。没药可救。
【自己的车，必须自己换机油！】

refreshed 写了： 2025年 9月 24日 19:40

我是 觉得跟 半年前 JIFFY LUBE 换SEAL有关系，因为之前都是 一个星期不开车，才有这种 蓝色气体出来，现在是每天早上都有，应该没那么巧合吧? 我刚换这个 新 SEAL的时候，出JIFFY LUBE的门，我就感觉车在 3 挡（低速时的加速挡）的加速明显比 进车铺修之前 要差了，就是加速比较绵。这个老车 开起来还是蛮舒服的，不指望买新车的性价比 会比老车好很多。BUDGET $1000内都可以修。

你这问题1000可修不好。3000块差不多

refreshed 写了： 2025年 9月 25日 12:08

就是Valve-stem seal

那也许是没换好，或者根本就没换，反正是漏了，机油就进去了。发动机热起来后，橡胶膨胀，把机油又堵住了，蓝烟就没了

Valve seal 老化了，停车时机油会流入气缸，启动时就会冒烟。
丰田的很常见问题，不影响开，也不值得修

YouTube search Scotty Kilmer.

多年前我有个老Camry, 冒大量蓝白烟，到处问都说什么engine rebuild, 三四千那时的价. 那车都不值那么多.

偶然看到Scotty的一个video, 说换个reverse什么的valve. 十块钱不到，换起来一点也不难. 换完了发动，烟没了.

refreshed 写了： 2025年 9月 24日 18:38

老2005 CAMRY 最近几个月 每天早上启动时，都有蓝色尾气排出，一分钟气体散开后，哪怕开一天车也不会 重新 有这种蓝色气体喷出；之前好多年，要是车一个星期不用一次，才会喷这种蓝色尾气，需要急着修吗，费用如何？谢谢！

Baja 写了： 2025年 9月 26日 17:23

YouTube search Scotty Kilmer.

多年前我有个老Camry, 冒大量蓝白烟，到处问都说什么engine rebuild, 三四千那时的价. 那车都不值那么多.

偶然看到Scotty的一个video, 说换个reverse什么的valve. 十块钱不到，换起来一点也不难. 换完了发动，烟没了.

PCV (Positive Crankcase Ventilation valve)

laomei9 写了： 2025年 9月 25日 19:31

显然, jiffy lube只换油，engine 的东西
它们的technician搞不了，楼主肯定是
被宰了，还把车弄坏了

为啥去jiffy这种店呢
本地toyota再差
换个油还是靠谱的

neuron66 写了： 2025年 9月 27日 15:59

PCV (Positive Crankcase Ventilation valve)

PCV
Valve seal

不是一个东西。

neuron66 写了： 2025年 9月 27日 15:59

PCV (Positive Crankcase Ventilation valve)

我换的就是这个PCV. 咳这年头53记性真不好了

refreshed 写了： 2025年 9月 25日 12:11

一直在JIFFY LUBE换油。半年前，JIFFY LUBE的TECHNICIAN发现ENGINE VOLVE附近有很多 黑色油乎乎的沉积物，检查后说要换Valve-stem seal，就换了，不算很贵，$300.00。

300???绝对不可能，估计牙啥都没干。。