This is useful for diagnosing MIL issues that can come and go
like vacuum leaks, bad connections and misfires.
Remember you'll need new gaskets to do this or your new engine will have plenty of issues (
like vacuum leaks in the intake which will allow unmetered air into the intake system, and exhaust leaks which will allow air into the exhaust track allowing for really crappy gas mileage.).
There are many other problems I would suspect
like vacuum leaks, fuel supply issues, and ignition issues all of which would be much cheaper to fix.
This sounds
like a vacuum leak.
Not exact matches
I am not familiar with the Peugot 2.0 HDi engine, but it sounds more
like a turbo or
vacuum leak than an injector issue.
You could create a
vacuum leak and suck in a seafoam
like product or even use good gasoline.
Since the intake manifold pressure is directly measured to calculate the intake air volume and decide the amount of fuel to inject, a
vacuum leak theoretically can not contribute to a lean condition
like this.
If the OP applies it through the brake
vacuum hose it will smoke
like crazy for a few moments, the perfect time to look for exhaust
leaks.
If there's a
vacuum leak, then it can act just
like you're hitting the pedal as it can introduce additional air into the system - just
like what happens when the throttle is opened up.
it sounds
like the timing is off or you have a
vacuum leak.
This sounds
like a severe
vacuum leak.
Having just replaced the PVC valve on a 2013 TSI and still getting a P2177 code I started looking for
vacuum leaks and would
like to know if it is normal for a good PCV valve to expel a small amount of air through the vent hole?
If you have a
vacuum leak it will run
like a dog.
Generally, a hissing noise will come from a
leaking vacuum source or something
like an exhaust manifold gasket.
A
vacuum leak from items
like a broken air intake boot, broken / disconnected
vacuum lines, or a
leaking intake manifold gasket can lean out the air / fuel mixture or disturb intake airflow enough to...
The problem sounds
like you either have a massive
vacuum leak or a problem with the idle air control valve.
It sounds
like you might have a
vacuum leak at your brake booster, or maybe the booster itself is bad.
You may need to have additional diagnosis done by a mechanic
like one from YourMechanic to see if the ignition timing is correct and there is no engine
vacuum leaks in the intake or
vacuum lines.
Generally, a hissing noise will come from a
leaking vacuum (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-a-
vacuum-leak) source or something
like an exhaust manifold gasket (https://www.yourmechanic.com/services/exhaust-manifold-gasket-replacement).
Hello, It sounds
like you may have a faulty fuel injector at cylinder # 1, a faulty crank sensor or potentially a
vacuum leak.
Sounds
like the engine has either a major
vacuum leak or a burned valve.
That being said, unauthorized disclosures by the former are already occurring, but they are occurring in a complete legal
vacuum where people
like Snowden have less of an incentive to be careful with the scope of their disclosures since they know they are already facing either jail time or exile regardless of the public value of the
leaked information.