Changed all plugs and coils will purge val. po441 code make it run ruff.
SOURCE: runs ruff changed mass air flow plug wires plugs
check for vacuum leaks, check distributor cap and rotor button, clean or replace as necessary. Use quality injector cleaner.
Testimonial: "thank you i will try that"
SOURCE: changed spark plugs wires and
year, make, model, engine size?
I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa
SOURCE: po441 insufficient purge flow changed both valves
make sure you have vacuum at the intake port and also check the rubber hoses on the EVAP system
What you have done is install parts in an attempt
to resolve what is called a driveabiilty issue
That is what everyone coming to this & other sites do
You have to study OBD2 Systems
You need to purchase to expensive
factory diagnostic manuals & study them
Then with the correct tools & test equip
you can do home driveway repairs
Most of what gets replaced falls under basic
preventative maintenance
Simply put-- if you keep a log book or remember
changing the spark plugs every 3 years, you can
skip that for the moment.
Coils are a guess & unless you have professional software
or walk a new coil from one cyl to the next, your not getting
the issue quit yet either
The Evap Parts maybe something different & you got the
vacuum leaks out of the way.
When you say I have changed-- I assume that mean you personally
If that means a repair shop,then they are next to useless and
made no attempt to solve you issues
The P0300 ---could be an EGR Valve or system issue or a leaking
injector,that's where the trouble charts help you get into checking things
The PO172---is an O2 Sensor Code I assume you use the
internet to lok up all these codes & causes
The PO141 also O2
I woud have to look up the p1441 but would seem like your
Evap area
You also provide no vehicle,year,make model,engine
I will give you ideas if your not going to a repair shop
Just provide some more info & what experience you have
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