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Fixed the old man’s car today. He drives a rav4, which are apparently notorious for getting sticky on the throttle body over the years. He had been getting a short high rev when he started the car for quite some time. Then yesterday he tells me he stalled out a few times when he let off the gas. So he’s finally down to let me help him out. Pull the snorkel, and honestly it didn’t look too bad, but may as well give it a spray of carb cleaner and a wipe. Kind of a pain to get the snorkel seated again, but that’s cars. Starts her up, no rev, takes her out no stalls, says she even sounds a lot better. All for $4.24, pretty sure I saved him about $80 from an honest mechanic.

Fixed the old man’s car today. He drives a rav4, which are apparently notorious for getting sticky on the throttle body over the years. He had been getting a short high rev when he started the car for quite some time. Then yesterday he tells me he stalled out a few times when he let off the gas. So he’s finally down to let me help him out. Pull the snorkel, and honestly it didn’t look too bad, but may as well give it a spray of carb cleaner and a wipe. Kind of a pain to get the snorkel seated again, but that’s cars. Starts her up, no rev, takes her out no stalls, says she even sounds a lot better. All for $4.24, pretty sure I saved him about $80 from an honest mechanic.

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[–] • 0 pt

Many cars have blowby gasses that are recirculated through the PCV. There is likely 2 pcv valves on that car, one that goes to the intake pipe before the throttle and one that goes to the intake body.

Often times oil makes it through and leaves carbon deposits throughout the intake. Usually the permanent fix to this is an oil catch can. If you don't have that, you should inspect and clean the throttle body as you did fairly regularly.

[–] • 0 pt

You sound like you know a thing or two. How do you feel about EGRs and DPFs?

[–] • 0 pt

I don't know that much, this is just info I hear on YT.

With EGRs on diesels, you most certainly have to use a catch can system as soon as you buy a new diesel. Else the oil vapors will combine with the diesel soot and make a sludgy tar that'll clog up the EGR system.

On gasoline vehicles, the oil vapors will form carbon deposits within the EGR system. This will vary depending on the amount of blowby your engine has. An oil catch can should be able to solve this problem, but you need a decent designed catch can with a good filter, else, the oil vapors will just go through.

EGR systems can be a headache.

DPF and the new gasoline particulate systems have their own problems. DPF causes more harm than good, as you need to run the engine to heat the DPF during regeneration. There should not be a DPF system for passenger vehicles, and pickup trucks. They are very costly, emit more emissions, and will emit more emissions as they will likely break and need to be produced again.

They force DPF systems on diesels so they can make sure you don't have an efficient mode of travel. It's designed to destroy the industry.