Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - johnkent

Are there any pros or cons of running adiesel with no air filter to help it breath better

Can anyone advise

Edited by johnkent on 03/05/2017 at 14:28

Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - SLO76
Ask yourself why manufacturers go to the expense of making them... it's there for a reason so I wouldn't.
Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - RobJP

No air filter : any dust in the air (ever driven behind a HGV that's just come out of a quarry ?) will go straight into the engine. It will then do a lovely job of scoring pistons, valves, and basically act like sandpaper to all those polished surfaces in the engine.

Basically, it's a really bad idea.

Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - focussed

You said "to help it breathe better" You mean like when you run a normally aspirated petrol without the air filter to make a lot of intake noise so you think it's going faster?

It's a 1.9 cdti diesel engine with a turbocharger - there will be no increase in performance running without the air filter, as long as the air filter is not blocked or partially blocked.

Oh - and running without an air filter could let a foreign object - a stone - whatever - into the turbo compressor inlet. If that happens it's goodbye turbo - hallo large bill.

Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - focussed

I have just seen your post of yesterday and the reason you want to run without an airfilter.

Sorry- can't really help, unless the airfilter is soaked in oil I would leave it in.

Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - johnkent

I have just seen your post of yesterday and the reason you want to run without an airfilter.

Sorry- can't really help, unless the airfilter is soaked in oil I would leave it in.

I've got a feeling if i replace the air filter i will restrict the breathing of the re directed breather pipe, i'm selling the car anyway

just wondered if there was another way to help it breath easier.

cheers

Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - johnkent

i could put some mesh gauze from the entrance of the air box where air comes in to stop and debris entering the engine.

That might work.

Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - RobJP

i could put some mesh gauze from the entrance of the air box where air comes in to stop and debris entering the engine.

That might work.

It's going to stop BIG bits of stones, leaves from getting into the engine, but not dust or small items.

Basically though, it's your car - if it goes wrong and ingests a stone or other item, and blows up the turbo and engine, then you're the one facing a huge bill or a scrapped vehicle.

Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - mss1tw
Get a bus pass, ya clown.
Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - Cyd

From your turbo's POV even small dust particles that you can barely see are like smashing the windscreen with a brick!

I'd give your turbo compressor vanes about a fortnight tops.

However, as someone said, it's your car.

Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - edlithgow

Are there any pros

or cons of running adiesel with no air filter to help it breath better

Pros: No

Cons: Yes

Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - madf

MAF sensors get clogged with dirt - richer mixture , Higher fuel consumption. Fail MOT

Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter - edlithgow

See my reply in your other thread for workaround suggestions, though they may not be worth rhe trouble.

 

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