Car driven with no air intake...

Car driven with no air intake...

Author
Discussion

jimbobsimmonds

1,824 posts

166 months

Wednesday 31st October 2012
quotequote all
jimxms said:
Unmetered air entering directly around your throttle body would have caused lean situation (too much air, too little fuel) resulting in much higher combustion temps and potential engine damage.


Naaaa.....you'll be fine.
Drove round for 2 weeks with just this fault (gasket on the throttle body worked loose) including a trip from Medway to Leicester... Engine still going strong 10k miles later and still producing the same power as it did on a dyno 2 years ago...

mx5tom

Original Poster:

573 posts

174 months

Wednesday 31st October 2012
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Ok, ok. I'll stop worrying. :P

Thanks again. beer

Ren Esis

419 posts

139 months

Wednesday 31st October 2012
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Reminds me of that story on the Audi forums where someone tried sandblasting his engine internals by hooking the airpipe to a bag of sand biggrin

You should be ok though, I assume it was disconnected but air was still being routed through the filter into the empty space your intake was sucking air from.

fangio

988 posts

235 months

Wednesday 31st October 2012
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This country is not really ever dusty enough to worry about air filters.
Probably wouldn't hurt an engine if you didn't have one. Check a dirty filter. and it's contents would be swiftly burnt and exhausted. Even the bits of leaves you sometimes find....

Unless you habitually drive on the beach!

CampDavid

9,145 posts

199 months

Wednesday 31st October 2012
quotequote all
Driving around with no filter on opens you up to loads of potential problems, however, they're all pretty obvious as soon as they happen. If its running fine now it'll be fine going forward.

HustleRussell

24,744 posts

161 months

Wednesday 31st October 2012
quotequote all
Frankly, air filters are for pussies


Davie

4,752 posts

216 months

Thursday 1st November 2012
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Change the oil to be on the safe side? Really?

If dirty particles drawn in through the intake system can somehow mysteriously work their way into the oil system then it'll be the same in reverse so if that's the case, I'd be less worried about bits of leaves and some bees in the oil and more worried about the 5 litres of oil that will be exiting via the exhaust shortly...

combustion mixture and oil system, two seperate systems and they only ever mix when something terminal has gone wrong such as piston rings, head gasket, valve stem oil seals and so on.

Quit worrying, she'll be a'reet!

RobCrezz

7,892 posts

209 months

Thursday 1st November 2012
quotequote all
Davie said:
Change the oil to be on the safe side? Really?

If dirty particles drawn in through the intake system can somehow mysteriously work their way into the oil system then it'll be the same in reverse so if that's the case, I'd be less worried about bits of leaves and some bees in the oil and more worried about the 5 litres of oil that will be exiting via the exhaust shortly...
Many intakes also have breathers from the engine (so they breath air which has already passed the air filter. If the breathers had come disconnected when the intake pipe fell off the throttle body then they could have pulled in some dirty particles into the oil supply.

HustleRussell

24,744 posts

161 months

Thursday 1st November 2012
quotequote all
RobCrezz said:
Davie said:
Change the oil to be on the safe side? Really?

If dirty particles drawn in through the intake system can somehow mysteriously work their way into the oil system then it'll be the same in reverse so if that's the case, I'd be less worried about bits of leaves and some bees in the oil and more worried about the 5 litres of oil that will be exiting via the exhaust shortly...
Many intakes also have breathers from the engine (so they breath air which has already passed the air filter. If the breathers had come disconnected when the intake pipe fell off the throttle body then they could have pulled in some dirty particles into the oil supply.
Into the crankcase, which would be filtered out before it goes anywhere near anything sensitive.

RobCrezz

7,892 posts

209 months

Thursday 1st November 2012
quotequote all
HustleRussell said:
RobCrezz said:
Davie said:
Change the oil to be on the safe side? Really?

If dirty particles drawn in through the intake system can somehow mysteriously work their way into the oil system then it'll be the same in reverse so if that's the case, I'd be less worried about bits of leaves and some bees in the oil and more worried about the 5 litres of oil that will be exiting via the exhaust shortly...
Many intakes also have breathers from the engine (so they breath air which has already passed the air filter. If the breathers had come disconnected when the intake pipe fell off the throttle body then they could have pulled in some dirty particles into the oil supply.
Into the crankcase, which would be filtered out before it goes anywhere near anything sensitive.
Yup, the chances of it doing damage are small, but frequent oil and filter changes are good practice anyway.

Baruti6065

2 posts

60 months

Tuesday 28th May 2019
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The same thing happened to my truck last night while driving 80mph down the highway. Now im having a whole wagon load of issues. My oil pressure gauge is hard over on high, the engine is slow to accelerate, the truck jerks when accelerating and it feels like it wont switch gears (automatic) any help?

FiF

44,175 posts

252 months

Tuesday 28th May 2019
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HustleRussell said:
Frankly, air filters are for pussies

How many of us used oldies used to happily drive around to the musical accompaniment of a pair of open 40 Webers/Dellortos?

996TT02

3,308 posts

141 months

Tuesday 28th May 2019
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FiF said:
HustleRussell said:
Frankly, air filters are for pussies

How many of us used oldies used to happily drive around to the musical accompaniment of a pair of open 40 Webers/Dellortos?
Loved my 45DCOE-equipped MGB, the lovely noise it made on partial throttle openings... which was lucky as suddenly flooring it at low revs did not quite go as intended (literally).