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Questions tagged [air-intake]

The point at which air enters the intake tract of a motor vehicle or stationary engine

11 questions with no upvoted or accepted answers
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7
votes
2answers
193 views

How much oversize should you target when choosing a throttlebody?

This is in addition to my previous question about throttle bodies. I know it may sound a bit subjective, but I think it has a clear technical aspect, and I have done a considerable amount of homework. ...
4
votes
1answer
93 views

1991 BMW E30 - knocking when put into 1st

I knew I had a minor vacuum leak, but it got worse all of sudden while at a stoplight. In trying to get through to the next block, the engine started to knock. (My guess is preignition thanks to the ...
2
votes
0answers
33 views

What is this connection on the air intake right before the turbo?

This is the engine bay of a Citroën C5. I would like to know what the connection indicated by the red square is for. I removed the air duct once to check the EGR valve and there was a little oil ...
2
votes
0answers
264 views

China yy50cc qt-6 scooter fires up but when throttled it will choke out and stall

I can't get it to fully open wide and run. 2013 model, any help would be great. P.S. had a 80 cc modification done and also the jets were upgraded as needed. I'm thinking all my air hoses are out of ...
1
vote
0answers
42 views

Could a vacuum leak cause a drop in manifold absolute pressure?

I've been doing some reading and speaking to a mechanic trying to diagnose a hesitation and rough idling issue. I think I've ruled out a vacuum leak by spraying flammable gas around the seals and not ...
1
vote
0answers
163 views

Driving through a puddle

I have already asked a question on this board but I have another question. Sorry I am not good with cars so I don't know the lingo.I have a 2017 Chevy cruze. I drove through a deep puddle at about 40 ...
1
vote
0answers
718 views

Calculate Intake Manifold Absolute Pressure from MAF Engine using OBD Data

I need to calculate Intake Manifold Absolute Pressure from OBD Data. I have Toyota Corolla GLI 2010 Model. This car has MAF engine which does not return Intake Manifold Absolute Pressure. Where'as I ...
0
votes
0answers
31 views

Mazda Demio 2002 75HP 1.5 high engine RPM on idle

I am the owner of Mazda Demio '02 1.5 75HP (engine code B5E). The car has an issue of high RPMs (more than 1000 and hestitating) on idle. What is interesting here is whenever I press and hold the ...
0
votes
0answers
7 views

2000 Toyota Echo with manual transmission has air intake box rattle

On startup and when I run the air when the engine shakes a little we hear a rattling sound. If I hold onto the air (where the air filter is located) I don't get the rattling sound. I removed and ...
0
votes
0answers
52 views

Diesel intake heater DIY

I am the owner of an older 3.0 liter diesel car and winter mornings are quite painful for both me and the car. Even though thermostat is fine, heating takes forever. I know diesel only heats up while ...
0
votes
1answer
69 views

High rpm on neutral but flatting the gas pedal on D doesn't increase the rpm

I am making this question as an update to my previous question . I am not sure if updating that question will draw attention to it or keep it buried in the sea of questions here, if it gets updated ...