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Questions tagged [air-intake]

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

3
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1answer
32 views

Focus 2003 1.8 TDCI starts, but struggles to start in the morning

I have a question, well two. Basically I have bought 2003 Focus TDCI but it is struggling to start in the morning? It's not exactly cold, so I don't understand why it would struggle. It has been about ...
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0answers
27 views

How does one know if engine has been damaged due to dirty air filter?

Recently looked at a car and it had a very dirty air filter. When changing the filter we saw a dead fly and straws where it should have been no dust or dirt at all i.e. after the filter. As soon as ...
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0answers
36 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 ...
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1answer
42 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 ...
0
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1answer
53 views

Can removing temporarily disconnecting filter damage car or not?

I bought a civic vti and when running the car the vtec didnt sound as loud as the test drive. the seller told me that was because he removed the 'whales penis' modification which I had agreed to. He ...
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0answers
14 views

How dangerous is a hydrogen generator in a vehicle? [duplicate]

I was told that using this system in the picture below is unsafe, but I am not sure? Propane tanks seem dangerous to me. How can a safely install this devise on a fuel injected car?
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3answers
41 views

Why wont my Toyota dual cab 2004 3.0lt turbo diesel wont go over 100km/hour

I have just bought a new Hilux, its had work done too it aswell as been RWC approved and registered. But i notice yesterday coming back home that it was struggling to get up to 100 or over. I am ...
1
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1answer
90 views

Audi TT Turbo and Dump Valve Issue

I've picked up a 1.8 TT Turbo Quattro which has been fitted with a K&N filter and dump valve by the previous owner. My (basic) understanding of how this works is that it should release the air ...
2
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1answer
51 views

What are the possible causes for the car to increase power by itself?

I have a 1993 Fiat Panda 1.0 i.e. (gasoline) with single injector. Last year it started to present a very specific issue: from time to time (but basically now it happens every time I drive the car) it ...
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2answers
1k views

Would it make sense to put a cold air intake in the 'stock' air filter box?

I have an Audi A6 C6 4F2 - 2.4L V6 and I'm wondering if I should put in a cold air intake. As seen on the picture right here (left side), there isn't much space.. I was thinking to put the ...
3
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4answers
100 views

Does cooler air improve turbo performance?

When modifying NA cars I've always been advised to try and protect the intake from heat soak from the engine bay because the engine performs better with cooler air. This makes sense. I now have a ...
2
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1answer
558 views

2010 Nissan Sentra - Idling rough in reverse, occasionally stalls when stopping

Been having an issue with my 2010 Sentra where the idle in reverse is very rough and has very little power. As well when making abrupt stops in drive the car will occasionally stall, but start back ...
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0answers
24 views

Would this improve performance

Is it possible to have a intake valve that is interference with an exhaust valve that isn't? Think about it it would probably increase power and performance. Ie. Intake opens toward motion of the ...
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0answers
14 views

Merc c220 w203 hose can't find name

So tested I had a pop and a loss of all power finally found that the hose from the bottom of the radiator passenger side had disconnected from the joiner with 2 sensors in it that then has a hose ...
2
votes
1answer
55 views

Seafoam Spray in 2008 Accent

Good day, My GLS Accent has a 1.6 MPI automatic engine that I bought new in 2008 has about 150,000 Kilometers on it. With basic service (not from dealers), petro 91 octane fuel and synthetic amsoil ...
2
votes
1answer
129 views

What to use to seal airbox gaps

Bike is a 2006 ZX-10R. I've taken out the screws in the air box to split it into two halves for cleaning (not just taking the lid off). Putting it back together, I'm noticing some gaps that were ...
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1answer
64 views

Precautions before changing air filter [closed]

I am using Chevrolet Sail-Uva Diesel 2013 model(India). I am about to change my air filter. Is there any cleaning process before changing air filter in cars? Anybody have great tips can improve this ...
3
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5answers
6k views

What do hood scoops do to prevent water being ingested in to the air intake system?

I'm planning a modification to my 1998 Toyota Corolla, replacing the stock air intake with something along the lines of forced air induction via a cone air filter. Air will be drawn in to the car with ...
2
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1answer
63 views

IAT reporting below zero temp on MB w168

I have a first version MB w168. This car has the MAFs/IATs soldered to the ECU. You can't replace those without replacing the whole ECU. Anyway I have an obd scanner which works with this car and I ...
6
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1answer
346 views

Help me diagnose the cause of this intake valve burn

I would like some help diagnosing the probably cause of this intake valve burn as seen in the picture. 167fmm engine. 229cc OHV push rod type. Now here is the rub. this is engine originally 9:1 CR, ...
3
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3answers
461 views

Could taking coolant through the intake filter realistically cause permanent inability to start?

Diagnosing failure to start on a 2001 Honda Prelude SH, still in brainstorming phase. Leaving out list of other thoughts because this question is specifically about this possibility, rather than ...
5
votes
1answer
528 views

What would happen if i took the throttle plate off my 5.3L V8 engine?

The throttle body helps regulate air right? Can't it also restrict air as well. For example put your hand over your mouth and try to breath in. If I took it off wouldn't I be able to get more air in ...
4
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1answer
348 views

Effect of smoke ingestion on fuel injected car engine?

My father asks, can smoke in the air from wild fires cause a fuel injected engine to choke? (He seems to think this was once true for carbureted engines - was it?) My personal guess is that we can ...
5
votes
1answer
435 views

Planning to fit an oil catch can into my car. Any problems with this setup?

I own a 2007 Ford Fiesta ST150, I have modified it a little, one of the mods is a cold air intake. I want to install an oil catch can setup, but as the PCV vent is behind the intake manifold and ...
3
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2answers
68 views

2012 Mitsubishi Galant SE

So I have a 2012 Mitsubishi Galant 2.4l and I'm looking for a cold air intake system but there isn't one for my car. I've been looking at a lot of websites but there's nothing. I searched and I found ...
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0answers
488 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 ...
4
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0answers
116 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. ...
6
votes
1answer
186 views

What does a wet intake port (direct injection) mean?

Car: Audi S5 4.2L V8 FSI I have my intake manifold out to clean carbon of the intake ports. When I was removing the port separators, I noticed some were really dry (light grey carbon), others were ...
6
votes
1answer
433 views

Is this a right MAF signal?

I've just bought this MAF sensor for the injection setup I'm going to build, and first I was struggling to figure out how to connect it. It's used for several BMW cars.(E38,E39,Z3) On the connector it ...
3
votes
1answer
55 views

10/89 (1990) Subaru Legacy EJ22 - OBDI Code 45

10/89 Subaru Legacy EJ22. NA. Multiport Fuel Injection. Throwing... Code 45: Pressure duty solenoid (turbo)/atmospheric pressure sensor circuit (non-turbo) Where is this thing located? I ...
8
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2answers
662 views

ITBs with a charged engine

Are there any benefits of running independent throttle bodies with a super/turbocharged engine, as opposed to running a single throttle body on the same engine? If so, what are the benefits (and how ...
8
votes
1answer
560 views

What is this U shaped tube sticking off the intake hose?

On the intake hose for a 2001 Honda Prelude SH there is this U shaped tube with one closed end (sorry about blurry shot): (The tiny thing sticking up on the top left isn't a tube it's just a solid ...
1
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1answer
333 views

What else should I inspect after repairing hole in intake hose?

I discovered a hole in my intake hose (2001 Honda Prelude SH, ~190k miles), downstream from the filter: I've got a new hose coming and just patched it up with some duct tape in the mean time. I have ...
3
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0answers
85 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 ...
2
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1answer
17 views

what the torque should be on my 2000 gmc 4.3 intake maanifold

I need to know the torque on intake manifold bolts on 2000 gmc Sonoma with a 4.3 motor
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4answers
9k views

Cold Air Intake and Engine Wear

I'm contemplating whether or not to retrofit my car with a cold-air intake and performance air filter. Will doing so lower the lifespan of my engine? That is to say, increase likelihood of engine ...
3
votes
1answer
53 views

after replacing icv,intake boot,valve cover gasket and return to stock air box from CAI,car will not hold idle 325i 1994

Car will not idle after re-installing stock air box from previous cold air intake. I replaced idle control valve also replaced intake boot as well as valve cover gasket along with spark plugs, BMW ...
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7answers
1k views

Do air filters purify air better with age?

I have been reading in a few places that air filters get better with age, is this true? And how much better? Would it have any effect on quality of the oil or make oil dirty faster? Or is there ...
4
votes
2answers
467 views

KTM Duke 200, Broken Airbox

My duke generates an odd noise and when I looked under my seat what I saw was an open air filter box because of the broken screws. When I took my bike to the service center what they told was to ...
12
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3answers
8k views

Cold air intake causing rich condition

This is a follow up question to my initial question which can be found here : LTFT and STFT values are off and don't make sense Car is a 2015 F10 M5 Mods : Cold air intake, aftermarket rear ...
5
votes
1answer
558 views

Where does the Toyota Vitz air intake take air from?

I am just curious where my engine air filter is taking air from. Below is a picture of my car's (Toyota Vitz 2007) engine (not a picture of my exact engine). As I can see, the air filter should take ...
8
votes
1answer
323 views

Is it possible to extend the length of the shaft on an existing turbocharger, further distancing the compressor from the turbine?

I'm toying with turbojet engine ideas, and over the course of my research it occurred to me that the combustion chamber could be more power-efficient and space-efficient if it was aligned in the ...
1
vote
1answer
389 views

Is this PCV hose broken?

I asked a question earlier about a P0171 MIL in my 2007 toyota corolla. The question is here: Diagnosing P0171 2007 Toyota Corolla I only have a OBD2 reader, I just bought a scanner, which should come ...
15
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2answers
1k views

Yamaha R1 intake tract configuration

Interesting Configuration The Yamaha R1 has a very strange intake design. Notice the intake horns in the image below. They sit above the throttle bodies and are not attached directly to them ...
17
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6answers
8k views

Why or why not increase engine efficiency by running the car “fuel-lean” (using a turbo or supercharger)?

Everyone wants their cars to use less fuel, right? I read the following passage about running the car fuel lean from this website: Run the engine fuel-lean, that is, use excess air. It is well ...
28
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7answers
11k views

When is a cold air intake system beneficial?

Cold air intake must be one of the popular mods there is, and one subject to the most controversy as well. Manufacturers of such systems advertise 5-20 HP gains, yet there are claims that this mod ...
6
votes
2answers
1k views

How much horsepower to expect from a cold air intake in Dodge Ram

It's a 1999 Dodge Ram 1500 4x4, Laramie SLT, automatic transmission, 5.9l magnum engine, and crew cab (222k mi). I have a friend who could put a cold air intake on it, with a new hood. But I have a ...
7
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1answer
101 views

Dirty air filter seal

Whenever I have had work done in the past that I can't perform myself, timing belt etc every garage I have been too has made a real mess with my air filter. When I check the filter there is always ...
10
votes
2answers
530 views

Why Have More Than One IAC Type Device On an Engine?

I've had two Mazda's, a 97 323 and 98 626. On both these car's engines there was only a single IAC mounted on top of the throttle body, and no other device for adding air flow on the intake side. ...
5
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4answers
2k views

Can 100% calculated load be reached in neutral?

While searching for information about how is engine load calculated I came across this question which contains an equation for the ECU load calculations. As I understand it under fixed atmospheric ...