Questions tagged [air-intake]
The point at which air enters the intake tract of a motor vehicle or stationary engine
105
questions
3
votes
3
answers
3k
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 ...
- 4,900
5
votes
1
answer
643
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
votes
1
answer
2k
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 ...
- 141
5
votes
1
answer
2k
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 ...
- 944
3
votes
2
answers
151
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 ...
- 31
1
vote
0
answers
1k
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 ...
7
votes
2
answers
724
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.
...
- 2,944
7
votes
1
answer
2k
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 ...
- 1,093
6
votes
1
answer
1k
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 ...
- 2,944
2
votes
1
answer
131
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 ...
- 213
8
votes
2
answers
6k
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 ...
- 621
8
votes
1
answer
2k
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 ...
- 4,900
1
vote
1
answer
2k
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 ...
- 4,900
2
votes
0
answers
466
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
votes
1
answer
2k
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
- 21
13
votes
6
answers
48k
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 ...
- 233
3
votes
1
answer
87
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 ...
- 31
8
votes
7
answers
3k
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 ...
- 1,242
4
votes
2
answers
822
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 ...
- 93
12
votes
3
answers
17k
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 ...
- 411
5
votes
1
answer
2k
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 ...
- 1,001
8
votes
1
answer
766
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 ...
- 215
1
vote
1
answer
770
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 ...
- 181
15
votes
2
answers
3k
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 ...
- 33k
18
votes
7
answers
13k
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 ...
- 7,927
29
votes
7
answers
20k
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
2
answers
3k
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 ...
- 723
7
votes
1
answer
125
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 ...
- 1,242
10
votes
2
answers
1k
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.
...
- 15.7k
5
votes
4
answers
8k
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 ...
1
vote
1
answer
1k
views
ATV engine does not start well
I have a chinese ATV with an engine copied from an ~2006 Honda Foreman 400 (a very simple 1 cylinder 400cc carburetor based engine). It's an exact copy with regards to parts. However it does not start ...
- 113
6
votes
3
answers
14k
views
After Replacing EGR valve and tube: repeat of code P0401 for 98 Accord V6
About 13 months and 7500 miles ago, my mechanic replaced the EGR Valve and Tube and cleaned the intake to solve the low airflow problem. Now I'm again getting an insufficient flow warning with my ...
- 213
5
votes
1
answer
2k
views
Oiling lawn mower air filters
Why does the air filter on a lawn mower need to be oiled?
Is it true that major engine damage will occur if the intake air filter is not oiled?
- 291
12
votes
2
answers
11k
views
How do variable-length intake manifolds work?
I have heard many vehicle manufacturers have been using this to improve power and torque figures.
They do this by altering the length of the manifold, I am hoping for better diagrammatic explanation.
- 8,956
6
votes
5
answers
5k
views
Why do most mass-production motorcycles have their intakes facing backwards?
Almost every motorcycle I have seen has its air intake mounted such that it is sucking in air from the direction opposing travel.
According to fluid dynamics, if the intake is made to face forwards, ...
- 39.1k
17
votes
3
answers
84k
views
What is the difference between a MAP and a MAF sensor
Generally a car uses either MAP or MAF to determine the air flow index the engine is getting and that older cars used to have MAP and newer ones often use MAF and cars like the Mitsubishi EVO uses ...
- 8,956
6
votes
2
answers
82k
views
Effects of driving through deep water WITHOUT hydrolocking (car still bogged down and died)
So, yesterday we had very heavy rains, and unfortunately I was driving in an unfamiliar area of town. I drove through high water, which caused my car to sputter and so I turned around. The car behaved ...
- 1,060
3
votes
1
answer
2k
views
Found a lizard in my car, I have not driven it for 20 or more days
I went on a vacation for three weeks. When I came back and opened my car, I found a lizard in the car. I have had the air re-circulating knob set to ON.
I am still guessing how this lizard entered my ...
- 223
3
votes
1
answer
748
views
Why is this hollow plastic piece attached to the Karizma's air intake?
I was helping my cousin with a motorcycle teardown a while back (planning for a café racer build) and was puzzled by something on his '07 Karizma.
The red arrow in the picture above points to a ...
- 39.1k
3
votes
1
answer
257
views
2002 Honda Civic Si Air Box
I am about to replace a cracked air box on my 2002 Honda Civic Si. The one question I have is how do I get the old air box bolts out of the old air box top half and into the new one since it did not ...
- 133
6
votes
1
answer
10k
views
Oily Sludge in the Intake Manifold
When taking off the throttle body to clean my IAC, I noticed that there was a thick layer of oily sludge coating pretty much everything inside the intake manifold:
I have two queastions:
How did ...
- 15.7k
3
votes
1
answer
6k
views
Clearing a P0507 on a Dodge Stratus
My 06 Dodge Stratus (4 cylender) is showing a P0507 off of the Torque app. My idle is sitting at near 1100 rpm versus the standard 800.
I read up on the code and started looking for a vaccum leak ...
- 354
4
votes
1
answer
109
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 ...
- 141
6
votes
1
answer
45k
views
1991 Chevrolet S10 - Sputtering, hiccups, stalling, bad acceleration
I'm having a problem with my pickup;
It's a 1991 Chevy S10, 2WD P/U, 2.5L I4 engine with around 185,000 miles on it. It's the Iron Duke engine, a throttle body injection motor.
I'm not a mechanic, ...
- 101
2
votes
1
answer
1k
views
roots blower pressure on Detroit 2 cycle Diesel 371 cubic inches
I need the blower pressure for a Detroit 2 cycle Diesel 371 cubic inch Oliver 99 tractor
- 21
2
votes
2
answers
129
views
Using Air Intake Cleaners
I cleaned the air intake spraying a Sonax liquid air intake cleaner.
I took off the air filter, sprayed, waited to get dry and started the engine. It works well in my car that I think it was clean ...
- 379
6
votes
2
answers
31k
views
How to access the Idle Air Control Valve, Renault Clio mk2
I have an idling issue with my Renault Clio mk2 1.2L 2002 - the engine stalls as I slow down at lights and roundabouts etc...
I have been searching the web for solutions to this problem, Most answers ...
- 113
4
votes
1
answer
10k
views
High pitch whistle at a very particular throttle level
The symptom: while accelerating, at a very particular throttle level/pedal angle my engine recently started whistling in a very high pitch. If I let go of the gas or push it in more the sound goes ...
- 1,009
6
votes
2
answers
10k
views
Honda S2000 with cold air intake; rain driving
I recently purchased a cold air intake kit from Injen (SP1305P, seen below) at the recommendation of my mechanic and am planning on installing it in my 2001 Honda S2000. However, it is my daily driver,...
user3729
2
votes
1
answer
1k
views
Toyota Avensis Intake Manifold Rattle Fix - quesion about gasket
I have a Toyota Avensis which has the intake manifold rattle problem. I asked the dealer for a price on the new part and he quoted me €400. From a breakers yard they are hard to get and the going rate ...
- 219