The Highlander

Yeah, We were at parent's house for Christmas and mom want me to check her BMW. Whoa, her parts already replaced thru auto tech as intake throttle pipe, MAF, valve gasket, etc and it still got MIL on.

Oh poor her.

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Zeroblazer21

so many differents type of cars have different methods to clean? interesting.

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Evo Dragon

"Little tutorial how to clean bmw m3 e36 mass airflow sensor. You can also use this diy tutorial for other cars. Cleaning maf sensor can resolve idle problem and can lower gas consumption for 15%. Killer maf sensors is oiled type air filter like K&N and similar."

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The Highlander

I kind did like that for someone before and it was not 100% works very well. So better way to replace a new MAF. Less headache and save time.

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deafsmogtech

Very good vids.... Now you understand it, however I use dry thin brush to wiping the dust off. I seldom use cotton swabs, just soak the tips with soap water for clean the MAF body like thin tunnel inside the MAF body or external surfaces. For Bosch MAFs, I won't service them for customers. I want new maf sensors, good money to fix them.

deafsmogtech

Expensive Bosch MAFs even whole throttle body where the MAF sensor integrated inside the body or whole MAF body. One time I diagnosed a 2002 or 03 BMW 325ci for rough running for lean codes, replaced new Bosch O2 sensor then found out the new O2 sensor was not fixing the lean code and same rough running then I decided to take a look at the MAF sensor, found contaminated bulbs, called for new MAF sensor as whole unit. The engine was fine no more rough running.

If I see any plastic lines or rubber hoses (PCV system) that connect to the air duct, I won't touch them unless the broken line or hose found. I simple replaced a new MAF sensor in an old body where the new MAF sensor come with a new body, I doesn't want to break the harden plastic line or hoses in front of customers. No way. Like The Highlander mentioned

Zeroblazer21

Wirelessly posted

bosch oxygen sensor are good and 80 buck. actually I have two on my car I just keep good mpgs.

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The Highlander

Bosch is almost anywhere. I seems them at Ford, Chevy, Buick, Subaru, VW, BMW, and most diesel motors.

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Grummer

so, any HP increase with the new air filter?

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deafsmogtech

Bosch O2 sensors are not for every cars, they can cause the PCM's OBD-II Drive Cycle problems for not set the O2 sensor monitors (Often called "Not Ready") If your car is Honda you better go with Denso O2 sensor. I've using Denso O2 sensors for GM and Asian cars. For European cars, I use Bosch O2 sensors. If you put a new Bosch O2 sensor in GM car then O2 sensor monitor is not set cuz of resistances in O2 sensors that make the PCM diffcult to adjust correct air/fuel metering. For Chrysler cars you need to buy new O2 sensors from dealer, sometime they will work with Denso O2 sensors.
Even Bosch O2 sensors will work fine with Chrysler vehicles but follow the OEM O2 sensors.

deafsmogtech

stays same HP with new stock air filters, with K&N filters increase little HP. I never buy K&N filters for my personal cars. MY Alfa Romeo? I try K&N filters.

Zeroblazer21

Wirelessly posted

so I could get it if my engine service disappear? bwcausw it said oxyen sensor...hmmm thanks for the tip

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Zeroblazer21

i'm surprised i enjoy how my car is fast today. my gas tank havent go down. so that was the clog air filter hmm before it was go down fast. after i put it air filter it havent go down..neat..

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deafsmogtech

For Hondas, you have a chance to clean the IAT sensor to get good performance/gas mileage. IAT sensor's location is at the intake manifold near the EVAP purge solenoid or fuel hose. The location of the IAT sensors in the Hondas are varies depend on model year and engine code.
Clean IAT sensor is same way as MAF sensor. IF you fumble an IAT sensor and pick up and clean it and reinstall it you are good to go.

sequoias

Well, sometimes it's retarded with the check engine light come on then go away later on. It probably the bad fuel causing carbon build up on the o2 sensor causing it to happen. It happened to me 2 or 3 times in the past.

deafsmogtech

I've seen some Hondas that Check Engine light come on while driving but will go away when decal gas pedal or stop at the light or turn key off. There is EGR system relates (I think you car doesn't have the EGR system) and varies valve timing or other problem but I doubt the bad gas cause the excessive carbon build up on the O2 sensor unless your car have white/blue smoke from tailpipe.

sequoias

Wirelessly posted (sent from a smartphone. )

Yea, but the diagnostic tool said o2 sensor when had check engine light on before. It has sohc vtec with lev emissions. Never had smoke come out from the tailpipe.

Evo Dragon

Well, if your friend's Jeep Wrangler drives off-road street. he need cover air filter for dirt or sandstorm or splash/playing on river as waterproof cover on his K&N filter.





I covered air filter for spraying degrease engine as cleaning engine at car wash vendor.

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deafsmogtech

What code(s) for O2 sensor(s)? (if you feel uncomfort, pm me)

Zeroblazer21

i dont see any smoke on my car,too

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deafsmogtech

I've seen the Hondas puffs smoke when accelerating or de-accelerating the engines. Common in modified engines (harsh revving engine while driving), causes the intake valve guides wear out. I even saw a newer Honda Civic like 2005 something.

sequoias

I don't remember the code but it has to do something with voltage.

sequoias

I've seen them puff smoke before too. My 1983 Honda Civic did that too.

Evo Dragon

Most old american cars:

White smoke: White smoke is caused by water and or antifreeze entering the cylinder, and the engine trying to burn it with the fuel. The white smoke is steam. There are special gaskets (head gaskets are the primary gaskets) that keep the antifreeze from entering the cylinder area. The cylinder is where the fuel and air mixture are being compressed and burned. Any amount of antifreeze that enters this area will produce a white steam that will be present at the tailpipe area.

If white smoke is present, check to see if the proper amount of antifreeze is inside the radiator and the overflow bottle. Also check to see if antifreeze has contaminated the engine oil. You can look at the engine oil dipstick, or look at the under side of the engine oil filler cap. If the oil is contaminated with antifreeze, it will have the appearance of a chocolate milkshake. Do not start the engine if the oil is contaminated with antifreeze, as serious internal engine damage can result.

How did antifreeze get in the oil or cylinder in the first place? The engine probably overheated and a head gasket failed due to excessive heat, thus allowing antifreeze to enter the cylinder (Where it is not meant to be).

Blue Smoke: Blue smoke is caused by engine oil entering the cylinder area and being burned along with the fuel air mixture. As with the white smoke, just a small drop of oil leaking into the cylinder can produce blue smoke out the tailpipe. Blue smoke is more likely in older or higher mileage vehicles than newer cars with fewer miles.

How did the engine oil get inside the cylinder in the first place? The car has many seals, gaskets, and O-rings that are designed to keep the engine oil from entering the cylinder, and one of them has failed. If too much oil leaks into the cylinder and fouls the spark plug, it will cause a misfire (engine miss) in that cylinder, and the spark plug will have to be replaced or cleaned of the oil. Using thicker weight engine oil or an oil additive designed to reduce oil leaks might help reduce the amount of oil leaking into the cylinder.

Black Smoke: Black smoke is caused by excess fuel that has entered the cylinder area and cannot be burned completely. Another term for excess fuel is "running rich." Poor fuel mileage is also a common complaint when black smoke comes out of the tailpipe. Black smoke out the tailpipe is the least cause for alarm. Excess fuel will usually effect engine performance, reduce fuel economy, and produce a fuel odor.

How did the fuel get into the cylinder in the first place? Some of the causes of excess fuel are a carburetor that is out of adjustment, a faulty fuel pump, a leaky fuel injector, or a faulty engine computer or computer sensor. If black smoke is present, check the engine oil as in the white smoke example to make sure excess fuel has not contaminated it. Do not start the engine if a heavy, raw fuel smell can be detected in the engine oil. Call your mechanic and advise him of what you have found.

I hope this helps you determine what could be causing your engine smoke, and the possible reasons behind the smoke.

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purplecatty

K&N Filters are good and allow more airflow. I went to Auto Part years ago and they had display with blower fan running. I noticed the difference between ordinary filter and K&N filter.. Impressive..

I would want to have K&N filter for my motorcycle. 2002 Suzuki Volusia VL800 can have K&N filter which cost around $60 because it's attached to "football" shaped plastic with square K&N filter glued to it.

IF I want to use it, I must change out carburetor jets into bigger jet (hole of jet) to accommodate with K&N filter due to increased airflow. Jet kit cost between $30 to $50.

IF I decide to swap Stock exhaust to Vance & Hines straight shot exhaust, I would have to change out jet again for even bigger one (If K&N filter already installed, kits should have extra jets that have bigger hole than previous Jet). Because if I don't change out jets, It'll upset fuel/air mixture balance of the engine and make it run rough or hesitate. After swapping out to bigger jets, It'll produce 5% more HP on the engine.

I rather having K&N filter than "stock" one. (on my old post, some of you might remember I modified the air filter using 6 inches hotrod filter.)


I got all those information from Volusia Forum.

Catty

Zeroblazer21

look at the pix. this is my engine d16y7. my sis's ex husband is a ase cerification and he own his shop, auto care center. he found whats wrongs with it as i speak i got text from him. it will be done by tmw. for body.. i will work on body DIY

Attached Images

2011-10-19 11.57.45.jpg (71.3 KB, 10 views)

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Evo Dragon

I see your pix.. yellow mark written on top of engine "99 Civic". Your engine has been swapped into your 1997 Honda civic.

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sequoias

I noticed that too. Looks like the original engine broke before he bought the car.

Zeroblazer21

yeah i found out about that. i heard from mechanic he said he saw some wires for nitro original engine had blown up to a nitro thats what evo dragon and i try to guess what happen guess someone did race it w nitro, blown up rme.

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sequoias

Yeah typical for Honda addicts. Not surprised about that one, lol. Mine has the original engine because I don't bother blowing it up to shreds.