Q:It is burning oil, so that means oil is getting into the combustion chambers....but im not exactly sure which piece has gone bad? or for that matter what the valve guides are in the first place. Could the lifters have gone bad too? Can someone tell me what piece is most likely the cause for the oil leak into the chambers and then a price of how much it would cost to have it fixed. When i start the car it blows a puff and then settles down and then when im at a stop light and push the accelerator it blows a puff and then more or less settles down...sometimes it keeps going for a while. My mechanic put an additive in the oil called stop the smoke or something, and i know that that causes the seals to expand...and it has helped. So. I need someone to give me an overall diagnosis and price range. My mechanic is reluctant to have me do the work, im guessing cause its expensive...but i would rather pay 1000 dollars then buy a new car.

Do a compression test, that'll tell you exactly whats wrong. Or have a mechanic do one.

Q:How do I adjust the valves on a 96 Blazer, 4.3 V6? When we tighten them to torque specs there is no compression, then when we loosen them and get compression, they loosen up to loose after its been running...any help!, THanks!

i think the older chevys, you could adjust the valves, but i think now they are self adjustment. what you do is take no:1 rocker and turn the crank, until its all the way down on the low cam and then torque the bolt to specs, do the rest the same way. but if they are adjustable, start your blazer and loosen the rocker until you hear the lifter, then tighten it until it stops, then give it another 1/4 to 1/2 turn more. do the rest of them the same way.

Q:How does a thermal bypass valve work, specifically in a car.

Water flowing into the valve is directed to two outlets. One outlet directs water back into the engine to recirculate and the other outlet directs water to a radiator where its cooled and the returned back to the engine. The amount of flow diverted to these outlets depends upon the position of the valve disk. In a car engine the water is constantly recirculating through the ports of the engine and the thermostat is located in one of these passage ways. The thermostat and its valve creates a third port or second outlet that allows water to flow to a radiator. When the valve is closed the water bypasses the radiator and recirculates hrough the engine. How much flow is diverted to the radiator is done by a temperature sensitive component that causes mechanical movement of the valve position based on the water temoerature flowing through the valve. the hotter the water the more flow that is diverted to the radiator to cool. The colder the water less flow is sent to the radiator and more flow is recirculated back to the engine bypassing the radiator. The mechnical sense element of what is commonly called a thermostat is called a pill. It consists of a sealed unit which for lack of a better description acts like a piston inside a cylinder and the cylinder is filled with wax. This piston is free to move back and forth but is limited in its movement because the wax is incompressible and a spring is pushing the piston back agains the wax. Now as the temperature warms up the wax melts and the liquid wax expands as it heats up. As the wax expands the piston is moved agains the spring and the shaft attached to the piston is used to move a disk away from the seat of the valve and allows more water to flow to the radiator.

Q:Ive been tolding one or more of my valves is/are knocking, how can I fix this. Detail would be great, this is for a F0RD 460, from a 90. I was wondering if I can just buy some used heads(not sure if this comes with these things called valves, haha)but I can pick up some 460 heads, for pretty cheap.. on those and do a full swap, since mine is from 90 i dont know if year would matter. So how can I fix knocking valves., thanks

valves dont knock they tap and generally all you have to do is adjust the valve lash, but you may need new valve springs if those heads have alot of miles or were abused.

Q:I have an 07 mazda 3, I-4 with 16 Valve. Anyone know what 16 valve means?

Engines make power by burning fuel, and this is limited by the amount of air or rather oxygen that can be drawn into each cylinder. Some engines have a single inlet valve and a single exhaust valve. This would be a 2 valve per cylinder engine. So your average 4 cylinder car would have 8 valves. Some cars are 16v or 16 valves! The reason for this is that 4 smaller valves have lots of advantages over a pair of bigger ones! The main one as far as we are concerned is that a 16valve engine or rather a 4 valve per cylinder engine flows more air and makes more power than a 2 valve per cylinder one can.

Q:Need some info. Ok, four valves per cylinder is better than two valves per cylinder. Fine, why did Ford REVERT to only 3 valves (my guess is to save cost SOHC)? Audi and VW are using five valves per cylinder on some cars, does this offer any advantage over a four valve engine? Maserati even experimented with a six valve per cylinder!!!! (see link) http://www.maserati-alfieri .uk/alfier... but abandoned it (my guess is cost again?) Why are we stuck at four valves or would more valves actually render more horsepower? Pop some ideas best answer to reasonable answer...

Think of an engine as an air pump - obviously, we want the least amount of restriction for the incoming air and also the least amount for exhausting the compressed air. The ideal situation would be to remove the head during the intake stroke and put it back on during the compression stroke, but, obviously, this isn't possible. On a naturally aspirated engine, the intake is the most critical because the air is moved only by a relatively small difference in pressures. The exhaust stroke, on the other hand, is aided greatly by the super heated temperature and rapid expansion of the gasses. Two intake and one exhaust valve seems to be the most practical and efficient solution - adding more vales means smaller valves and an increase in the overall complexity. I seriously doubt that Maserati ever abandoned ANY automotive idea due to cost restraints. It's far more likely that adding more valves than three or four simply resulted in diminishing returns. Sometimes the allure of a new buzz phrase is nothing more than a marketing ploy - a 16 valve, DOHC, four cylinder engine, for example, is a pretty impressive resume for an engine, regardless of whether it actually is the optimum performance set up or not.

Q:Ok. i just got my trumpet and i barely know anything about it. my trumpet book says, oil your valves but i cant even get them unscrewed, its like theyre glued in there...or maybe im just doing something wrong. Helppp

Well on the valves you will see there are caps on the bottom and top of the valve. The top cap (it is located at the top of the valve itself, not the button you press - it is the cap that the button lands on when pressed) you unscrew that and take the valve out to oil it. Just make sure you put it in back correctly, if you put it in incorrectly it will not play properly. Also don't drop or dent the valves as they are very delicate and the smallest dent can damage it. Make sure that when you unscrew it that you only use your fingers. DO NOT use any tools to get it unstuck otherwise you can damage the instrument. It would be best for you (because you're new at the trumpet) to take it to the local music store and ask them how to take care of a trumpet. I am sure they will be happy to show you. Hope that helps

Q:What are the function of reed valves on a motorcycle?

They allow a fuel/air mixture to enter the area under the piston in a two stroke engine on the compression stroke, as it is a one way valve when the piston is coming back down the gases are forced up through the tranfer ports into the combustion chamber.

Q:I am trying to repalce the water turnoof valve under my sink but the valve just keeps turning and no progress is made to get it off so I can put on a new one. I am turning it clockwise but it just keeps turning. Can someone please tell me how to get this off? I do not want to have to call a plumber for something that I might be able to fix myself.Thanks.Sandy

Off is counter-clockwise. If it cannot be turned off, then you will have to find the main shutoff for the house. Shut down all the water. consider putting in copper pipe to cpvc shutoffs...they don't rust or corrode. 1/4 turn ball valve.

Q:difference between swing type check valve and non return valve? i need best answer... if swing valve will be opened when the fuel s reverse motion???

Non-return valve is another name for check valve. A swing check valve is just one type of check valve that uses a hinged gate to allow flow in only one direction. It operates sort of like a one-way fence gate, that you can open by pushing from one side, but you cannot open by pushing on the other side. Other types of check valves: Diaphragm, Ball, Lift, Duckbill. (:-o)