Question about 1995 Isuzu Rodeo

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Explain the four stroke cycleof a three cylinder

Explain the four stroke cycle of a three cylinder engine.

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It is the same as any other engine no matter how many cylinders there are. . A 4 stroke engine has the intake stroke then compression then ignition then exhaust.(piston goes down for intake stroke,then up for compression then it fires the fuel air mixture from the intake stroke and that pushes the piston back down and on its way back up the exhaust valve opens for the exhaust stroke)

Posted on Nov 18, 2009

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Is this a quiz? Each cylinder contains one piston that takes four strokes to coplete a a full cycle. the intake-down,compression-up, power-down, exhaust -up.
A two stroke has up and down only . Compression and power Now, I thik you really meant the firing order. I'm not sure but Would make sense 2-3-2?

Posted on Nov 18, 2009

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Four cylinder engine with four spark plugs


A four-cylinder engine has four spark plugs. An important part of the power-generating process, each spark plug is responsible for igniting the fuel and air mixture inside of its cylinder. At the beginning of a stroke, a piston moves downward in its cylinder, drawing in a precise mixture of gas and air. After reaching the bottom, the piston moves back up, heavily compressing the mixture. Once it reaches the top, the spark plug ignites the mixture, and the explosion forces the piston down into the cylinder. This mechanical movement is harnessed and used to power the vehicle. Some large engines may have two spark plugs per cylinder to ensure that complete combustion is achieved and maximum power is generated.

Sep 28, 2016 | Cars & Trucks

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COIL PACK WIRING DIAGRAM


The coil pack wiring is relatively straightforward though the exact wiring, colours and suchlike will vary a little from car to car.

A 4 cylinder engine will have a coilpack containing four individual ignition coils - one for each cylinder, but they are likely to be wired as if there is only two. This is to simplify the wiring and to cut a little unnecessary complication from the ECU.
Effectively those four coils are two pairs of coils - the primary windings of coils one and four are wired in series and similarly the primary windings of coils two and three.

When cylinder number one fires a spark is also generated by coil number four but causes no effect as that cylinder is at the top of the exhause stroke. This is called the wasted spark principle.

The same effect can be obtained by using a single coil per two cylinders of a type which has a single secondary winding which is completely isolated or not grounded in any way. One end feeds one spark plug and the other end is also terminated in a spark plug wire and terminal.

This simplification means the coil pack (4 cylinder example) is fed by only three or four wires (usually four).

I hope this helps.

Feb 20, 2016 | Cars & Trucks

2 Answers

I have 351 motor and have tdc but the rotor is pointing toward #8 is that right?


Depends.
If you have tdc on the number one cylinder, and it is tdc on the compression stroke, then the rotor should be close to cyl one.
A four cycle engine has four up and down strokes, compression, power, exhaust, and so on.
Depending on the make model and year, the firing order could be 1-3-7-2-6-5-4-8 which would mean the timing chain or the distributor is one cylinder too far advanced if it is pointing to number 8.

Mar 29, 2015 | Cars & Trucks

1 Answer

Standard bore size mm


ENGINE 2 stroke single cylinder direct reed valve crankcase induction Liquid cooled 125 cc engine Cylinder size 124 8 cc Bore and stroke 54 x 54 5 mm 200 cc engine Cylinder size 175 3 cc Bore and stroke 64 x 54 5 mm 250 cc engine Cylinder size 247 7 cc Bore and stroke 72 5 x 60 mm 280 cc engine Cylinder size 272 2 cc Bore and stroke 76 x 60 mm 300 cc engine Cylinder size 294 1 cc Bore and stroke 79 x 60 mm I Cant put periods or commas so bare with me

Mar 15, 2014 | 1999 Daewoo Lanos

1 Answer

Stumbling on acceleration


You may be cruising down the wrong road with the exhaust idea but then you might be right. An exhaust restriction should also cause the engine to run hot. A faulty cat should also set some codes.
If the injectors are dirty, you may have a very lean fuel mix on one or more cylinders under acceleration, which would go away once you are not under load. And injector problems won't set any codes unless an injector stops working completely. Low fuel pressure could cause the same type of issue.

Dec 04, 2012 | Cars & Trucks

2 Answers

Does valves have to be closed when engine is at tdc on 2002 mitsubishi eclipse 2.4


The valves for any given cylinder will be closed when that particular cylinder is at TDC and on the "firing" cycle. Since 4 cycle engines have four "cycles" the piston can be at TDC twice. Once for firing and once when the exhaust cycle is completed and the intake cycle is starting.

Cycle 1: Intake valve is open and piston is travelling DOWN. (Intake)
Cycle 2: Both valves are closed and the piston is travelling UP (compression)
Cycle 3: Fuel has been ignited and the piston is travelling DOWN ( power)
Cycle 4: Exhaust valve is open and the piston is travelling UP (exhaust)

TDC is Top Dead Center, or the point that the piston is at the top of it's travel.

Jun 11, 2011 | Mitsubishi Eclipse Cars & Trucks

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Had the head cleaned up , need to put the cps / distributor back in i need to know the proceedure for this


u need to find top dead center on number one cylinder. to do this remove rocker cover and watch rockers move through there cycle. inlet valve opens on a downward stroke sucking in fuel, then closes the next stroke up is compression stroke and fires at top dead center then fires cylinder down. the exhaust opens on the up stroke pushing exhaust out. The top dead centre you need is after it has compressed the air fuel mixture.
then issert distributor with points clossed on No one cap and work through the firing order of the engine placing the leads arround in that order.
Hard to explain but hope its a help

May 08, 2011 | Toyota Supra Cars & Trucks

1 Answer

Is a 1995 concorde & 1995 LHS hood the same?


95 LHS- 3,518 cc 3.5 liters 6 V front longitudinal engine with 96 mm bore, 81 mm stroke, 10.5 compression ratio, overhead cam and four valves per cylinder
95 Concorde - 3,301 cc 3.3 liters 6 V front longitudinal engine with 93 mm bore, 81 mm stroke, 8.9 compression ratio, overhead valve and two valves per cylinder

Some of the parts may enter change but they are diffrent. Best of luck!

Oct 21, 2010 | 1995 Chrysler LHS

2 Answers

Toyota ceilca 2000 gts will not start


try reseting the alarm,maybe all thats needed.....

May 01, 2010 | 2000 Toyota Celica

2 Answers

There is a ticking sound coming from teh drivers side of the motor top end when i start it up when i drive it goes away but its there when i start it or ideling


In order to give you a solution to your problem, I need to explain a little bit about the valve train in your engine, the engine itself, and how it works.

1.You have an Internal Combustion engine. It is a Four Stroke engine. The engine has a Cylinder Block with cylinders inside. There is a piston for each cylinder which goes up, and down. The piston/s are connected to a crankshaft. The crankshaft turns the transmission, which in turn turns the driveshaft, to the rear differential. The rear differential has axles, which the rear wheels are bolted to. The four strokes are , Intake Stroke, Compression Stroke, Combustion Stroke, and Exhaust Stroke.

The piston goes down the cylinder drawing the fuel/air mixture in. (Intake Stroke) The Intake valve opens. The piston comes back up the cylinder, and Compresses the fuel/air mixture. (Compression Stroke) Both the Intake and Exhaust valve are closed. The spark plug fires igniting the fuel/air mixture, and shoves the piston down. (Combustion Stroke) Finally the Exhaust valve opens, and expels the burnt gases. (Exhaust Stroke)
This page on Wikipedia.org, may help explain the process. The third 'photo' down on the right is an animation showing the process.
http://en.wikipedia.org/wiki/Internal_combustion_engine
The animation shows an engine with an Overhead Camshaft. Your camshaft is located in the Cylinder Block, and not in the Cylinder Head, as shown.

2.Your Camshaft is a shaft with egg shaped lobes on it. As the tip of the egg shape comes to the top, it pushes up on a Hydraulic Lifter. This lifter in turn pushes up on a Pushrod, which pushes up on a Rocker Arm. The Rocker Arm in turn pushes down on either the Intake Valve, or the Exhaust Valve, opening them.

A Rocker Arm is shaped a lot like a See-saw. Just like the one's at a child's playground. As one side goes up, the other side comes down. The Pushrod pushes up on one side of the Rocker Arm, and the other side of the Rocker Arm pushes down on the valve, opening it.

A Hydraulic Lifter is a small cylinder that has a piston in it. Oil goes through a tiny hole in the side of the lifter, and this keeps the piston in a certain position. (That's why this lifter is named 'Hydraulic', because it uses oil inside) The Pushrod rests on this piston. The hydraulic action of the Hydraulic Lifter, keeps slack out of the valve train. The pushrod to rocker arm distance, and the rocker arm to valve distance.

What you are hearing, is a clicking sound from clearance being created, in-between the pushrod to rocker arm, and/or rocker arm to valve stem. A metal to metal clicking sound.

Solution? Depends on how mechanically inclined you are, or you may want to refer this job to an auto repair shop. The valve cover needs to be removed, and the nut on each rocker arm needs to be adjusted. Adjusting the nut down, (Clockwise), pushes the rocker arm down on the rocker arm stud, a little. This removes the slack, and makes things nice, and quiet again. Your engine will also run better, and you'll get better gas mileage.

DON'T do this, or have it down, and eventually the slack that is in there will increase. This will break parts! There IS a technique in doing this. If you know of someone who is good at adjusting valves, they can do it. They MUST be good however. If you adjust the Rocker Arm Nut too far down, you will lose power, and the exhaust valve face will burn. Not far enough down, and you get the clicking sound you hear now. About 1/4 turn down, to 1/2 turn down, should do it.

Jul 26, 2009 | 1998 Chevrolet S-10 Pickup

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