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Exhaust has small black dots of water on my hand .. ??

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When the car is cold, if you start the engine, there is some steam or a little bit water in the exhaust. when it is hot, you shouldn't have any water in the exhust pipe, otherwise maybe some place is leaking, check you radiator coolant level.

Posted on Jul 15, 2008


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2007 huyndia tucson 2.0 i need the timing marks on exhaust cam and inake cam on the chain

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Apr 12, 2011 | 1996 Toyota Camry

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How to replace a waterpump on a 2001 olds alero 2.4 cam

Water pump is driven by timing chain idler and is mounted on the rear of the timing chain housing. Disconnect the neg. battery cable. Drain cooling system. Disconnect oxygen sensor connector.
Remove upper exhaust manifould heat sheild. Remove exhaust manifold brace. Remove lower exhaust manifold heat sheild. Loosen manifold to exhaust manifold spring loaded nuts. Remove radiator outlet pipe to water pump coverbolts. Disconnect exhaust pipe from manifold.
Pull down on the exhaust pipe to disconnect it from exhaust manifold bolts. Disconnect outlet pipe from oil pan and transaxle. If equipped with manual tranaxle, remove exhaust maifold brace. Leave lower radiator hose attached and pull down on radiator out look pipe to disengauge from water pump. Leave outlet pipe hanging.
Lower vehicle. Remove exhaustmanifold to cylinder head nuts. Remove exhaust manifold to cylinder head nuts. Remove manifould. Remove timing chain front cover. Remove timing chain tensioner. Remove bolts bolts securing water pump cover to cylinder block. Remove water pump to timing chain housing nuts. Remove water pump attaching nuts. Remove water pump and cover assembly. Separate componets as necessary.
If cover was separated from body during removal, join this componets with a new gasket and hand tighten bolts. Apply bearing grease to splines of water pump drive. Set body and assemble into position.
Install and hand tighten bolts securing cover to cylinder block. Install and hand tighten bolts securing cover to cylinder block. Installand hand tighten nuts securing body to timing chain housing. Lubracate outlet pipe "O" ring with antifreeze. (I use RTV) Connect outlet pipe. Install and hand tighten bolts. Tighten bolts and nuts to specification in the following sequence. I'll ad the torque spec. at the end but this is where if you tighten out of order something will break.
pump assembly to timing chain housing nuts.
pump cover to pump body bolts
pump cover to cylinder block bolts (Bottom Bolt First)
outlet pipe to cover bolts
To complete installation reverse removel procedure.
Torque specs are 19 in. or 26mm all except water pump cover bolts which are 124 in or 14Nm
I never torque the bolts just make sure there done in the right order.

Oct 19, 2010 | Oldsmobile Alero Cars & Trucks

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Consuming too much fuel.....O2 light on

The O2 sensor is reading the exhaust as being too lean and is telling the computer to add more gas to the mix.
The first thing to do is check the exhaust system for leaks between the sensor and the engine. You are looking for small black streaks at joints. With the engine running run your hand close to the pipes and feel for air coming out. Repair any leaks first. Then check the wire harness for the O2 sensor by hand looking for bare or broken wires. Anywhere wires are rubbing against each other or on the body. Tape them up if you find anyand make sure there is no corrosion on the plug- ins.
If this is okay then I would replace the sensor. Hope this helps.

Oct 03, 2010 | 1993 Isuzu Rodeo

1 Answer

How do i change a water pump in a 97 grand am with a 2.4 litre engine

2.4L Engine
See Figure 3
  1. Disconnect the negative battery cable.
  2. Drain and recycle the engine coolant.
  3. Disconnect the oxygen sensor wiring.
  4. Remove the upper exhaust manifold heat shield.
  5. Raise and safely support the front end of the vehicle securely on jackstands.
  6. Remove the exhaust manifold brace bolt.
  7. Unbolt and remove the lower exhaust manifold heat shield.
  8. Break loose the manifold-to-exhaust pipe spring loaded nuts.
  9. Unbolt the radiator outlet pipe assembly from the water pump cover.
  10. Disconnect the exhaust pipe from the manifold.
  11. Pull down and back on the exhaust pipe to disengage it from the exhaust manifold bolts.
Do not rotate the flex coupling more than 4°. this could damage the component.
  1. Separate the radiator outlet pipe from the oil pan and transaxle.
    1. On manual transaxle, remove the exhaust manifold brace.

  2. Next, leave the lower radiator hose attached and pull down on the outlet pipe to detach it from the water pump. Allow the outlet pipe to hang.
  3. Lower the vehicle.
  4. Remove the exhaust manifold-to-cylinder head nuts.
  5. Extract the manifold, seals and gaskets.
  6. Remove the timing chain cover. Refer to the procedure later on in this section.
  7. Remove the timing chain tensioner. Refer to Timing Chain removal later in this section.
  8. Unbolt the water pump from the cylinder block.
  9. Extract the pump assembly-to-timing chain housing nuts.
  10. Remove the water pump and cover assembly.
  11. Separate the pump from the cover.
  12. Clean all mating surfaces of gaskets and sealant materials.

To install:
Prior to installing the water pump, read the entire procedure. Pay special attention to the tightening sequence to avoid component damage and ensure a proper seal.
  1. Attach the water pump to the cover and hand-tighten the components.
  2. Lubricate the splines of the water pump drive with chassis grease or equivalent, then install the pump and cover assembly. Hand tighten the cover-to-block bolts.
  3. Install the pump-to-chain housing nuts and hand-tighten.
  4. Lubricate the O-ring on the radiator outlet pipe with an anti-freeze solution and slide the pipe into the water pump cover, install and hand-tighten the bolts.
  5. With the specified gaps, tighten in sequence as follows:
    1. Pump assembly-to-chain housing nuts
    2. Pump cover-to-pump assembly
    3. Cover-to-block, bottom bolt first
    4. Radiator outlet pipe assembly-to-cover

  6. Install the exhaust manifold using new gaskets.
  7. Install the manifold-to-cylinder head nuts, follow the tightening sequence and tighten to specifications.
  8. Raise and support the front of the vehicle.
  9. Index the exhaust manifold-to-exhaust pipe flange bolts.
    1. Turn bolt bolts in evenly to avoid cocking the exhaust pipe and binding the bolts. Turn the bolts in until they are fully seated.

  10. Install and secure the radiator outlet pipe to the transaxle and oil pan.

On manual transaxles, install the exhaust manifold brace.
  1. Install the timing chain tensioner and chain cover.
  2. Attach the lower heat shield.
  3. Lower the vehicle.
  4. Attach the exhaust manifold brace. Tighten the manifold-to-exhaust pipe nuts to specification.
  5. Attach and secure the upper heat shield.
  6. Connect the oxygen sensor wiring.
  7. Fill the radiator with coolant water mixture until it reaches the heater hose coolant outlet, then install the hose and continue to fill. This will assist with the complete cylinder block fill.
  8. Connect the negative battery cable.
  9. Start the engine and top off the cooling system and check for leaks.

Dec 28, 2009 | 1997 Pontiac Grand Am

1 Answer

Where is the thermostat located on a 2004 Chevrolet Cavalier? I can find the return line to the radiator but it coneects back to a metal tube which goes into the engine near the firewall on the driver's...

On the 2.2 engine it is located on the lower radiator hose water pump side.
Just follow the lower radiator hose to where it connects to the motor, the metal tube it connects to has either 2 or 3 bolts holding it to the motor, simply remove these bolts, Remove the housing that the hose hooks too, and the thermostat is right inside there.

On the 2.4 It's hard to get to, but if you look at the front of the engine it is beneath the intake manifold (2.4). It is right on the block, and if you don't like tight places, it's not the job for you. It is right on the front of the block, above your oil filter etc. I know what your thinking, and I wish it was up high on the radiator too.
Here is how you replace the thermostat on the 2.4 liter on the Z24. First Remove the heat shield from the EXHAUST manifold, from the firewall side of the engine(3 screws). Get a ratchet, 10" extension and a 10mm socket.Remove the shield. Drain antifreeze and replace with new antifreeze with 50/50 mix water/antifreeze. On the bottom of the engine behind the bottom pulley(on the oil pan)unbolt that flat looking metal tube(1 bolt).The tube will be black unless someone painted it. The thermostat is at the end of that black pipe where it bends up. Now from the top look down through the EXHAUST manifold,you will see 2 screws on that black pipe.Those 2 screws hold the thermostat in. Remove them with 8mm socket, separate it there and "POOF" your thermostat.The thermostat will only fit in one way, spring up. Above that is the water pump. the water pump on a GM 2.4L DOHC engine is between the engine and the firewall underneath the EXHAUST manifold.Put a floor jack underneath the engine to support the weight of the engine.REMOVE the exhaust manifold from the car. Remove the drive belt,top engine mount on the passenger side and the coolant fill jug. Then Remove the engine lifting bracket(3 big bolts). Then Remove the passenger front wheel and splash guard so you can get to the bottom pulley. Block the pulley from turning counter clockwise when you loosen the crankpully bolt. IMPORTANT..DO NOT TURN THE ENGINE BACKWARD WHILE REMOVING THE CRANK BOLT!! Slack will get in the timing chain and mess up your timing. LOWER the floor jack just enough to use your pulley puller to Remove the crank pulley. NOW, you should see a endless number of screws going around the edge of the flat cover and some in the middle of it where there is a hole(where the 3 big bolts were).Remove ALL of those screws with a 10mm socket and/or wrench, whatever it takes to get them out,but get them all. NOW.. the VERY important stuff.After the cover has been removed, barely put the pulley back on so you can rotate the engine by hand CLOCKWISE...The crankshaft key-way should be pointed up(there is a dot mark) and 2 LITTLE HOLES on the cam gears pointing close to 6 o'clock position. Get two 8mm bolts and insert them into small holes in the intake cam gear and the exhaust cam gear.If you look through those little holes you will see they must go through the gear and into a hole in the housing behind gear.THAT WILL HOLD THINGS IN TIMING. Now Remove chain tension,it is spring loaded so be careful or you could be looking everywhere for small parts that whent flying.Now take the chain off the water pump sprocket.You now have to go behind chain housing and unbolt the bolts holding on the water pump housing. the water pump and housing consist of 4 gaskets and need to be tightened is a special way to prevent leaks. has FREE online repair manuals, you should check these out before atemping this. Good Luck

Dec 14, 2009 | 2004 Chevrolet Cavalier

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