94' jeep cherokee laredo..white smoke when i'm parked or stopped

Do you only buy one shoe if it is worn? replace all of them, unless you want to cheep changing them one at a time.

definately a vacuum problem, try changing your pvc valve its under $5.00 and easy

At very cheap rates you can go for manuals from this store. Just check
Jeep Grand Cherokee WG Service Repair Manual 2002 2003

Check all the vacuum hoses on the intake manifold for a leak. Replace all broken and cracked lines. Check from the coil to spark plug wires with an inline spark tester for fire. Check the spark plugs for fouling and cracked terminals. Inspect the spark plug wires for worn or cracks. If you can check the fuel pressure to the throttle body. Also look at the air filter. Hope this will help you.

You will need to check fuel pressure first thing. It could be your problem. Also it may be a Idle Air Control Valve fault

I own a 2004 jeep Grand Cherokee 4.7 V-8 It took me 3 1/2 hours to complete changing the spark plugs. First one must remove the cover from the air filter and to the carbuetor there are two bolts on each side of the cover over the engine then the driver side is easy to remove the boots on each plug the passenger side is pretty easy except for the last plug all the way on the back this one took me 1/2 to remove because there is lots of obstructions like the power steering line and the oil line and electrical cables.

They are on the heads, follow the plug wires.

Sounds like misfire. Change spark plugs, wires, cap, rotor , fuel and air filters. Check for oil in spark plug holes. if oil found change valve cover gasket spark plug orings. they can leak oil into spark plug holes and cause misfire.

Joe ASE Master Tech

White smoke generally indicates a blown head gasket or cracked cylinder head, permitting coolant to enter the combustion chamber. You may see a small amount of antifreeze on spark plugs, or, you may see a loss of compression in one, sometimes two adjacent cylinders. Have you had any unexplained coolant loss?
If smoke is present, does it do this all the time or only when first starting? (don't forget, water vapor is a by-product of combustion) Watch other vehicles...is yours smoking more than theirs?
Other than this, intermittent rough running can be caused by nearly anything in either the fuel or ignition system. You will need to check codes and do testing to determine which system(s) need attention. Your spark plugs can also be a good reference when testing. After plugs have been in service for a while, they should all have pretty much the same colouring on the insulator surrounding the electrode...any variation is a clue to which cylinders are malfunctioning.

If you have the distributorless ignition, you wont have any spark plug wires. This is because the ignition coil packs sit directly on top of the spark plugs. The spark plug boots are connected directly to the ignition coil pack.

If you stand in front of your vehicle open the hood and look to the left side of the motor, just around at the bottom of the valve cover, you'll see a series of three humps. Those are the coil packs and they are held in by four bolts I believe and if you take those out and pry up on the long coil pack, it will come loose from the plugs and then you can change them out.

you can try useing a hot spark sloution,this is usualy an answe on gm products but its worth atry
unplug the ciol wire an leve it about 1/2 inch away its ******* the module but the system wil supply the spark