How to line timeing marks on 98 malibue v 6 - 1998 Chevrolet Malibu

on the crank there is a mark on the engine a mark its like a line on the backside of the engine and a spot on the crank sprocket on the top at the cam should have a hole in the center of the cam sprocket with a red line on the head top near valve cover it should line up properly or if you have 2 marks on the cam sprocket -- one on each side of the sprocket and on the engine side or cover should have 2 marks as well that line up do not take off the timing belt until you have all the marks properly lined up then you can remove the belt but do not turn over the engine without installing the new belt

If original and has never been removed there is no reason to do anything, if new just line up the timing marks.

Chain

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REMOVAL & INSTALLATION

4.3L, 5.0L, 5.7L and 7.4L Engines
See Figures 1, 2, 3, 4, 5 and 6

1. Remove the timing cover. This will allow access to the timing chain.
2. Crank the engine until the timing marks on both sprockets are nearest each other and in line between the shaft centers.

Fig. Fig. 1: Crank the engine until the timing marks on both sprockets are in line

1. On 1996-98 vehicles remove the crankshaft position sensor reluctor ring, if equipped. On 7.4L engines tool J-41371 or its equivalent puller must be used to remove the reluctor ring.
2. Take out the bolts that hold the camshaft gear to the camshaft. This gear is a light press fit on the camshaft and will come off easily. It is located by a dowel. The chain comes off with the camshaft gear.

Fig. Fig. 2: Remove the camshaft gear retaining bolts

Fig. Fig. 3: Remove the camshaft gear and timing chain
A gear puller will be required to remove the crankshaft gear.
To install:

1. Without disturbing the position of the engine, mount the new crankshaft gear on the shaft, and mount the chain over the camshaft gear. Arrange the camshaft gear in such a way that the timing marks will line up between the shaft centers and the camshaft locating dowel will enter the dowel hole in the cam sprocket.
2. Place the cam sprocket, with its chain mounted over it, in position on the front of the truck and pull up with the three bolts that hold it to the camshaft.
3. After the gears are in place, turn the engine two full revolutions to make certain that the timing marks are in correct alignment between the shaft centers. Tighten the camshaft sprocket bolts (and nut on the 4.3L) to 21 ft. lbs. (28 Nm) on 1988-95 models. On 1996-98 models, tighten the bolts to 18 ft. Lbs. (25 Nm). On the 7.4L, tighten them to 20 ft. lbs. (26 Nm) on 1988-95 models. On 1996-98 models, tighten the bolts to 25 ft. Lbs. (34 Nm).

When installing the crankshaft position sensor you must use install a new oil ring seal onto the sensor.

1. Install the crankshaft position sensor reluctor ring (if equipped), onto the crankshaft until it is firmly seated against the crankshaft sprocket. On 1996-98 7.4L vehicles replace the reluctor ring with a new component.
2. Install the front cover, torsional damper, water pump and the radiator.

Fig. Fig. 4: A gear puller will be required to remove the crankshaft gear

Fig. Fig. 5: Timing mark alignment-4.3L, 5.0L, 5.7L and 7.4L engines

http://www.obd-codes.com/

you need a haynes manual for your specific car.. this manual will give info from a complete teardown of vehicle. you can get one at any auto parts store. this manual will show the settings for timing.

Installation
Ensure timing marks aligned [6] & [7] . 1. Fit timing belt in anti-clockwise direction, starting at crankshaft sprocket. Ensure belt is taut between sprockets. 2. Slacken tensioner pulley bolt [8] . Push tensioner pulley firmly against timing belt to tension belt. 3. Tighten tensioner pulley bolt [8] . Tightening torque: 43-55 Nm. 4. Except Matrix: Turn crankshaft one turn clockwise. 5. Matrix: Turn crankshaft two turns clockwise. 6. Ensure timing marks aligned [6] . 7. Apply a load of 2 kg to belt at . Belt should deflect 4-6 mm. If not: Adjust position of tensioner pulley. 8. Install components in reverse order of removal. 9. Tighten crankshaft pulley bolt [2] . Tightening torque: 170-180 Nm

7 is timing mark on cam,pin mark to top,hole in spoke below pin mark lines up with mark on head
6 is crank timing mark,pin mark on crank lines up with mark on block
NOTE this mark is just before top

You probably have a large vacuum leak. With the engine running, listen under the hood for a hissing sound. Check all of the rubber lines running from the intake.

you must check these.
1- IAC
2- injecters
3-valves cylinder
4-fule pressure
5-coil ignition
6-bult timing

1. Well it can happen to the best of us check your firing order again it's actualy pretty simple.

1 3 5
2 4 6 This is how the firing order is 1 3 5 being in the back of the engine towards the fire wall and 2 4 6 in the front. Just place the wires on the corresponding numbers.