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4.6 camshaft out of time

I recently had the heads shaved on 97 mark viii 4.6 dohc 32 valve, and before they shaved them they took my cams off and didnt mark them and i was wondering if anybody could tell me how to get them back in time?

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You will need to buy a repair manual at a parts store it is hard to describe how to set timing with out photos .

Posted on Apr 17, 2009

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Ok 1990 geo storm 1,6 litre dohc replaced water pump replaced 3 valves replaced head gaskets replaced timing belt car wont start any ideas?


90 Storm, must be in Canada, 1,6 (the comma tells me this)
the storm is a:
The car is really an Isuzu Impulse minus some of that car's more expensive features.
my guess is you drove the this 4EX1 engine until the cam belt slipped. yes> if yes you bent valves.????????????
so does compression exceed 150psi on all 4 cylinders now?
we use the cylinder leak down test in all DOHC .
if not , back to the drawing board.
if yes, the we check spark next, then try test fuel.
when did the engine last run , last week,month , year,?
who did your valves, a real machine shop or kid down the street.
a read shop pressure tests the head ,and warp checks it and
then makes sure the valves are ready for long service.
are the head bolts at 58 ft/lbs
did you use sealant on the 3 cap caps, per the FSM book.
if not , top end oiling will fail. and cams wrecked.

the 1.6l DOHC has no HLA's
the lash on valves must be checked, and this is corrected with SHIMS.

a pro machine shop does the for you,did they:?
when rebuilding engines, its best to read the factory service manual first. FSM so you know the special steps just for this engine.
ISUZU engine it is.



quote.
1.6L Twin Camshaft Engine
  1. Disconnect the negative battery cable.
  2. Remove the cylinder head or valve cover.
  3. Position the No. 1 cylinder at TDC on its compression stroke.
The notch on the crankshaft pulley should align with the 0 degrees mark on the timing gear case. Make sure the rocker arms on the No. 1 cylinder are loose and the rockers on the No. 4 cylinder are tight. If not, turn the crankshaft one complete revolution and align the marks again.
  1. Using a feeler gauge, measure the clearance between the cam lobe and the selective shim on the intake and exhaust valves on the No. 1 cylinder, then the intake valves on the No. 2 cylinder and the exhaust valves on the No. 3 cylinder. Note readings.
  2. Rotate the crankshaft 360 degrees. Using a feeler gauge, measure the clearance between the cam lobe and the selective shim on the intake and exhaust valves on the No. 4 cylinder, then the intake valves on the No. 3 cylinder and the exhaust valves on the No. 2 cylinder. Note readings.
  3. The valve clearance obtained on the exhaust valves should be between 0.008-0.012 in. (0.20-0.30mm). If not, replace the selective shim by turning the camshaft lobe downward and installing tool J-38413-2 or J-38413-3 (valve lash spring spacer) between the camshaft journal and the cam lobe next to the selective shim. Turn cam lobe upward and remove the selective shim. Install new shim using the selective shim chart.
The rear camshaft bearing caps must be removed to remove the selective shim.
  1. The valve clearance obtained on the intake valves should be between 0.004-0.008 in. (0.10-0.20mm). If not, replace the selective shim by turning the camshaft lobe downward and installing tool J-38413-2 or J-38413-3 between the camshaft journal and the cam lobe next to the selective shim. Turn cam lobe upward and remove the selective shim. Install new shim using the selective shim chart.
  2. When the adjustment is completed, install the cylinder head covers and connect the battery negative cable. Start the engine and check for leaks.
end fsm quote.

see those 2 marks, and crank must be at TDC. mark first.

26196190-t50uqibptsz0ry0el5zdiz1k-1-0.jpg

May 16, 2016 | Geo Cars & Trucks

3 Answers

Spark to cylinder but appears to be dead new head does not run right


Was the same fault there before you changed the cylinder head? If so, that would point to piston problems on cylinder No4.

Are you able to do a compression test on the engine? If there's piston/ring trouble on the 4th cylinder that could cause a misfire because of poor compression.

The other thing that springs to mind is that there's something amiss with the valve clearances on cylinder No 4.

I'm not familiar with your car - does it have an overhead camshaft? Unfortunately when refitting an overhead camshaft after a rebuild, some owners have managed to bend a valve. This usually happens because the engine has been turned during disassembly/rebuild and the timing marks have not been aligned when refitting the camshaft.

This results in a valve in contact with a piston and when the camshaft is fitted and torqued down the valve becomes bent.

I think your problem may lie in either a bent valve or incorrect valve clearances.

Apr 18, 2016 | 1993 Geo Storm

1 Answer

How to replace the timing belt on a 1994 mazda 929 3.0 dohc 24 valve engine


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Aug 11, 2011 - Uploaded by rsarp
1994 Mazda MPV timing belt replacement, 6 cylinder DOHC 3.0... engine so the valves would not be bent ...

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Dec 03, 2015 | Mazda Cars & Trucks

1 Answer

The head bolt torque specs for a 97 kia sportage 2.2 dohc and the exhaust cam position as it has an e and an s as me id line up the e but others say line up the s so in5eresting to me as to y........


Camshaft & Crankshaft Timing Marks On
1995-97 Kia 2.0L VIN 1 Engines

The AERA Technical Department offers the following information regarding camshaft and crankshaft timing for 1995-97 Kia 2.0L VIN 1 engines. The camshaft sprocket/pulley for this engine has four markings that may be considered for cam/crank timing. Only one of those markings is correct.

This cam sprocket Part # 0K97212425 has multiple markings to allow use in more than one engine. The correct marking for this engine is the #2 as shown in Figure 1 below.
If the sprocket was removed from the camshaft for correct installation note the 12? o?clock positioning of the cam dowel pin. To secure the sprocket on the cam, hold the cam in position with the use of a nut driver and tighten the lock bolt to 42 ft/lbs (56 Nm) as shown in Figures 2 & 3 below.


Cylinder head bolt should be 62 lb-ft

Accelerator cable bolt
60 lb·in(7N·m)
A/C bracket bolt
32 lb·ft(45N·m)
A/C compressor mounting bolt
18 lb·ft(25N·m)
A/C tensioner bracket bolt
18 lb·ft(25N·m)
A/C idler pulley lock nut
24 lb·ft(32N·m)
Air hose mounting bolt
60 lb·in(7N·m)
Air intake housing bolt
38-56 lb·in(4-6N·m)
Bypass pipe bolt
18 lb·ft(25N·m)
Camshaft cap bolt
16 lb·ft(22N·m)
Camshaft pulley lock bolt
42 lb·ft(56N·m)
Clutch (M/T)/comverter (A/T) housing bolt
0.55inch(14mm)
80 lb·ft(108N·m)
0.39inch(10mm)
28 lb·ft(38N·m)
0.24inch(6mm)
60 lb·in(7N·m)
Connecting rod nut
50 lb·ft(67N·m)
Cooling fan assembly bolt
27 lb·ft(37N·m)
Cooling fan nut
16 lb·ft(22N·m)
Cooling fan shroud bolt
72 lb·in(8N·m)
Crankshaft damper pulley bolt
11 lb·ft(15N·m)
Cylinder head bolt
62 lb·ft(84N·m)
Cylinder head cover bolt
60 lb·in(7N·m)
Dynamic chamber bolt/nut
16 lb·ft(22N·m)
Dynamic chamber support bracket bolt
18 lb·ft(25N·m)
Engine-to-body ground wire bolt.
18 lb·ft(25N·m)
Engine bracket bolt
32 lb·ft(45N·m)
Engine hanger bolt
16 lb·ft(22N·m)
Engine mount nut
28 lb·ft(38N·m)
Engine support bolt
28 lb·ft(38N·m)
Exhaust bracket bolt
20 lb·ft(27N·m)
Exhaust flange lock nut
24 lb·ft(31N·m)
Exhaust manifold nut
31 lb·ft(42N·m)
Exhaust manifold heat shield bolt
18 lb·ft(25N·m)
Exhaust protector nut
35 lb·in(4N·m)
Fresh air duct bolt
84 lb·in(10N·m)
Front Alxle housing mounting bolt
48 lb·ft(65N·m)
Generator bracket bolt
32 lb·ft(45N·m)
Generator mounting bolt(bottom)
32 lb·ft(45N·m)
Generator mounting bolt(top)
16 lb·ft(22N·m)
Generator strap bolt
32 lb·ft(45N·m)
Gusset plate bolt
32 lb·ft(45N·m)
Ignition coil mounting bolt
18 lb·ft(25N·m)
Intake manifold bolt/nut
16 lb·ft(22N·m)
Intake manifold support bracket bolt
32 lb·ft(45N·m)
Main bearing cap bolt
63 lb·ft(85N·m)
Oil cooler adapter bolt
84 lb·in(10N·m)
Oil cooler nut
26 lb·ft(34N·m)
Oil gauge tube bolt
60 lb·in(7N·m)
Oil pump bolt
0.32inch(8mm)
16 lb·ft(22N·m)
0.39inch(10mm)
32 lb·ft(45N·m)
Oil strainer mounting bolt
84 lb·in(9N·m)
Camshaft position sensor bolt
84 lb·in(10N·m)
P/S bracket bolt
32 lb·ft(45N·m)
P/S mountiong bolt
30 lb·ft(42N·m)
P/s pump lock bolt
30 lb·ft(42N·m)
Radiator mounting bolt
72 lb·in(8N·m)
Rear cover bolt
84 lb·in(10N·m)
Separator plate bolt
18 lb·ft(25N·m)
Stiffener plate mounting bolt
84 lb·in(9N·m)
Spark plug
11-17 lb·ft(15-23N·m)
Sparter bolt
34 lb·ft(46N·m)
Timing belt cover bolt
84 lb·in(10N·m)
Timing belt pulley lock bolt
120 lb·ft(162N·m)
Timing belt tensioner lock bolt
33 lb·ft(45N·m)
Transmission undercover bolt
84 lb·in(9N·m)
Undercover mounting bolt
72 lb·in(8N·m)
Water inlet pipe bolt
18 lb·ft(25N·m)
Water pump bolt
18 lb·ft(22N·m)

Apr 25, 2015 | 1997 Kia Sportage

1 Answer

Jeep patriot timing chain slipped is this a big job for mechanic to fix


no symptoms posted, no events stated.
no mention of chain noise before or now , at failure....
2.4L
here is the interference page on 2.4
  • 2.4L DOHC Non-Interference (Valves may hit if camshafts turn out of time)
  • 2.4L SOHC Interference
  • seems yours is listed as 2.4L DOHC,
    this means that the engine is free wheeling on the DOHC
    so long as one cam dont spin and the other is stopped.
    or one cam slips time and out of time with the other cam.
    and the valves crash..........

    on all DOHC engines, i respect them. i do a cylinder leak down
    test by hand, no craning the engine with the starter inviting said CRASH.
    so if the cylinder leaks near TDC on the compression stroke
    or if by hand turned over gently by hand spark plugs out I feel hitting
    I STOP. and THINK then take action

    what is action, i pull it down and look to see if the marks are OFF.
    if off , i fix that then repeat the leak down test.
    if that fails, the head must come off

    its easy to make it worse, the key is dont/

    Oct 13, 2014 | 2008 Jeep Patriot 2.4

    1 Answer

    Timing marks on 1.6 dual over head cam


    the geo storm, 1.6 DOHC
    the FSM cover it, so does alldata.com
    hint 2, its an Isuzu engine.
    its really (makes information easier to find )
    Isuzu:
    4XE1-UW a DOHC 16-valve engine with 130 hp (97 kW)
    he DOHC engine was used in the 1990-1991 Isuzu Impulse XS, in the 1990-1991 Isuzu Stylus XS, in the 1990-1991 Geo Storm GSi, and the M100 Lotus Elan.
    all that off the wiki,,
    all cars rare here.....

    1st google hit
    http://www.robietherobot.com/storm/torquespecs.htm

    This engine is interference type
    so when timed, with a new belt
    roll engine by hand, with spark plugs out.? do pistons hit valves.
    yes, stop, the cam is timed wrong.
    no, do a compression test on #1, if pass, do all 4. 150psi min.w.o.t.
    wide open throttle
    a better test, is a leak down test. x4. by hand.
    these acts of kindness to the engine, saves most engines.

    if the leak down fails, the timing is wrong, or the valves are already
    bent..
    dont use a fleabay china belt, bet a GATES belt. (they last)
    setting the tension is very important to a full life .



    Jan 30, 2014 | 1990 Geo Storm

    1 Answer

    Hi, I am looking for a timing belt diagram for a 1998 2.5ltr Subaru Outback or can you tell me which timing marks on the sprockets line up to the encasing.


    Timing Belt Cover, Belt & Sprockets Removal & Installation 2.5L Engine To Remove:
    1. Remove the drive belts.
    2. Remove the A/C compressor drive belt tensioner. Timing belt & cover DOHC exploded view subaru-03-25-6470.gif

    3. Remove the crankshaft pulley.
    4. Remove the mounting bolts and left timing belt cover.
    5. Remove the mounting bolts and right timing belt cover.
    6. Remove the mounting bolts and front timing belt cover.
    7. Vehicles W/ M/T: Remove the timing belt guide.
    8. Ensure that the timing belt rotation arrows are still visible. If the marks are worn off, place new rotation marks on the belt. Timing belt alignment marks DOHC subaru-03-25-6472.gif

    9. Turn the crankshaft using a breaker bar and special adapter socket on the crankshaft. Align the timing mark on the crankshaft sprocket (1), left intake sprocket (2), left exhaust sprocket (3), right intake sprocket (4) and right exhaust sprocket (5) with the notches in cylinder block and timing belt cover.
    10. Paint alignment marks on the timing belt at the crankshaft and camshaft sprockets timing marks. CAUTION
      Do not turn the camshaft sprockets with the timing belt removed. The valves heads will contact each other causing the valve stems to bend.
    11. Remove the lower right idler pulley.
    12. Remove the timing belt.
    13. Remove the upper right idler pulley.
    14. Remove the lower left (toothed) idler pulley.
    15. Remove the belt tensioner.
    16. Hold the sprocket and remove the left intake and exhaust camshafts.
    17. Hold the sprocket and remove the right intake and exhaust camshafts.
    18. Remove the crankshaft sprocket.
    To Install:
    1. Install the crankshaft sprocket.
    2. Hold the sprocket and install the right intake and exhaust camshafts with the mounting bolts. Tighten 58 ft-lb (78 Nm).
    3. Hold the sprocket and install the left intake and exhaust camshafts with the mounting bolts. Tighten 58 ft-lb (78 Nm).
    4. Reset the automatic belt tensioner as follows:
      • Remove the mounting bolt and belt tensioner. NOTE: Do not exceed more than 2,205 lb. (9,807 N).
      • Place the belt tensioner on a press. Press the adjuster rod down gradually (using more than 3 minutes) 66- lb (165 N) or more until the adjuster rod is aligned with the stop pin hole in the cylinder.
      • Insert a 0.08 in (2 mm) diameter pin or hex wrench into the pin hole to lock the adjuster rod.
      • Install the automatic belt tension adjuster with the mounting bolt. Tighten 18 ft-lb (25 Nm).
    5. Install the lower left (toothed) idler pulley. Tighten 29 ft-lb (39 Nm).
    6. Install the upper right idler pulley with the mounting bolt. Tighten 29 ft-lb (39 Nm). Crankshaft sprocket and oil pump cover alignment marks 2.5L DOHC subaru-03-25-4890.gif

    7. Align the timing mark on the crankshaft sprocket with the mark on the oil pump cover. Timing belt alignment marks DOHC subaru-03-25-6472.gif

    8. Align the single timing mark on the right exhaust camshaft sprocket with the notch on the timing belt cover.
    9. When the single timing mark on the right exhaust camshaft sprocket is aligned with the notch on the timing belt cover, ensure that the double lines on the intake camshaft and exhaust camshaft sprockets are aligned.
    10. Align the single timing mark on the left exhaust camshaft sprocket with the notch on the timing belt cover by turning the sprocket counter clockwise (viewed from front of engine).
    11. Ensure that the double lines on the intake camshaft and exhaust camshaft sprockets are aligned when the single timing mark on the left exhaust camshaft sprocket is aligned with the notch on the timing belt cover. CAUTION
      • The camshafts can be rotated independently causing the valves heads to contact each other resulting in bent valve stems.
      • When the timing belt is removed the camshafts will turn to the lowest cam lobe position by the force of the valve springs. Before installing the timing belt the 4 camshafts are in the lowest lift position (valves closed).
      • When the camshafts are rotated to install the timing belts, # 2 intake and # 4 exhaust cam lobes of the left camshafts are held to push their corresponding valves down. In this position, these valves are held in the open position. Right camshafts are held so their cam lobes do not push the valves down.
      • The left camshafts must be rotated from the lowest lobe position to the position where the timing belt can be installed at the smallest possible angle in order to prevent intake and exhaust valve contact. Camshaft sprockets rotation subaru-03-25-6473.gif

      • Do not turn the camshafts in the direction shown in the illustration because the valves will open at the same time and contact each other.
      CAUTION
      If the timing belt alignment is off the mark buy more than 3 teeth, the valves and pistons may have contact.
      Timing belt alignment marks DOHC subaru-03-25-6472.gif

    12. Align the timing marks on the belt with the marks on the sprockets in the numerical order shown in the illustration.
    13. Install the lower right idler pulley with the mounting bolt. Tighten 29 ft-lb (39 Nm).
    14. Ensure that the timing mark alignment is correct and remove the tensioner stop pin.
    15. Vehicles W/ M/T: Install the timing belt guide and temporarily tighten the mounting bolts.
    16. Vehicles W/ M/T: Measure the clearance between the guide and timing belt. The clearance should measure 0.039 ± 0.020 in (1.0 ± 0.5 mm).
    17. Vehicles W/ M/T: Tighten the guide bolts 7.2 ft-lb (9.8 Nm).
    18. Install and secure the front timing belt cover with the mounting bolts.
    19. Install and secure the right timing belt cover with the mounting bolts.
    20. Install and secure the left timing belt cover with the mounting bolts.
    21. Install the crankshaft pulley.
    22. Install the A/C compressor drive belt tensioner.
    23. Install the drive belts.
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    Sep 30, 2010 | Subaru Outback Cars & Trucks

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