Question about 1997 Chevrolet S-10 Pickup

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Correct timing of timing chain

When chain installed, engine wont rotate, as if valve hitting piston, help

Posted by on


1 Answer

Try you tube video
You need a service manual before
you start,if that isn't something you
know off the top of you head
The sprockets have marks,sort of hard
to get it wrong
The chain doesn't care where it goes, unless
you working on an over head cam

Posted on Jul 24, 2013


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Posted on Jan 02, 2017

  • 67 Answers

SOURCE: Broken timing chain

interference motor = bent valves.

Posted on Jan 31, 2009

  • 103 Answers

SOURCE: 2000 chevy S10 timing chain or belt? if broken

if its a 2.2ltr its a timeing chain and the r known for failing they have a cheap plastic slide that wears out prematurely causing the chain to jump or sometimes break. ive fixed a lot of them so i dont think its an interferince fit engine if its v6 4.3ltr u hardly ever have a problem with the timeing chain. its usually the gear at the bottom of the distributer wears out

Posted on Mar 20, 2010

  • 5763 Answers

SOURCE: timing chain broke does piston

This all depends on what year make and model car or truck,

Posted on Jan 01, 2011

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I have tried to turn the camshaft on a 2004 Suzuki Forenza to the timing mark but it would not line up it would not turn anymore what should I do

Not knowing how far your cam timing is off, your valves may be hitting the top one of a pistons. That may be why cam wont turn anymore.
May be best to back up the cam a bit, remove the spark plugs & with screw driver or wooden dowel probe the cylinders to see which piston is near the top.
Then rotate crank a bit to lower piston down the cylinders DO NOT USE STARTER to rotate engine while timing belt is off or valve damage may occur.

Jul 16, 2016 | 2004 Suzuki Forenza

1 Answer

What is a interference fit engine

Interference engines are those in which the pistons can make contact with the valves, and will do so if the timing belt (or chain) breaks, usually resulting in extensive damage. This is why such engines have belt replacement intervals which should never be exceeded. Non-interference engines may safely have the crankshaft rotated to any position while no timing belt is installed without pistons hitting valves. Why do we have interference engines you may ask? This is done to enhance performance by allowing longer cam opening times and higher cam lift.

Jan 15, 2015 | Cars & Trucks

1 Answer

Need the timing marks for a 2000 alero

please let me know if you have questions.
2.4L Engine
NOTE It is recommended that the entire procedure be reviewed before attempting to service the timing chain.
  1. Before servicing the vehicle, refer to the precautions section.
  2. Drain the cooling system.
  3. Remove or disconnect the following: Negative battery cable, Coolant surge tank, Accessory drive belt, Alternator
  4. Install an engine support.
  5. Remove or disconnect the following: Upper cover fasteners, Front cover vent hose, Right engine mount and bracket, Right front wheel, Right lower splash shield, Crankshaft balancer, Lower cover fasteners, Front cover
  6. Rotate the crankshaft clockwise, as viewed from front of engine (normal rotation) until the camshaft sprocket's timing dowel pin holes align with the timing chain housing holes. The crankshaft sprocket mark should align with the engine mark. The crankshaft sprocket keyway should point upward and align with the cylinder bores centerline. This is the normal timed position.
  7. Remove the timing chain guides.
  8. Remove the timing chain tensioner.
    NOTE Be sure all the slack in the timing chain is above the tensioner assembly when removing it. CAUTION The tensioner plunger is spring loaded and could fly out causing personal injury.
  9. Remove or disconnect the following: Timing chain, Camshaft sprockets

To install:
  1. Install or connect the following: Camshaft sprockets. Torque the bolts to 52 ft. lbs. (70 Nm),
    Camshaft sprocket alignment pin through the camshaft sprockets holes into the timing chain housing holes to position the camshafts for timing.
  2. If the camshafts are out of position and must be rotated more than 1 / 8 turn in order to install the alignment dowel pins, perform the following:
    1. Rotated the crankshaft 90 degrees clockwise off Top Dead Center (TDC) in order to give the valves adequate clearance to open.
    2. Once the camshafts are positioned and the dowels installed, rotate the crankshaft counterclockwise back to TDC.
      WARNING Do not rotate the crankshaft clockwise to TDC or valve and piston damage may occur.
  3. Install the timing chain over the exhaust camshaft sprocket, around the idler sprocket and around the crankshaft sprocket.

    Fig. Timing chain and sprocket alignment positions-2.4L DOHC engine

  4. Remove the alignment dowel pin from the intake camshaft. Using a dowel pin remover tool, rotate the intake camshaft sprocket counterclockwise enough to slide the timing chain over the intake camshaft sprocket. Release the camshaft sprocket wrench. The length of chain between the 2 camshaft sprockets will tighten.
    NOTE If properly timed, the intake camshaft alignment dowel pin should slide in easily. If the dowel pin does not fully index, the camshafts are not timed correctly and the procedure must be repeated.
  5. Leave the alignment dowel pins installed.
  6. With slack removed from chain between intake camshaft sprocket and crankshaft sprocket, the timing marks on the crankshaft and the cylinder block should be aligned. If marks are not aligned, move the chain 1 tooth forward or rearward, remove slack and recheck the marks.
  7. Tighten the chain housing to engine stud. The stud is installed under the timing chain. Torque it to 19 ft. lbs. (26 Nm).
  8. Reload the timing chain tensioner as follows:
    1. Form a keeper from heavy gauge wire.
    2. Slightly, compress the shoe plunger and insert a small screwdriver into the access hole.
    3. Release the ratchet pawl and compress the plunger completely into the hole.
    4. Insert the keeper between the access hole and the blade.
  9. Install or connect the following:
    Tensioner assembly to the chain housing. Torque the bolts to 89 inch lbs. (10 Nm). Tensioner shoe and retainer. Torque the bolts to 89 inch lbs. (10 Nm). NOTE Recheck plunger assembly installation. It is correctly installed when the long end is toward the crankshaft.
  10. Remove the alignment dowel pins. Rotate crankshaft clockwise 2 full rotations. Align the crankshaft timing mark with mark on cylinder block and reinstall alignment dowel pins. Alignment dowel pins will slide in easily if engine is timed correctly.
    WARNING If the engine is not correctly timed, severe engine damage could occur.
  11. Install or connect the following: Timing chain guides, New seal into the front cover by lubricating the seal lip and tapping it into place, Front cover and gaskets. Torque the nuts and bolts to 106 inch lbs. (12 Nm), Crankshaft balancer. Torque the bolt to 129 ft. lbs. (175 Nm), Right front lower splash shield, Front wheel. Torque the nuts to 100 ft. lbs. (140 Nm), Right engine mount bracket. Torque the bolts to 81 ft. lbs. (110 Nm) plus an additional 90 degree turn, Right engine mount. Torque the bolt to 49 ft. lbs. (60 Nm), Upper cover vent hose
  12. Remove the engine support.
  13. Install or connect the following: Alternator. Torque the bolts to 37 ft. lbs. (50 Nm), Accessory drive belt, Coolant surge tank, Negative battery cable.
  14. Refill the cooling system.
  15. Start the engine and check for leaks.

Oct 04, 2011 | Cars & Trucks

1 Answer

Cannot get 1,8 ohv engine to start. jumped time so I followed book to the letter to line everything up to retime it. Still won't start. got spark no start

If by jumped time you mean that the timing chain or belt was bad, resulting in the camshaft being out of time, your first step should be a compression test; presuming everything is correctly installed and timed. Many engines are not free- wheeling (having valve clearance the prevents pistons from hitting valves that are open at the top of its stroke), and once the camshaft goes out of time pistons start hitting and bending valves. I do not know whether your engine is or is not free wheeling.

Aug 06, 2011 | 1991 Subaru Loyale

1 Answer

Need to know timing chain installation on 1999 Suzuki Grand Vitara

Go to Auto Zone and get a repare manual to see how it is installed. Chances are, if that timing chain broke, the crank could've kept spinning, making the pistons hit the valves then bending them. This would happen if your engine is an interfearance-motor, an interfearance-motor is were the valves are really close to the pistons, this is done so the motor gets more horse-power. The timing chain keeps the cam and the crank shaft in time with eachother so the pistons don't hit the valves. Alot of compact cars and import cars and trucks of the 90s and up have these kind of motors in them. Therefore, you may have to get a valve job done by taking the heads off and bringing them in to some kind of repair shop.

Dec 21, 2010 | 1999 Suzuki Grand Vitara

1 Answer

When putting on a timeing chain on a ford f 150 5.4 tritron l where are the timeing marks how do u put the engine back in time

the yiming marks are on the cams and crank. the best way to do this if you never have done it before is to buy new chains and the will have links where you can math the timing marks on the sprockets to the chains. IMPORTANT!!!! make sure to rotate engine by hand from the crank to make sure the engine is in time!!! if you are off by one tooth you will bend a valve. this is a high interferance (the valves will hit pistons and break) motor.

Nov 20, 2010 | Ford F-150 Cars & Trucks

1 Answer

I need a diagram of timing chain replacement Thank You

During most engine rebuilds, a completely new timing assembly should be installed. If wear exists on any component, replacement of the entire assembly is necessary. Wear in the chain, gears, or sprockets means a timing lag, which results in poor engine performance.
The timing chain or belt is generally installed with the gears in their correct positions. Before installing a new chain, soak it in oil.
OHC (Overhead Cam) Engines
Some OHC engines use a chain drive; others use a belt drive. Removing the cover on some OHC engines that have timing chains is more difficult, because the cover often fits between the oil pan and the cylinder head. There are special procedures for replacing cam timing components in these engines.
Before a chain repair job, perform a leakage test on non-freewheeling engines to check for bent valves, so that an accurate repair estimate can be made.
OHV (Overhead Valve) Pushrod Engines
On many OHV pushrod engines, the crankshaft sprocket is installed on the crankshaft nose and the crankshaft is rotated to position piston #1 at TDC. At this point, a mark stamped onto the crankshaft sprocket is pointing directly upward (toward the camshaft).
The camshaft sprocket is then temporarily bolted to the cam and used to rotate the cam until a mark stamped on the cam sprocket is pointing directly downward (toward the crankshaft). The sprocket is then removed from the cam (without allowing the cam to rotate).
The timing chain is looped over the cam gear, the mark on the cam gear is positioned directly downward, and the chain is looped around the crankshaft sprocket. When the cam sprocket is attached to the cam, the timing marks on the crank and cam sprockets should be pointing toward one another. NOTE THIS IS FOR 2WD 4.0

May 22, 2010 | 2005 Nissan Pathfinder

2 Answers

Do the valves connect with the pistons on the 1992 plymoth voyage

you should be ok.. i have never seen valve damage on one of these engines after belt breaking..just retime everything and install a new belt..make sure you check water pump and tensioner bearing for looseness/wear

Nov 05, 2009 | Chrysler Voyager Cars & Trucks

3 Answers

Installed new timing chain but car wont start

What the last person said with the additional comment that being even one tooth off can cause it to run bad or not start. I prefer making marks on the gears and chain or belt- whichever you have and transferring the marks by teeth counting to the new belt or chain- fool proof. Did you rotate either the camshaft or crankshaft with the timing chain removed? If your engine is not a zero interference engine than you may have damaged the internal parts. Even on some zero interference engines, you can damage the camshaft by rotating it backwards. Your timing is just plain off or you may have damaged the engine. Sorry, don't know if your is a zero interference or not- I think most are not. I know my Miata is and my Eclipse was not. If it is not a zero interference engine and your marks are way off on your timing- just go ahead and save up at least the money for a new head and send it to mechanic. If it is a zero, and your marks look on- see if the interpretation of the mark could possibly be 1 tooth over on either the cam or crank. Make you go blind staring at it that intently and u can make mistakes.

May 12, 2009 | Infiniti G35 Cars & Trucks

1 Answer

3.1 tming chain

There are alignment marks on the timing set,and before you remove the old timing set,you must get cylinder number 1 in the firing order to Top Dead Center....then you can remove the old,and reinstall the new,timing set,but pay careful attention to the marks on each gear,in relationship to each other and where they line up.The new timing gear and chain set should have directions on where they are to line up,if not,you need to buy a Chilton manual for your specific car,as i don't have the specific information for your 3.1 engine.It sounds like your timing is WAY off,and when rotating the crank,a piston is hitting a valve...that means it's WAY out of not start the engine until resolved.The camshaft actuates the valves in relation to the crank and pistons' position,and when the valves open or close is VERY important for the engine to run properly,this is what i'm talking about (phased in) correctly.

Jul 27, 2008 | 1995 Chevrolet Lumina

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