Question about 1999 Chevrolet Tracker

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Broken timing chain

If the timing chain breaks, is there enough clearance between open valves and the pistons to not crush the valves?

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Interference motor = bent valves.

Posted on Jan 31, 2009

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2 Answers

Timing chain if broken can it damage the engine


yes broken timing chain can and will damage an engine do not run vehicle until repair is made
broken timing chain Yahoo Video Search Results

Sep 16, 2016 | Cars & Trucks

1 Answer

I had a broken timing belt and replaced the heads, valve stems, seals, gaskets and springs. how do I time the piston to valve clearance to prevent kissing.


you don't change the piston to valve clearance
the valve timing does that as it opens and closes the valves so that the piston doesn't hit it
all the details for timing the valves are in the workshop manual as you have not bothered to include the make, model ,year and engine type in your post

Mar 14, 2016 | Cars & Trucks

1 Answer

Does the 1999 chevrolet cavalier have a timing belt or a timing chain and if it breaks do the valves hit the pistons.


The 99 cavalier 2.2 and 2.4 both use a timing chain and yes, if the chain breaks it can damage valves. If the engine still cranks over you can remove the upper coil module cover, remove a spark plug, roll the engine over and see if compression builds. If the engine does not crank over, the broken chain will prevent the engine from turning.

Feb 23, 2015 | 1999 Chevrolet Cavalier

1 Answer

What are the symptoms of a broken time chain on a 2006 4 cylinder Toyota tacoma


Strange things happen when a timing chain breaks. This chain drives the camshaft at exactly half the speed of the crankshaft. If the chain breaks it could jam the crankshaft so that the engine can't turn, even by hand. If the engine does turn and the chain is broken, you will hear an uneven cranking sound coming from the engine.
What usually happens is that one or two cylinders end up with all valves closed, and this causes a high compression as the engine is turned by the starter. The valves on the other cylinders remain open all the time and there will be no compression on these., so the engine sounds as if it is turning fast, then slow in very quick succession.
It often happens that, because the timing is out for the short while that the engine turns without the timing chain, the valve timing is out by so much that the pistons strike the valves and bend them, so that there is no compression whatsoever, and when you crank the engine with the starter, the engine just spins freely. In any case, whatever the symptoms, the engine will not start!

Jan 05, 2015 | Toyota Cars & Trucks

1 Answer

Does my 2005 mazda mpv have a timimg belt or chain?


YES

Mazda MPV 1999-06
Timing Belt

Print


General Information

Interference Engines
Engines, chain- or belt-driven, can be classified as either free-running or interference, depending on what would happen if the piston-to-valve timing is disrupted. A free-running engine is designed with enough clearance between the pistons and valves to allow the crankshaft to rotate (pistons still moving) while the camshaft stays in one position (several valves fully open). If this condition occurs normally, no internal engine damage will result. In an interference engine, there is not enough clearance between the pistons and valves to allow the crankshaft to turn without the camshaft being in time.
An interference engine can suffer extensive internal damage if a timing belt fails. The piston design does not allow clearance for the valve to be fully open and the piston to be at the top of its stroke. If the belt fails, the piston will collide with the valve and will bend or break the valve, damage the piston, and/or bend a connecting rod. When this type of failure occurs, the engine will need to be replaced or disassembled for further internal inspection; either choice costing many times that of replacing the timing belt.


Inspection


NOTE For manufacturer-s recommended service interval, refer to the maintenance interval chart located in this manual.
The average replacement interval for a timing belt is approximately 60,000 miles (96,000 km). If, however, the timing belt is inspected earlier or more frequently than suggested, and shows signs of wear or defects, the belt should be replaced at that time.

WARNING Never allow antifreeze, oil or solvents to come into with a timing belt. If this occurs immediately wash the solution from the timing belt. Also, never excessive bend or twist the timing belt; this can damage the belt so that its lifetime is severely shortened.


0996b43f8022cd94.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Never bend or twist a timing belt excessively, and do not allow solvents, antifreeze, gasoline, acid or oil to come into contact with the belt
Inspect both sides of the timing belt. Replace the belt with a new one if any of the following conditions exist:


Hardening of the rubber-back side is glossy without resilience and leaves no indentation when pressed with a fingernail Cracks on the rubber backing Cracks or peeling of the canvas backing Cracks on rib root Cracks on belt sides Missing teeth or chunks of teeth Abnormal wear of belt sides-the sides are normal if they are sharp, as if cut by a knife.

0996b43f8022cdaa.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Clean the timing belt before inspection so that imperfections or defects are easier to recognize


0996b43f802095a6.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Inspect the timing belt for damage, such as a broken or missing tooth, which may be due to a damaged pulley


0996b43f802095a7.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Back surface worn or cracked from a possible overheated engine or interference with the belt cover


0996b43f802095a8.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Side wear from improper installation or a defective pulley plate


0996b43f802095a9.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Worn teeth from excessive belt tension, camshaft or distributor not turning properly, or fluid leaking on the belt

If none of these conditions exist, the belt does not need replacement unless it is at the recommended interval. The belt MUST be replaced at the recommended interval.

WARNING On interference engines, it is very important to replace the timing belt at the recommended intervals, otherwise expensive engine damage will likely result if the belt fails.

Jul 03, 2012 | 2005 Mazda 3

2 Answers

2006 pontiac vibe getting close to 100K and feel the need to change the timing chain. Someone advised that is this breaks it destroys the whole engine Trying to divert trouble later.


It is personal taste. Some places recommend that timing CHAINS be replaced every 90K-100K, but others drive until there is some change in their engine performance that would indicate the timing chain and then change it. Since you have the timing chain and not the timing belt it is up to you.

Generally, I will replace timing chains IF I have to pull my engine out of the car for any reason, but won't change it at set intervals.

Jul 07, 2011 | 2006 Pontiac Vibe

1 Answer

VALVE TO PISTON CLEARANCE ENGINE


The 2.2 eco is a chain driven engine it does not have a timing belt but if for some reson the chain were to break I would imagine there would be some damage but having the chain break would be something I personally have never seen. Hope this helps

Mar 02, 2010 | 2004 Chevrolet Cavalier

2 Answers

Are the V6 engines Free spinning?


Hi Lukegerny,
No,the V6 engine is not free spinning. If the timing chain breaks, leaving the valves open as the piston moves through its travel,there will be damage to the valves.How much damage will depend on speed of engine and length of time it ran. You can perform a leak down test to check the condition of the pistons and valves. It will tell you if the valves are not sealing,without having to take it apart. Thanks,Chuck.

Feb 27, 2010 | 1998 Ford Explorer

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

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