I assume it's your timing belt, not a chain, which rarely, if ever snap. Depending on the make of the car and the engine you may, or may not, have serious engine damage.. DO NOT ATTEMPT to start the car, have it towed to your shop of choice. If there is no engine damage a timing belt replacement generally will run you 2 or 3 hundred bucks...if you did serious engine damage you may have to decide if the car if worth the money to have it repaired. What you need to know is whether your car has an "interference" or "non-interference" type engine.. In an interference type engine if the timing belt breaks the valves will "interfere" with the pistons as they travel up if the timing belt breaks, which results in generally catastrophic engine failure.. non-interference engines generally suffer little or no engine damage with a broken timing belt.. I broke a timing belt on my 1990 Toyota Supra going 70mph, but it was a non-interference engine and after having the belt replaced it was fine.. here is a good list someone put together on what type of engine is in your car.. you should find the engine type either marked on the engine or on a label under the hood, or the owners manual.. good luck. http://yourcarangel.com/2014/07/interference-engines-complete-list/
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If the chain is on wrong it could cause damage on some cars. The pistons could hit the valves, for instance.
Be sure to line up the chain accurately. You could be off , but not more than about 6 degrees.
Hope this helps.
well, that is a tough one. not being there, no indication of valves hitting pistons is not a very good check. if the chain jumped, it is very likely the chain guides and chain wore out from mileage or lack of maintenance. how many miles are on the vehicle?
bent push rods could have been caused when the chain broke and not from the chain been replaced wrong or the timing out.
if the engine was running when the chain broke the cam would have stopped leaving all the valves in the same positon as the mometum of the fly wheel continued to turn the pistons in the cylendars could hav come up and hitting the valves and bending the push rods. and or damaging the cylendar head.
recommend removing the head and have it checked for damage, as well as replacing the bent push rods, and cylendar gaskit. once the head is checked and the valves are seated well. then replace and follow instructions in the set up for the pistons and cam prior to replacing the chain and setting the timing.
Does it have a timing chain or belt. If it has an over square engine and the timing chain or belt has snapped, then the valves which let in the fuel and air and let the exhaust gases out travel up and down driven by the cam shaft and the pistons will travel up and down driven by the crank shaft. Without the belt or chain to keep them timed, they meet with great force, at least a top engine rebuild.
To check if the timing chain or belt has broken, you'll need to take the belt/chain cover off. Disconnect the battery first.
If its an under square engine, the pistons have a longer bore to travel, the pistons and valves don't meet.
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.
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.