What happens when the timing chain breaks on an ATV?
When the timing chain breaks it is generally bad. Worst case is valve hit the piston since the crank was still moving but the valves were not. Valve stem can get bent and then sticks open. When the chain on my 325 engine broke, it was just fatigue from years of use.
What did the timing chain break on my sportsman 500?
On my 1999 Sportsman 500 the exhaust lobe on the cam was worn down completely. I replaced the cam and rockers. Set timing. Set valve clearance to .006 at TDC. Fired it up and it ran beautifully for 20 seconds. I gave it throttle and once I got to half throttle… “Snap!” Motor died and the timing chain had broken.
When does a timing chain start to wear out?
One of the most important components when it comes to regulating the timing of your engine is the timing chain. While timing chains can last for a long time, they do eventually wear out. However, before they break, they usually loosen.
Can a bad timing chain cause an engine to fail?
3. Engine won’t start or fails. A broken timing chain will cause an engine to not start or fail while driving. If the belt is already broken, the engine won’t have enough compression to start. If it breaks or jumps while driving, the pistons will be damaged from contact with the valves.
When the timing chain breaks it is generally bad. Worst case is valve hit the piston since the crank was still moving but the valves were not. Valve stem can get bent and then sticks open. When the chain on my 325 engine broke, it was just fatigue from years of use.
Can a timing chain jump cause a problem?
Of the many things that can go wrong with and engine, the timing chain jumping can be one of the most frustrating problems to have. Depending on the motor, it can cause all sorts of problems. They require a lot of mechanical skill to replace.
On my 1999 Sportsman 500 the exhaust lobe on the cam was worn down completely. I replaced the cam and rockers. Set timing. Set valve clearance to .006 at TDC. Fired it up and it ran beautifully for 20 seconds. I gave it throttle and once I got to half throttle… “Snap!” Motor died and the timing chain had broken.
How long does a car timing chain last?
Timing is an essential aspect of car motor operation. One of the most important components when it comes to regulating the timing of your engine is the timing chain. While timing chains can last for a long time, they do eventually wear out.