Run Away: How and Why Motorbikes Self-Destruct
- December 12, 2022
- 0
It is believed that the cause of the internal combustion engine’s structural death in three cases out of four is the gasket between the steering wheel and the
It is believed that the cause of the internal combustion engine’s structural death in three cases out of four is the gasket between the steering wheel and the seat: they were not used properly, not properly maintained, not properly repaired. However, it also happens that the engine can commit a real suicide. About why this happens and what to do in this situation, the portal “AvtoVzglyad” tells.
A diesel engine, especially when it comes to classic, proven and slightly forced ones, is an extremely reliable thing, for which even half a million on the counter are the heyday. There are fewer such devices in the modern passenger world, but they are still found today. Huge resource, low consumables and maintenance requirements. In short, start and know no problems. But even he, a mastodon, can suddenly and for no apparent reason commit “suicide” in the truest sense of the word. Mechanics call this event a “runaway”.
Let’s start with the theory: only a diesel engine can get into the spacing, and very rarely a carburetor “gasoline”. It looks scary, frankly: the engine quickly gains momentum, goes to 5000 – 6000 on the odometer and does not respond to driver movements. In addition, the arrow tends to the maximum until self-destruction occurs: at a certain moment, the timing system simply cannot cope with the task, the valves bend, the piston breaks through the wall, the shafts burst. “Hand of Friendship” in all its glory and the search for a new ICE assembly.
The best solution is to leave and let the engine die without hurting itself. But there are brave souls in the world who dare to stop this dance of death.
The reason for the man-made disaster under the hood is a jammed fuel rail: the high-pressure fuel pump delivers more and more diesel after an increase in speed, with only the pistons in the cylinders accelerating. The first thought is to cut off the fuel supply. And this is a major mistake: removing the pipe and pouring diesel fuel under pressure onto a hot engine is an extremely dangerous procedure. Yes, and this takes too long – the motor has time to sharpen itself. History knows cases when the ICE’s madness could be stopped in the simplest way – fifth gear was engaged in a stationary car. But, of course, this method is only possible on a car with “mechanics”.
The only universally working way is to shut off the air supply, because if there is no oxygen, then there is no combustion. Let’s just say right away: an attempt to close the air duct with your hand will end extremely badly for the latter, since the thrust at this time is comparable to that of a locomotive. It is better to use a large piece of polyethylene, cloth – you can try the same jacket – or something else with similar characteristics. Without oxygen, the engine will “calm down” on its own. But, having caught your breath and calmed down, you will not be able to start the internal combustion engine – you will need a tow truck and a visit to the gas station in any case.
First you need to find the true reason for such behavior so that it does not happen again. Second, examine the “battlefield” with a professional look, assess the likelihood of overheating, differences in timing marks and other possible problems. And thirdly, to pump out all the unburned fuel from the cylinders, which was pumped there in huge quantities. Because without doing this you can easily get a water hammer, or rather a “solar impact” in our case: the pistons will try to squeeze a huge amount of liquid and just bend.
Photo: abetterbmw.com
A diesel engine, especially when it comes to classic, proven and slightly forced ones, is an extremely reliable thing, for which even half a million on the counter are the heyday. There are fewer such devices in the modern passenger world, but they are still found today. Huge resource, low consumables and maintenance requirements. In short, start and know no problems. But even he, a mastodon, can suddenly and for no apparent reason commit “suicide” in the truest sense of the word. Mechanics call this event a “runaway”.
Let’s start with the theory: only a diesel engine can get into the spacing, and very rarely a carburetor “gasoline”. It looks scary, frankly: the engine quickly gains momentum, goes to 5000 – 6000 on the odometer and does not respond to driver movements. In addition, the arrow tends to a maximum until self-destruction occurs: at a certain moment, the timing system simply cannot cope with the task, the valves bend, the piston breaks through the wall, the shafts burst. “Hand of Friendship” in all its glory and the search for a new ICE assembly.
The best solution is to leave and let the engine die without hurting itself. But there are brave souls in the world who dare to stop this dance of death.
The reason for the man-made disaster under the hood is a jammed fuel rail: the high-pressure fuel pump delivers more and more diesel after an increase in speed, with only the pistons in the cylinders accelerating. The first thought is to cut off the fuel supply. And this is a major mistake: removing the pipe and pouring diesel fuel under pressure onto a hot engine is an extremely dangerous procedure. Yes, and this takes too long – the engine has time to grind itself. History knows cases when the ICE’s madness could be stopped in the simplest way – fifth gear was engaged in a stationary car. But, of course, this method is only possible on a car with “mechanics”.
The only universally working way is to shut off the air supply, because if there is no oxygen, then there is no combustion. Let’s say right away: an attempt to close the air duct with your hand will end extremely deplorably for the latter, since the thrust at this time is comparable to that of a locomotive. It is better to use a large piece of polyethylene, fabric – you can try the same jacket – or something else with similar characteristics. Without oxygen, the engine will “calm down” on its own. But, having caught your breath and calmed down, you will not be able to start the internal combustion engine – you will need a tow truck and a visit to the gas station in any case.
First you need to find the true reason for such behavior so that it does not happen again. Second, examine the “battlefield” with a professional look, assess the likelihood of overheating, differences in timing marks and other possible problems. And thirdly, to pump out all the unburned fuel from the cylinders, which was pumped there in huge quantities. Because without doing this you can easily get a water hammer, or rather a “solar impact” in our case: the pistons will try to squeeze a huge amount of liquid and just bend.
Source: Avto Vzglyad
Donald Salinas is an experienced automobile journalist and writer for Div Bracket. He brings his readers the latest news and developments from the world of automobiles, offering a unique and knowledgeable perspective on the latest trends and innovations in the automotive industry.
