How does revving the engine in neutral cause damage?

How does revving the engine in neutral cause damage?

Some conrods will stretch/bend during excessive rpm acceleration. Worst case scenario is it will put greater unbalanced forces on the crankshaft and bearings (higher compression ratio only needs 10 thou). If the engine has tight tolerances it will also bend valves.

Can a car go from Redline to Full Throttle in neutral?

So my question is, on a normal street car with a rev limiter and wet sump, can any excess wear occur from revving your engine to redline at full throttle in neutral that wouldn’t also happen if you took it to redline in 1st – 6th gear? It is indeed mostly a rumor, but with some background.

What to do if your car Idles without an accelerator?

I jacked the car up and emptied the oil out before removing the idle control valve, cleaning it with petrol & WD40 and then putting it back on and putting new oil in. That was in June and it’s been fine since, although the engine does idle at about 1.5k when it’s cold but it’s an old car so it won’t be perfect.

When does my car stop revving without the accelerator?

Mine hangs revs at about 1500rpm when clutch is depressed sometimes. Will either drop to idle on its own after a few seconds or just sorts itself out when you move off again. Had it checked, ecu reset, no joy.

What happens when you Rev the engine in neutral?

More common in continued over revving – the cylinder head & block doesn’t drain the oil at the same rate that oil is pumped out of the sump, leaving the sump empty, common in the Rover V8 engines. This is very common in engines that don’t have the minimum oil required.

What should the RPM be on an idling car?

When you start your engine, and just let it run without pressing on the accelerator or putting it into gear, that’s idling. A properly idling engine should be able to maintain a steady but low rate of revolutions, somewhere in the vicinity of 1,000 RPM.

What does it mean when your car is idling?

Let’s start with a definition of idling. When you start your engine, and just let it run without pressing on the accelerator or putting it into gear, that is idling. A properly idling engine should be able to maintain a steady but low rate of revolutions, somewhere in the vicinity of 1,000 RPM.

So my question is, on a normal street car with a rev limiter and wet sump, can any excess wear occur from revving your engine to redline at full throttle in neutral that wouldn’t also happen if you took it to redline in 1st – 6th gear? It is indeed mostly a rumor, but with some background.

Posted In Q&A