Oil Cap Off Engine Running

If your really concerned you can have a competent mechanic run a compression test.

Oil cap off engine running.

If you leave i. If you have a regular car with the oil cap on top of the valve cover and you open it at idle all that happens is you get to watch the cam or rockers activate the valves. My car has 95000 miles. Now let us know the possible damages of driving with oil cap off.

Looking to buy a used car i was told that if air is blowing out of the oil fill cap when open while the engine is running it s a bad sign but i m wondering if this could be just how this model works. But you will get some condensation of oil on hot parts around it and a mess. My car has an automatic transmission. Also depending on the specific cars there are other things to check e g.

On the nissan sr20 engine a common fault is that the cam spray bars clog up which means the cams are starved of oil and it eventually causes an expensive failure when the swarf from the knackered cam shafts travels into the rest of the engine. You and your friends cars have a lot of life left in them most likely. Placing your hand over the oil fill cap is not a great way to measure blow by and determine an engine s condition. Contrary to some o.

So you take the cap off. The danger is the dust that gets in. The car might go some miles without any problem but the damages might cost you to fortune later. Those that do probably have a lot of blow by from bad rings.