Injector leak down test doesnt work.

[Rawze]

(06-30-2019 )dhirocz Wrote:  Ive tried it both ways. The only way im getting bubbles is if I crank it at least 5 seconds. I get no movement whatsoever when I bar it over, no bubbles. Ive probably rolled it over 100 times or more by now.

All I can confirm is I get bubbles on both the front and rear bank. I replaced 1 and 6 last year. I could just put in the other 4, seeing that I cant verify what cylinders are leaking exactly. Im not expecting miracles in mileage though.

If you can't get it to leak while barring the engine right after cranking it, then don't worry about it. It is not bad enough to justify replacing injectors yet. -- Be sure also however, you have re-adjusted all the valves and injectors before performing this test. It will show leaky if the injectors are out of adjustment.

also... if your engine is easier to turn over than other people's ... don't assume its worn out. I thought that about mine, hence one of then reasons I wanted to inframe it,.. but in all reality, it was much easier than other people's because it was not carbon-packed like most people's engines are.

a carbon packed engine has a lot more resistance when turning it by hand than one that is clean on its insides. I would imagine that this would also have a large impact on overall fuel mileage as well.