All fluid will eventually leak through , thinner the fluid the easier it will go through the gaps, not a good way to check, stick to pressure test and proper cylinder leak down test.

I can literally hear the train outside

did you ever find the issue?

U have to put all pistons level at the same height at the bottom and put diesel in it

I don’t think it’s an accurate way to test, as there is no pressure involved in this test.

Dammit! I didn’t know you could check it like this hahaha

I check my pistons and before an hour all 4 was empty

Dude get a adjustable reg pleaseeee, dial that shit! She wants fuel!!

LOL

Block is cold god knows what happens when hot? Just a thought!!!

A compression test is better You don't have to take the head off , only fuel injector (disel) Or spark plug (gasoline)

What a load of rubbish.

Is this petrol or engine oil?

Hi there, can you please tell me or give me the link of the harness? I cannot find any online for my car same year and moddl

how hard was the swap ? it all bolts up right?

Deff not how u check rings... rings sapposed to have some sort of gap between em they arenot 100% sealing

It was shooting more air than the media I have one Medium compressor Naaa

This method works ? If woks , I thinks water should be better.

Thanks man! I had a blown head gasket or something similar (cracked/warped head, etc) and I’m planning on trying this either this way or with oil to see if the rings are still good since I have to get it registered within 30 days for insurance reasons (I’m hopefully getting my license soon and I got my policy on that car) and it would also save money to not replace them too, not just labor. Honestly as long as it runs and doesn’t slowly wear itself much worse I might just get it to pass the inspection and if problems arise or it leaks badly I’ll see about pulling the whole engine for a thorough rebuild.

2 hr to drain good?

Sounds like you need more initial ignition timing

When you eliminated the cold start valve that has an additional fuel spray that helps when the Z is in cold startup

Did you clean those pistons ontop before putting the fuel

Is it a ball bearing?

Hello, How long do you have to wait for this test? I poured oil into a cylinder and there was no apparent leak after letting it sit there overnight. The following afternoon, I noticed it went down a little. So, eventually the fuel/fluid will go past the piston rings if it sits long enough.

I'd say there is a leak

Hey mate Did you use petrol? Thanks nd great video👍🏻

All in the air compressor, cheap sandblaster and big compressor will be good. Expensive blaster, small compressor will be shocking

Mine was pointed the opposite way of where it was supposed to. Mine started having issues randomly on the road it would shut off out of nowhere then 5-10mins it would start back up again.

Car looks great keep the videos coming

How to check pistons with out heads motor still in car

She sounds mean bro would love to hear more of it. If youve got Instagram would love to see some more videos of it running

Can you just pour oil instead of fuel?

If it leaks it means that they are bad?

Got the same Clutch on my project but haven't finished and gotten it on the streets yet. How do you like it does it Grab good? Not wanting to pop clutched left and right but I'm hoping it grabs good and doesn't slip

Previous issue was the rings/pistons?

Looking forward to more build videos

Great video, very informative. Just subscribed. I'm doing a youtube 280z project. Feel free to subscribe to my channel

sold it soon after i made the repairs to get it running solid im working my 260z l28et look me up

what is the fuel pressure with the engine off and the pump on.

FSM has details, it is not as far you can go (to far) and not flush (not far enough).

Looks good man! Post a video if you get it repainted or do any other mods. The world needs more Datsun videos