Failed compression test - What to do next?

[Bugsly17]

No car will even RUN with no compression like that, let alone have any power. Something is ****** with the head. And I'm done with skylines so I knocked 6000 off my asking price and o hope to get rid of it soon. Really good catch for someone who wants to fix it. New was for less than $400, perfect running car again.

[recoil]

Re-posting due to the thread sales hijack above.

Begin repost:
I will re-do with a tea spoon of oil.

Any idea why I fouled 5/6 plugs idling for a total of maybe 30 minutes?

The motor was extremely hot, maybe I have to go 1 heat range colder?

If I have more chance of a lot going wrong without fixing it now such as bad pistons etc, I might as well just re-build it now rather then spend extra money for not fixing what was wrong in the first place. I do plan on dropping a lot of money on the car, but the a lot of money takes a long time to build up so there are no immediate plans but with the mods I have I feel I could push close to 400hp with good compression.

I just did a good read on leak down tests to pinpoint the actual problem: http://vmaxoutlaw.com/tech/leakdown_tester.htm

I am going to buy one of these or have a shop do it and try to figure it out. I would like to adjust/replace the valves, replace rings, or replace the headgasket now before I have more problems rather than go the rice cooker route and just keep running it.

If anyone could help me out with the spark plug question too that would be really helpful.

[Bruizer]

Idling your car so long fouled your plugs. Don't idle long. My rich tune fouled plugs regularly because I don't drive it hard enough.

[recoil]

Damn, that sucks... I am trying to diagnose problems and needed to heat up the motor a few times and I'm ruining plugs lol. Sucks.

[Dragon Humper]

Unless they are getting totally plugged with crap, they are fine. A little bit of black stuff is no big deal. Just swap the rears out for the fronts and you will be good to go.

I'd run her for a while and see where it goes, putting about 2000km on it might just make it a bit better. If it's a ring issue, it will get better, if it's valves (specifically a chunk missing out of the face), it won't get worse as a best case but most likely will get worse as the valve continues to fall apart.


Jon.