street dreams

like topic states cylinder #1 has zero compression the rest have 220. what do u think is the problem i looked thru the spark plug hole and the piston looks fine and it moves up and down if i rotate the motor. i'm guessing its either the rings are completely shot or its the valves seals. but i have never seen a motor with zero compression in a cylinder. o and it barely runs spitting out a gang of black smoke and misfiring like crazy and it had nitrous on the car when i got it but i took it off

Br1anPham

Get a leakdown test done and you will find out where its leaking through.

But it shouldn't matter, its time for a tear down.

00Red_SiR

You my friend have a dead cylinder... You may be able to see the piston move up and down but that doesn't mean it's ok because you can't see all of it. I would say that the piston has a small hole in it or is missing a chunk, probably out of the ring land. More than likely that debris went up through the exhaust valve bending it and preventing it from sealing. One way or the other you're going to have to pull the head off and take a look at what happned. DO NOT TRY RUNNING OR DRIVING the car any further unless you want to totally destroy what's left of the engine. Sounds like the guy that ran the nitrous on the car before you did something stupid which resulted in your engine damage.

street dreams

hey it was a direct port but dam thats what i was afraid of

street dreams

oh and its not my car its my friends car and i told him not to buy it (it was at a auction) but he thought he was getting such a good deal and a nice car

00Red_SiR

That car's not going to be a good deal unless he has another engine sitting around waiting to go in it. If it has a direct port system on it the previous owner probably got a little greedy and jetted it incorrectly causing that damage.