ok, a little while ago i had a nitrous oxide back fire and blew up my intake manifold. However, i just replaced it last weekend and i missing on 2 cylinders right next to each other. I replaced my spark plug and switched out the coils to make sure it wasn't a bad coil. I did noticed i am leaking a little coolent, but i should still be running on all cylinders. Also, Idid go through the torque sequence when tighting down the manifold, but left the old gaskets on( it was late i thought they looked pretty, but i quess i was wrong.)

Do you think there is something wrong in side my heads? If so, when i pull off my valve cover, what should i look for?

 

I thought it was N2O?

 

bump

 

Givin me the cold shoulder eh?

Easy tiger, just a joke.

If it was me, I would have replaced the gaskets with new ones... Where is the coolant coming from?

 

the coolent is coming from the drivers side, and thats where the two cylinders are not firing.

cold shoulder[8D]

 

What I mean is.. Is it coming out of the intake manifold on the drivers side? on the coolant crossover?

 

The same pressure that blew up the intake manifold likely blew through your head gasket and it is coming from a water passage. Did you use new head bolts? They are TTY and not reusable. The metal gaskets can be used again, but you really have to clean them up and the head/block surfaces and torque 'em down with new bolts in the Torque-to-yeild multi-step sequence (tighten, loosen, tighten, tighten again, etc.)

 

Have you donecompression and/or leakdown tests--that would be the first thing I'd check?

 

what is the leak downtest?

4.6 poppy-(The same pressure that blew up the intake manifold likely blew through your head gasket and it is coming from a water passage.)????????

 

If you have 2 cylinder right next to each other that are misfiring then you have a blown head gasket. Do a compression check to verify. What 4.6poppy was saying is that the head gasket is blown out between the 2 cylinders and coolant is coming out of the water passage and going into the cylinders.