HELP! Woes with my impala repair

Like 99% of all Gm vehichles with a 3.4 V6 my intake manifold went. I did it my self according to the book and managed to get the car back together however upon starting it it shook and rattled like the spark plugs were crossed and dies shortly after coming to life. Upon checking the wires to see if this were the case and coming up empty handed can any thing elemake a car run like that (i.e. a bad/damaged injector(s), a damaged wire to the coil pack ). If it was merely a damaged wire wouldn't the car still run?? There is a slight gas smell in the oil which is of course a sign of the firing sequence not being right but that being ruled out on my car (at least from the sparkplug end) has left me baffled. Any help would be appreciated.

 

I believed this was a recalled item, why didn't you have the dealer fix it for free or at least pay for half?

You did put the push rods back in correctly? If you didn't, it can cause bad engine damage.

Make sure all hoses are installed correctly.

Google search how to test wires and coils. You will need a multimeter to Ohm them out.

 

2 different length pushrods to the valves.........Intakes take the short ones, exhausts the longs........If you crossed one on reassembly, you now have a bent valve and the heads are now gonna need to come off.......

 

I agree with pushrod length i have done it myself put them in wrong also make sure you got all the connections back together there are several plugins that are somewhat hard to get at and if it was your first time doing this you could miss some when going back together recheck your work also pull spark plugs out inspect them if you used any type of spray cleaner it can take a little bit to work this out and while you have the plugs out you can check to see if you bent a valve put your finger over the plug hole and have someone crank the engine just becareful of rotating parts no need to get hurt while checking this out good luck!

 

I was careful not to mix them up as I took them out I made a litt carrier out of a box bottom with 12 holes in it. I noticed while some of the rods were augmented nearly straight up and down the other half were at a near 30-45degree angles. Is the difference in length of the push rods noticleable by inches or mere fractions of inches??

 

you would be able to see the diff also ck for vacume leaks