I am replacing the intake manifold gaskets on my 2002 4.3 v6 and before i took the distributor out i marked the rotot and housing with the idea that when reinstalling the distributor my lines would match up thus ensuring that i was in the correct spot... my problem is now that i am reinstalling the distributor it will only seat in one location and my lines are not matching up... do you have any idea what my problem could be?

SOURCE: Noise under intake manifold

best thing to do is to take the intake and valve covers off, its possible you may have inadvertently sucked something up and it's in you intake. That is the best solution.

No telling what it is until you take things apart and take a look. It shouldn't be too hard, make sure you get new gaskets, gaskets are cheap anyways.

SOURCE: 1995 Buick Park AV intake manifold gasket starting to leak

THIS IS VERY COMMEN IN FACT JUST ABOUT EVERY SINGLE 3.1AND 3.4 AND 3.8 EVER MADE BY CHEVY LEAKS AT THE LOWER INTAKE ALL OF THEM AND USEALLY STARTS AT ABOUT 50000 MILES THE PARTS COST ABOUT 300.00 AT THE DEALER FOR NEW GASKETS AND COOLENT AND SEALENT ALL THE PARTS YOU WILL NEED THE PROBLEM IS ITS ABOUT A SIX HOUR JOB SO THE LABOR KILLS YA BUT IT IS ALOT OF WORK BUT THE GOOD PART IS THERE IS NO NEED TO REMOVE THE PUSH RODS ON A 3.8 LIKE YOU DO ON A 3.4 I CAN GIVE YOU THE STEPS IF YOU LIKE BUT THIS JOB IS BEST TO SEND TO A MECHANIC AS IT HAS A LOT OF LITTLE THINGS THAT MUST BE DONE OR YOU CAN MAKE A BIGGER MESS THEN YOU GOT ALREADY... HOPE THIS WAS HELP FULL LET ME NO IF YOU NEED MORE INFO

SOURCE: 2000 Grand Am Gt 3.4 V6 keeps overheating,

make sure cooling fan is working , check themastat , water pump .

SOURCE: intake manifold gasket replacement? radiator has a

nah its pretty simple for the upper intake. 10 to 12 bolts.

SOURCE: 1997 Chevy Tahoe Moisture in the distributor Cap

I have the same problem. I punched the screens all the way though that are down in the distributor. This did not correct the problem but it did slow it down. Now I only have to change the cap ever few months. I don't leave home without a spare cap.