Join Date: Dec 2003
nater006 is offline
Re: MFI spider injection help.
There shouldn't be any difficulties. Essentially, you have to unhook the fuel lines, intake assembly (assembly including airbox up to throttle body), throttle body, and plenum cover. You can probably remove the TB and plenum cover as one, but, if you're replacing gaskets/seals, it takes minimal extra time, and you can put a new seal under it.
After, simply unbolt the existing injector pod, remove the poppet nozzles, and install the new bracket and injector spider. Put new seals (it's like a big o-ring) under the plenum cover and throttle body, reinstall your fuel lines and intake, and away you go.
Helpful hint with the fuel lines: there is a bracket that holds them together and to the block, near the rear of the block. It's held on by only 1 screw I do believe. Remove the screw, and you'll have a *lot* more play in the lines to remove them from the existing injector and out of the way to remove the plenum cover.
Pretty sure that's all there is to it. The coil might be in the way - I don't quite remember. Just unbolt it and swing it off to the side. Distributor, upper radiator line, accessory brackets, etc, shouldn't need removing (typical stuff to remove for intake manifold gasket replacement)
EDIT: incidentally, if you're in the market, doing the intake manifold gaskets aren't too much more work. You do have to pull the distributor, coil, and yank the driver's side accessory bracket forward a couple inches to clear the front driver's side intake manifold bolt, but... it's not terribly more. Especially since the intake manifold gasket kits ($30-50) usually include all the necessary gaskets to do what you're doing, it'd be minimal extra money - just need an oil change, coolant, and the gasket kit. Also, it would give you a great opportunity to clean up the existing intake manifold before installing the new injectors. Again, not a mandatory thing but if you're even remotely in the market and don't mind putting extra labor in, it's not terrible to do.
Last edited by nater006; 09-10-2007 at 02:03 PM.