Fuel Injector

[showgun]

My Question I was told I need to either clean or get new fuel injectors. The repair guy told me I had some type of spider assembly and after looking online for a good price I saw a posting where GM changed from the spider assembly to individual injectorsin 97' just wanted to know which one I need to purchase.

 

[Heavy Metal Doctor]

I'm in the middle of dealing with this myself....if your truck is a 97 like mine, then the new part is still a "spider" assembly, it's just been upgraded 'cause they had problems with the poppets sticking open and dumping fuel causing the engine to missfire on the effected cylinders along with possibly hard starting / extended cranking (all of what I've experienced).
If this is true for you, then do what I was instructed to do: go to your favorite parts store and ask for the updated complete "spider" injector assembly.

 

[Black96]

the upgrade is a SFI set up.

heres what the new style looks like.( on the bottom)

http://bertok.us/pics/l31-scpi-mpfi.jpg

very easy swap to do. just make sure u release the fuel pressure

 

[inthechateau]

I did the change on my 96 Hoe when I replaced the engine, I kept getting rich mixture codes and it was indeed the poppet vlaves. Increaded power and economy after the chane. Well worth the 238.00 i spent on it.

 

[Black96]

yes well worth the upgrade and also helps teach you the upper intake mainifolds layout if u ever have the intake gaskets leak.