WVZR-1

STARTERS - I don't own an LT1 C4, have never owned one (neither a 'vert or a coupe). Have I changed a fuel filter on one? I'd think so but it ain't been recently and if I did it would have been on a lift with maybe "no issues".

I've seen it mentioned to remove from the top after release of the push-to-connect, I've seen mentioned to drop it to the bottom after release of the push-to-connect. Will this work on all years or is it maybe a '94+? Does the 'vert X-brace create issues? If a lift is available is it easier to accomplish from underneath?
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I'm assuming that maybe it's all years but thought I'd ask. The feed line from the filter to the rail I would think is anchored along the way. Is it? Front wheels off the ground I'm sure and if you've specifics about disabling fuel pressure maybe include it.

I don't often see O-rings mentioned and most times when they are it's mentioned "generic" from AP store assortment. That just ain't right.

If I had one to do today I'd maybe use the search tool but for informational purposes "for all" I thought I'd just start a NEW THREAD.

Post year, coupe or 'vert and if you've maybe obstacles that could be encountered.

ColaBear

Just did mine a couple of weeks ago.

1996 LT1 coupe.

Disconnected the quick couplers at the fuel rail on the manifold.
Removed the fuel line holder on the side of the heater box.
Disconnected the 2 lines on the lower side of the filter (filter to fuel tank side).
Plugged the main feed line into the filter with a small rubber plug. As it was, I still lost a couple of gal. of fuel. Use a catch pan.
Pulled the filter and lines up through the engine bay. (My filter was not tight in the frame clamp so it came right out)
Changed the filter from the main line and re-installed.

Notes.
Car was up on jack stands. Front only.
Removed the inner fender liner on the passenger’s side to help with pulling the lines with filter attached and to help with getting it back down into its holder on the frame.

WVZR-1

The "notes" section is maybe the more valuable information. THANKS!!

That I'm assuming would work for '94+ coupes, now a post by a later 'vert owner and a couple maybe from '92/'93 owners.

DaCapt

ColaBear

@DaCapt,

I based my filter change on this video. He leaves a little out is spots but it was good enough to help get the job done. Didn't save the video because I don't plan on doing this again.

PLRX

The fuel filter replacement on the LT Vettes are a major PITA.

I have an idea on how to do a mod for it to be "clipped" on with quick fasteners like a new car. All the hardware is for sale by Dorman, and Russell.

Joe C

(without a lift) on my 96 LT1 coupe, in a nutshell, I disconnected the fuel line on the inlet side of the filter. I then disconnected the fuel line at the top of the motor, and slid the filter/fuel line assembly down and from the bottom, I then disconnected the discharge side of the filter. I could not get the fuel line/filter assembly up through the top. anyway, replaced the filter, and reverse order to reinstall. I would think the "x" or cross brace would cause an interference problem. I never thought it was a difficult job, in fact, I thought it was as easy, if not easier than an L98 car. BTW, I just used a generic disconnect tool (lisle 37000) for the fuel line disconnect -

93Rubie

I just disconnect the bottom fitting (pinch off the fuel feed hose at the tank so it does not siphon, ASK me how I know) and then pull the filter up thru the top of the engine bay. I didn't have much trouble doing it that way. Then the top fitting is EASY to get to.

WVZR-1

I was hoping you'd stop by.

So ... "ColaBear" in his notes and description has it pretty well cover then maybe? Yours is a '93 so '92 would be the same.

Does a 'vert present any particular challenge?

bac22

Not really...I wrote this up many many moons ago. Granted not as easy as today's cars, but I still got it done fairly quickly with little headache:

http://corvette.spectraaccess.net/vette/technical.htm

WVZR-1

I had tried to access that info and link previously and it came up "invalid/not available" so I started this thread and thought you might stop in. I had emailed you also but didn't know if that worked or not.

Would you think the 'vert brace creates issues? I believe it's confirmed that all '92+ can be accomplished this way and then there's always the option to "drop it" to the bottom.

Thanks for stopping by

jehuds10

On my 95 vert I ended up dropping the X brace down for extra clearance issues. Didn't drop it completely but just hanging down for extra room. I had mine on a kwik lift, which made it easier moving around under the car but still a huge PITA.

93Rubie

No idea on the verts but with the x brace and knowing where it mounts...yes it will a PITA on those cars with the brace on.

WVZR-1

No one with a 'vert has checked in so it seems a 'vert owner could assume he may just need to loosen and drop maybe the right front some. Filter it seems is more easily "dropped" by some or "pulled" by some. I got a couple PM's that mentioned dropping and pulling but didn't respond to thread as they felt they were short on "the how I did it"!

The only thing that I saw no one mention is the O-rings for the Saginaw style fuel fitting. I've had GM's for years and always keep a 1/2 dozen or so of both part numbers around but I'd think it maybe a good idea to have some in hand "always".

Depending on the C4 there's only 2 numbers for supply and return.

Supply/return if yours is the larger diameter - GM 22514722 and if your return is the smaller diameter - GM 22516256

OE/GM/ACD or equivalent but NEVER "generic".

Retainers at the "push to connect", I'm familiar with the tool and procedure to remove but I'm going to try and get a hands on to check the assembly of.

It might be interesting to see if the GM 12522917 and 12522916 connector kits could be "cannibalized" if need be.