LT4 Fuel Filters
Melting Slicks
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
Re: LT4 Fuel Filters (mikeslt4)
8000 is overkill. I lean toward every 30,000 miles. Purchased my car with 50,000 and pretty sure it never had been changed-I think that will be true with many non-dealer/no enthusiast maintained cars unless a problem arises.
I don't know what the factory service manual shows.
I don't know what the factory service manual shows.
Melting Slicks
Joined: Apr 2000
Posts: 3,198
Likes: 2
From: Northern CA
Re: LT4 Fuel Filters (No Go)
I don't know what the factory service manual shows.
Safety Car
Joined: Mar 2000
Posts: 3,620
Likes: 2
From: Hillsboro OR
Re: LT4 Fuel Filters (grndspt)
Its on the passenger side on the frame just behind the cowl. The tough part is to get it out without taking a bath in gasoline. I replace mine after the car sat overnight. I releived the fuel pressure in the fuel rail and then took off the cap on the fuel tank. You'll need a couple different wrench sizes, 10 mm socket, pan fo the gas and safety glasses to keep the fuel out of your eyes.
Before you put the new filter in, blow through it and then do the same once the old one is off. That will give you an idea of how much pressure is lost in the filter.
GM is Full of sh_t when they tell you it dosen't need servicing. 25K is probably a good service interval.
Before you put the new filter in, blow through it and then do the same once the old one is off. That will give you an idea of how much pressure is lost in the filter.
GM is Full of sh_t when they tell you it dosen't need servicing. 25K is probably a good service interval.
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Le Mans Master
Joined: Dec 1999
Posts: 6,516
Likes: 4,840
From: One Hour From Boston!
Re: LT4 Fuel Filters (DenverLT4)
I do it every 12 months. Here's what I do:
* Pull the fuse for the fuel pump.
* Start it up.
* After the car stalls, do the swap.
* Put the fuse back in and start her up.
* Enjoy!
If you skip pulling the fuse, you'll be dealing with a lot more gas leaking out!
* Pull the fuse for the fuel pump.
* Start it up.
* After the car stalls, do the swap.
* Put the fuse back in and start her up.
* Enjoy!
If you skip pulling the fuse, you'll be dealing with a lot more gas leaking out!
Race Director
Joined: Oct 2000
Posts: 14,064
Likes: 1,166
From: N. Alabama
Re: LT4 Fuel Filters (mikeslt4)
I just changed mine this morning for the first time (50K miles). Man-o-Man, we ought to start a club for those that have done this themselves. I feel as though I have been initiated. What a pain on that top connection. No leaks,....yet. What tricks did you guys use on that top connection? All I had was a small adjustable that could get to it? :smash:
Racer
Joined: Jul 2001
Posts: 393
Likes: 1
From: Houston TX
Re: LT4 Fuel Filters (southern_son)
The only trick is to wedge a wrench on the top line and turn the filter from the bottom. I was thrilled to discover that the connections on mine had small dabs of loc-tite. This made breaking the top connection lose oh so much fun. :U
Jason
Jason
