Fuel Filter Question
Thread Starter
Pro
Joined: Aug 2005
Posts: 630
Likes: 2
From: BEMIDJI MN
Fuel Filter Question
I will be changing my fuel filter one of these days. (87 Coupe) I have read tips before on relieving the fuel pressure. One said to remove the fuse and crank her till the pressure is relieved. Now I just read where all you have to do is depress the schrader valve on the fuel rail (using a rag and glasses to prevent spray and spillage) This seems quite simple. This would appear to be much easier than removing the fuse. Comments from anyone who has done this would be appreciated.
Racer
Joined: Oct 2002
Posts: 416
Likes: 2
From: Westfield MA
Originally Posted by Billy Stargazer
I will be changing my fuel filter one of these days. (87 Coupe) I have read tips before on relieving the fuel pressure. One said to remove the fuse and crank her till the pressure is relieved. Now I just read where all you have to do is depress the schrader valve on the fuel rail (using a rag and glasses to prevent spray and spillage) This seems quite simple. This would appear to be much easier than removing the fuse. Comments from anyone who has done this would be appreciated.
Supply filter p/n GF 481
Return filter p/n GF 157
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
To make the replacement a little easier, get the tool to release the quick-release connections on the in/out lines and pull the whole assy with filter out. Replace filter and drop the whole assy back in.
Remove the bolts along the passenger rail about a half dozen, the release the upper bolt to the frame then disconnect the line and the lower bolt. Otherwise you get fuel on you getting to the upper bolt.
Use nitrate gloves. Fuel is nasty on the skin.
Remove the bolts along the passenger rail about a half dozen, the release the upper bolt to the frame then disconnect the line and the lower bolt. Otherwise you get fuel on you getting to the upper bolt.
Use nitrate gloves. Fuel is nasty on the skin.
Le Mans Master
Joined: May 2005
Posts: 5,214
Likes: 65
From: Queensland, AUSTRALIA
Originally Posted by AGENT 86
Pull the pump fuse while car is running. It is easier, safer and cleaner than bleeding the pressure at the schrader valve.
Originally Posted by RRT vette
100%
Le Mans Master
Joined: Sep 2003
Posts: 5,874
Likes: 0
From: Littleton CO
Something rubbed me the wrong way about intentionally letting the engine starve for fuel, so I used the valve on my first try (still need to finish the job after reading a few helpful hints).
1) It still took a long time for the spillage to stop once I disconnected one end of the filter. It was a small flow, but a real pain to deal with.
2) Some fuel got onto the motor from the valve, and the residue caused a very strong odor after I drove it. I thought I had a leak at first and was quite concerned when the garage stunk of gas all evening.
Next time, I'll be pulling the fuse.
1) It still took a long time for the spillage to stop once I disconnected one end of the filter. It was a small flow, but a real pain to deal with.
2) Some fuel got onto the motor from the valve, and the residue caused a very strong odor after I drove it. I thought I had a leak at first and was quite concerned when the garage stunk of gas all evening.
Next time, I'll be pulling the fuse.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
Another thing to consider is plan to do it first thing in the morning if you can when the Vette has sat overnight. When I did mine, I wanted to run it up on the ramps so I put them up ran the vette up, then pulled the fuse started it and let it run until it died. Removed the gas cap and when I did the service in the morning I barely got the rag damp from excess.
For a few bucks at the local auto parts, you can get a fuel pressure gage with relief so you can vent the excess fuel to a container. Much better way of doing the service.
For a few bucks at the local auto parts, you can get a fuel pressure gage with relief so you can vent the excess fuel to a container. Much better way of doing the service.
Le Mans Master
Joined: Dec 2004
Posts: 7,475
Likes: 2
From: Austin TX
St. Jude Donor '07
I pulled the fuse while the car was running to relieve the pressure. but after removing the filter, gas kept coming out and wouldn't stop. The gas was siphoning from the tank, so i had to disconnect the fuel hose from the tank to stop it. The filter was a major pain to change, i don't look forward to doing it again.
Drifting
Joined: Jan 2005
Posts: 1,325
Likes: 47
From: South Florida
Originally Posted by Jet-Jock
To make the replacement a little easier, get the tool to release the quick-release connections on the in/out lines and pull the whole assy with filter out. Replace filter and drop the whole assy back in.
.
.
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
Yep, I got mine at CarQuest. It's a set of six tools. They are plastic collars that fit over the fuel line and press into the fitting to release it. Very simple. You pull the dust covers off to access the quick disconnect.
Drifting
Joined: Jan 2005
Posts: 1,325
Likes: 47
From: South Florida
Originally Posted by scott89
Raising the front end helps alot before you pull the fuse of depress the schrader valve.
Thread Starter
Pro
Joined: Aug 2005
Posts: 630
Likes: 2
From: BEMIDJI MN
Originally Posted by AGENT 86
Pull the pump fuse while car is running. It is easier, safer and cleaner than bleeding the pressure at the schrader valve.
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
Another option is to let it sit over night with the fuel cap released. Don't put the key in and turn it to RUN until you've disconnected the battery as that will re-pressurize it. Anyway, most of the pressure should be bled off and you should only get a little bit of fuel out of it.