leaking diesel filter housing 6.5 - Diesel Place : Chevrolet and GMC Diesel Truck Forums
Home Forum Market Place Garage Lounge (0) Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > GM Diesel Engines > 6.5L Diesel Engine
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Auto EscrowAuto LoansInsurance Chat Room

6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools
Old 08-14-2009, 12:44 AM   #1 (permalink)
Low Boost
Join Date: Jul 2009
Posts: 7
iTrader Score: 0 reviews

leaking diesel filter housing 6.5

6.5 turbo diesel, 94 chevy truck

I smelled diesel at first, couldn't see anything though. Then, I drove the truck a few miles and smelled it again, I looked underneith and it was dripping diesel pretty bad under the truck.

I looked around a while to see where it's dripping so much from. I think it's the diesel filter housing but can't verify yet. I don't think it's the fuel line's but It could be, but does'nt look like it.

Does anyone have experience with this?

thank you.

David in Florida.

Reply With Quote Quick reply to this message
Sponsored Links
Old 08-14-2009, 12:59 AM   #2 (permalink)
Diesel Specialist
matuva's Avatar
Join Date: Oct 2005
Location: Noumea - New Caledonia
Posts: 3,285
iTrader Score: 0 reviews
Send a message via MSN to matuva

Probably the fuel filter housing as you bet.
The culprit is very often the seal at the bottom. That seal is mounted to ensure leak proof at the fuel heater element which is going in the center tube of the fuel filter housing, less often, this is the heater element itself..
Quick fix, just a few messy when fuel filter housing is mounted with short hoses.

1994 full size BLAZER
Buddy's 3 banger Chip
Low stall converter (1200-1400 rpms)
M998 6.2l Humvee engine (casting 660)
and more ...

Last edited by matuva; 08-14-2009 at 01:00 AM.
Offline   Reply With Quote Quick reply to this message
Old 08-14-2009, 02:12 AM   #3 (permalink)
Diesel Apprentice
Join Date: Mar 2007
Location: Whidbey Island WA.
Posts: 446
iTrader Score: 0 reviews

filter leaks

Lots of stuff here on that ! your 94 needs new flex lines anyway, make the new lines longer. Mount filter on standoffs and then you can see/feel the problem ,IE leaking out of heater wires, leaking from water sensor, put some 2/6 planks across the fenders, remove the 15mm bolts to the filter and replace all the lines to and from the filter. I used metric lag bolts, some washers, on 6"by1/2" aluminum tubing. get diesel and or biodiesel rated lines!!! The planks will help get to the line to the injector pump once the filter is out of the way. mine had a 5/16 hose clamp at the pump which I removed with a ratchet wrench (kelsey Hayes brake tool) Tite fit but one can snake under the intake to reach the clamp, going from the back forword. I also put a tee in the line and a fuel pressure gage under the dash while I was there, (surplus center.com $20.00) not pretty but now have no doubt as to where to start troubleshooting. 2 years later all is well. Good luck!
92 chevy CK2500 354K miles. Underdash fuel gauge,teed into injector pump inlet with a needle valve air bleeder. Under dash ammeters on port and starboard glow plug circuits. Under dash oil pressure, and temperature guages. Rebuilt Tranny
Offline   Reply With Quote Quick reply to this message
Old 08-14-2009, 12:32 PM   #4 (permalink)
Diesel Legend
JMJNet's Avatar
Join Date: Feb 2006
Location: Richardson, TX
Posts: 15,693
iTrader Score: 0 reviews

The Suburban Club Member

Did you just change the filter or something? or it happened all of a sudden.

Check if the filter is seated properly first.
1995 GMC Suburban:
PMD in Bumper
Leroy Diesel Flight System PMD
Leroy Diesel Oil Cooler Line
4" Warpspeed Exhaust
Kennedy Diesel LP/OPS Harness
Bosch Duraterm GP
Heath Turbo-Master
AD244 Alternator

Last edited by JMJNet; 08-14-2009 at 12:43 PM.
Offline   Reply With Quote Quick reply to this message
Old 08-14-2009, 04:28 PM   #5 (permalink)
Diesel Fanatic
sirdiesel's Avatar
Join Date: Jul 2009
Location: Camp Lejuene, NC
Posts: 139
iTrader Score: 0 reviews

Try the simple stuff first

Mine leaked also and it was a stripped hose clap on one of the fuel lines. My bet it is something similar or a break in one of the fuel hoses. Once you get the bolts off to the fuel filter it is an easy inspection. Good luck.
1994 GMC K2500 6.5L "F" Burb with custom cammo
2011 Kia Optima SX turbo
Anyone who trades liberty for security deserves neither liberty nor security.
Benjamin Franklin
Offline   Reply With Quote Quick reply to this message
Old 08-14-2009, 07:08 PM   #6 (permalink)
Diesel Apprentice
phalfhide's Avatar
Join Date: Feb 2008
Posts: 437
iTrader Score: 0 reviews

mine was a o ring that seales the heater on the bottom of the filter
Just get a new o ring and you are back in business
1996 GMC Suburban C1500 6.5 Diesel "F"
3.42 Gears. Good highway Gears.
New I.P.at 93000 miles. (Previous Owner)
Relocated PMD in front bumper #9 Risistor.
Heath Turbo Master !WOW! POWER
7/16/09 removed vac pump. Engine runs much Better.
6/12/12 Replaced Steel rims with OEM 2500 aluminum rims. Cant beleive how heavy the steel rims are.Very very little improvement in MPG.
11/4/12 Replaced Cytalytic Converter with Fake.(inspection in my State) BIg differance.

6/27/14 270,905 New injector pump from Heath diesel The one from the dealership is junk
270,905on Original Engine and still going strong.
Next owner is the junk yard!
Offline   Reply With Quote Quick reply to this message
Old 08-14-2009, 09:02 PM   #7 (permalink)
Diesel Fanatic
Join Date: Jan 2008
Posts: 108
iTrader Score: 0 reviews

Mine did the same thing. I pulled the filter housing and the inside of it was rusted and the seals were bad. I ordered a new unit from gm parts direct.
1994 2500 4X4 X-cab almost all stock, 216,000+ miles, dash board ISSPro pyro, boost, and oil temp., High Idle mod., new glows, new injector return lines, new SSDiesel LP, OPS, Heath PMD relocation kit, all new brake lines, wheel cylinders, and p brake cables from front to rear, new fuel tank straps and cleaned tank, new fuel filter assy, new starter, oil cooler lines, crank position sensor, energy suspensions full front bushing set, pitman arm, idler arm and pivot, 4 ball joints, soot trapectomy,more to follow....Next is new injectors/Update: injectors done.
Offline   Reply With Quote Quick reply to this message
Old 08-15-2009, 01:38 PM   #8 (permalink)
Green Machine
She Don't Smoke!
Green Machine's Avatar
Join Date: Aug 2007
Location: Ohio
Posts: 4,296
iTrader Score: 1 reviews

Northeastern Ohio Diesel Crew Member

So have you found out where your leak is bright?

I'm going to be looking into my leak today lol... It is either coming from a leaky line, leaky connection at filter housing, or something leaking on the housing. Only leaks when the truck is off and I lose pressure after sitting... Leak isn't big enough to suck in to much air to stall truck (yet) but does cause hiccups every once in a while... Just glad I don't need to take off my intake to run the new lines .
Dyno on April '09 - HorsePower: 228 , Torque: 376 YouTube Video
Quote: "Mind over Matter - I don't mind cause you don't matter!"

Offline   Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Diesel Place : Chevrolet and GMC Diesel Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

PLEASE READ! You must check your email inbox for the confirmation link to complete registration. Please check your spam box if you do not see the email in your inbox.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to fix leaking 6.2 fuel filter housing? Or where to buy replacement? chevyr20usaf 6.2L Diesel Engine 10 03-08-2015 07:59 AM
Fuel filter housing leaking around wire jdmannj Duramax First Generation: 2001-2004 (LB7) 11 08-13-2014 12:13 PM
Fuel Filter Housing Leaking? AustinJones Fuel System, Air, Exhaust, & Emissions Upgrades 7 01-22-2011 01:19 PM
LLY: fuel filter housing sensor leaking thefishruler Duramax Second Generation: 2004.5-2005 (LLY) 5 01-06-2011 06:33 PM
Fuel filter housing leaking kiwaniansteve Duramax First Generation: 2001-2004 (LB7) 1 10-24-2009 05:11 PM

All times are GMT -4. The time now is 04:39 AM.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide

SEO by vBSEO 3.6.0