prime oil pump? - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Lounge (4) Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > GM Diesel Engines > 6.2L Diesel Engine
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Auto EscrowAuto LoansInsurance

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Closed Thread
 
LinkBack Thread Tools
Old 04-05-2008, 08:55 PM   #1 (permalink)
zetan
Diesel Master
 
Join Date: Aug 2005
Location: Portland, OR
Posts: 1,374
iTrader Score: 0 reviews

prime oil pump?

Before I put my oil pump back on the rear main cap, do I need to prime it? I only found one article that referred to doing that.
Do I just full the gear chamber with fresh engine oil and put the cover plate/pickup tube plate back on? Or just a light oil bath for the gears?

thanks
-z
__________________
1984 GMC Rally Custom G25 6.2L N/A fluiddampr NV4500 NP241 14 bolt & Dana 44HD 8 lug 4.10

1995 Chevy G30 6.5L '99 506 GM-6 turbo 4L80E 4.10 fluiddampr 4" exhaust

1960 Chevy K10 283ci 4x4 stepside in pieces
Offline  
Quick reply to this message
Sponsored Links
Advertisement
 
Old 04-06-2008, 03:14 AM   #2 (permalink)
jmay2174
Diesel Specialist
 
Join Date: May 2005
Posts: 565
iTrader Score: 0 reviews

The pump is self priming. Be sure the vacuum pump which drives the oil pump is properly installed. GM recommends that after installation and all fluids added to their proper level, disconnect the shut down solenoid and crank the engine listening for unusual noises. The oil pressure should also begin to rise. If everything seams ok, start the engine and hold it at 1000 rpms until the engine reaches operating temperature.

Joel
Offline   Quick reply to this message
Old 04-06-2008, 03:39 AM   #3 (permalink)
farmer0_1
Diesel Master
 
farmer0_1's Avatar
 
Join Date: Nov 2005
Location: cornelius oregon
Posts: 1,473
iTrader Score: 0 reviews
Send a message via Yahoo to farmer0_1

Old School Oil Burners (Old SOBs) Member

doesnt hurt to zetan to dump some oil in and turn by hand. i usually prime after oil is in pan and use a oil pump drive to turn it with a speed wrench. (hand crank wrench that ressembles a brace and bit.)
__________________
84 chev k10 new crate 6.5 short box 4x4. 02 duramax 6speed stick excab vin#1GTHK291X2E188472. 84 mercedes 300d 5cylinder diesel 85 c10 6.2 suburban two wheel drive. 87 k20 6.2 four speed four wheel drive with a us gear two speed. 93 dodge cummins 3/4 ton 4x4 five speed. 01 toyota fourrunner 78 dodge 4x4 crewcab soon to be cummins powered and a stick. drove stickshifts all my life and am new member of the brotherhood of handshakers #82. number18 of the portland dp.
Offline   Quick reply to this message
Old 04-06-2008, 10:18 AM   #4 (permalink)
BlueBurby1
Diesel Sr. Technical Member
 
BlueBurby1's Avatar
 
Join Date: Nov 2007
Location: Stouffville, ON
Posts: 7,755
iTrader Score: 0 reviews
Send a message via MSN to BlueBurby1

Ontario Diesel Place Chapter Member

Armed Forces Club Member

personally...i always prime the engine BEFORE installation as well....though we used an air drill at our shop....it also lets you know that the lifters and what not aren't locked...we primed by hand 4 times IIRC before we solved all our oil flow problems....do you want to run your engine not knowing WHERE the oil is flowing?
__________________
2000 Chevrolet 6.5TD CC LB SRW 4X4
El Presidente of the 3500 CC LB SRW Club "Land Yachts"
Member #2 of the TLFTN Club - Loud and Proud
DIAGNOSTIC HELP CLICK HERE
EDIT SIGNATURE HERE
BOOST CONTROL HELP CLICK HERE
CHECKLIST CLICK HERE

For Members with vehicles with PassLock or PassKey Security issues. PM for details on "Fixing" this system.
Offline   Quick reply to this message
Old 04-06-2008, 12:12 PM   #5 (permalink)
Fred482`
Diesel Master
 
Join Date: Sep 2004
Location: Oregon
Posts: 1,940
iTrader Score: 0 reviews

I fabricated a primer from an old vacuum pump. Remove the top expansion plug, weld an old, used, worn out 3/8" drive socket to the end of the shaft. Grind off the teeth from the driven gear (looks like a distributor gear) on the engine end of the shaft. Install the pump, turn the shaft with a 3/8" speed handle or electric drill with 3/8" square drive tool (available in 1/4" hex size to fit the drill and hold sockets).

I've made three of these, one from an old HEI distributor for priming SBC's, another from a 5.7D vacuum pump, fits Olds engines, gas and diesels and the last one from the above-mentioned 6.2 vacuum pump to fit the 6.2 - 6.5 engines. Very handy if you do a lot of engines.
__________________
ASE MAT and MTT
GM Master Truck Technicians Guild Charter Member
'82 GMC 6.2 N/A, 3/4T 4X4, THM 400HD, 4:10's, 240,000 Miles, 15.5 MPG highway, 13 City.
'84 Chev Suburban 6.2 N/A, 3/4T 4X4, 700R4HD, 4:10's, 210,000 Miles, 21 MPG highway, 16 City. Sold and performing daily duty in Indiana.
Offline   Quick reply to this message
Old 04-06-2008, 01:02 PM   #6 (permalink)
DieselPro
Diesel Master
 
DieselPro's Avatar
 
Join Date: Mar 2004
Posts: 4,018
iTrader Score: 0 reviews

I pressurize the entire oil circuit BEFORE I put the oil pan on. That way you can see were your loosing any excess oil from bearings, lifters, or whatever.

I use a complete rig I built utilizing a 1/4 hp motor, hydraulic pump, and filter system.

You can use a drill/oil pump combo as well. Just tap into the Oil Sending unit hole and use oil straight out of a container.

I run the oil pumps for pressure testing in my drill press. Just cap off the outlet port and put a pressure gauge there. Good for setting your max pressure.

If your really low buck but you still want to prime the engine before cranking > leave the glowplugs out and spin it over fast till you get oil pressure on the gauge.
__________________
Over Fueling the mind with innovation.
Counting down to the 4,000th post then I am out of here. Maybe.
Offline   Quick reply to this message
Old 04-06-2008, 02:29 PM   #7 (permalink)
High Sierra 2500
Diesel Sr. Technical Member
 
High Sierra 2500's Avatar
 
Join Date: Oct 2005
Location: Mid Michigan
Posts: 6,014
iTrader Score: 0 reviews

Since this engine was already running I don't think priming it is that important. Personally, I would hedge my bets by filling it up with oil as best I could, and just fire it up for a minute and let it idle (DON'T race it). Watch the oil pressure, if it doesn't come up pretty quick shut it down.
__________________
2000 K1500 Silverado Z71 ext cab short box 5.3 gas. 320,000 miles and counting

1927 Ford Model T pickup. Bone stock 22 hp 4 cylinder. Driven to work on a regular basis...
Offline   Quick reply to this message
Old 04-08-2008, 05:07 PM   #8 (permalink)
Fred482`
Diesel Master
 
Join Date: Sep 2004
Location: Oregon
Posts: 1,940
iTrader Score: 0 reviews

If I start any engine that hasn't run for several months, I try to prime it. Just because.....! Some engines pickup oil and build pressure almost instantaneously, others require some amount of cranking. With our modern oils, I won't trust residual lubrication to supply protection if I can't verify that it's still on the bearings. It's not that much of a hassle, with the right tools, to prime a system, provides peace of mind!

If you assemble and engine for long term storage and use a good assembly lube, it is only good for a few months. After that, the rebuilders recommend priming the system. Most rebuilders prefer you prime their engines prior to startup, even if it's a fresh rebuild. It just makes sense to have all the moving parts well lubricated.
__________________
ASE MAT and MTT
GM Master Truck Technicians Guild Charter Member
'82 GMC 6.2 N/A, 3/4T 4X4, THM 400HD, 4:10's, 240,000 Miles, 15.5 MPG highway, 13 City.
'84 Chev Suburban 6.2 N/A, 3/4T 4X4, 700R4HD, 4:10's, 210,000 Miles, 21 MPG highway, 16 City. Sold and performing daily duty in Indiana.
Offline   Quick reply to this message
Old 04-10-2008, 02:34 PM   #9 (permalink)
zetan
Diesel Master
 
Join Date: Aug 2005
Location: Portland, OR
Posts: 1,374
iTrader Score: 0 reviews

The engine has been sitting for about 3 weeks now.
With the pump fully assembled, the pickup tube hits the oil pan and makes it so I can't get a good purchase on the pump bolt to torque it down.
And since I can't fully drop the pan, i'm sorta stuck.

Looks like I'm going to remove the pickup tube/cover from the pump and loose my prime, torque the pump bolt down, install the pickup tube + plate onto the pump, then hope I can torque those bolts down easier. Then reinstall the pan, full with oil, then crank without starting a few times to hopefully get a good prime....
__________________
1984 GMC Rally Custom G25 6.2L N/A fluiddampr NV4500 NP241 14 bolt & Dana 44HD 8 lug 4.10

1995 Chevy G30 6.5L '99 506 GM-6 turbo 4L80E 4.10 fluiddampr 4" exhaust

1960 Chevy K10 283ci 4x4 stepside in pieces
Offline   Quick reply to this message
Old 04-11-2008, 12:33 AM   #10 (permalink)
farmer0_1
Diesel Master
 
farmer0_1's Avatar
 
Join Date: Nov 2005
Location: cornelius oregon
Posts: 1,473
iTrader Score: 0 reviews
Send a message via Yahoo to farmer0_1

Old School Oil Burners (Old SOBs) Member

zetan you will be fine. most folks don't even think about such stuff. we have farm equipment that sits all year and fires up and off we go.
__________________
84 chev k10 new crate 6.5 short box 4x4. 02 duramax 6speed stick excab vin#1GTHK291X2E188472. 84 mercedes 300d 5cylinder diesel 85 c10 6.2 suburban two wheel drive. 87 k20 6.2 four speed four wheel drive with a us gear two speed. 93 dodge cummins 3/4 ton 4x4 five speed. 01 toyota fourrunner 78 dodge 4x4 crewcab soon to be cummins powered and a stick. drove stickshifts all my life and am new member of the brotherhood of handshakers #82. number18 of the portland dp.
Offline   Quick reply to this message
Sponsored Links
Advertisement
 
Closed Thread

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
Lift Pump Prime Switch midnightrumbler 6.5L Diesel Engine 16 04-05-2010 12:26 AM
losing prime, fuel feed pump ? smacmoyle 6.2L Diesel Engine 11 09-03-2009 08:39 PM
Prime Pump Power Signal ShopSpecialties Vans 6 03-31-2009 10:43 PM
Fuel Pump Prime sensor Cetanecean 6.5L Diesel Engine 17 02-16-2009 08:48 PM
prime fuel pump alpacas Maintenance & Fluids 2 01-20-2008 05:53 PM


All times are GMT -4. The time now is 12:00 AM.


Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide

SEO by vBSEO 3.6.0