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04-23-2012, 05:42 PM
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#1 |
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Registered User
Join Date: Jan 2010
Location: coweta, ok
Posts: 86
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No oil pressure
I was going to start my ls6 for the first time this weekend so i thought i would unhook ignition from the msd box and crank till i got oil pressure then fire. BUT i never got pressure. any ideas? im gonna check the oring on the pickup tube if nobody else has an idea. thanks
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04-23-2012, 09:40 PM
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#2 |
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Still Just Havin Some Fun!
 
Join Date: Jun 2007
Location: Piedmont, Oklahoma
Posts: 1,145
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Re: No oil pressure
how long did you crank it? Mine took a little to build pressure...
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a green one with some stuff done to it.... |
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04-23-2012, 09:48 PM
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#3 |
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Senior Member
Join Date: Nov 2007
Location: Greenville, SC
Posts: 873
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Re: No oil pressure
I couldn't get pressure until it fired off. Worried me some at the time but it was fine.
TR
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1965 C10 SWB Fleet Two owner LS2 Swap Thread http://67-72chevytrucks.com/vboard/s...d.php?t=413880 |
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04-23-2012, 10:19 PM
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#4 |
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Senior Member
  
Join Date: Oct 2011
Location: Wolfforth, Texas
Posts: 976
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Re: No oil pressure
I cranked mine for 10 sec 7 times before I had pressure
Posted via Mobile Device
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Craig 1966 Chevrolet C10 - Supercharged LS3 1968 Chevrolet Camaro 1957 Chevrolet 2dr Hardtop "It makes sence if you don't think about it"  Mesquite 1966 C10 - LS3 W/ Air Ride http://67-72chevytrucks.com/vboard/s...=1#post4989763 |
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04-23-2012, 10:31 PM
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#5 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: No oil pressure
cranked mine.....then pulled it and yanked the pan, checked, reinstalled motor and cranked some more (keep in mind this was a brand new motor)....finally decided to let it fire and see what happened...oil pressure came right up!
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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04-24-2012, 01:14 AM
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#6 |
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Registered User
Join Date: Feb 2012
Location: davidson north carolina
Posts: 105
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Re: No oil pressure
ls motors are pain in the butt to prime up....let it crank and run a few seconds shut it off and repeat and then when you get preasure run it at 2000rpm until the lifters get pumped up(because more than likely they'll be making some racket)...car craft or hot rod had a neat and in-expensive write up a year or so ago on how to make a priming kit for ls motors...good luck
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04-24-2012, 09:22 AM
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#7 |
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Registered User
Join Date: Jan 2010
Location: coweta, ok
Posts: 86
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Re: No oil pressure
well i guess i will just fire it up then and see what happens. i will let yall know what happens. thanks
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04-24-2012, 02:08 PM
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#8 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: No oil pressure
there is a way to set up a priming system...using a bucket full of clean oil, some hose and a drill w/pump head and rig a setup that primes the motor thru a "external cooler fitting" type setup.
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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04-24-2012, 11:04 PM
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#9 |
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Senior Member
Join Date: Nov 2007
Location: Greenville, SC
Posts: 873
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Re: No oil pressure
There is a priming procedure in the service manual. You pull a oil galley plug in the front drivers side of the block and use a hand pump to fill the oil passages with a quart or two of oil, then top the oil off. (Special GM tool but just looks like a hand pump, they aren't building pressure just filling the passages.)
TR
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1965 C10 SWB Fleet Two owner LS2 Swap Thread http://67-72chevytrucks.com/vboard/s...d.php?t=413880 |
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04-25-2012, 11:19 AM
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#10 |
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Registered User
Join Date: Jan 2010
Location: coweta, ok
Posts: 86
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Re: No oil pressure
well I decided to go ahead and start it and see what happens and BAM!!!! oil pressure. It fired right up and just sit there and idled like its been running for years. I am so happy with my decision to go LS when i get water in it and can let it idle a little longer i will get a video. thanks for the info guys.
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04-26-2012, 02:49 PM
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#11 | |
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Senior Member
Join Date: Oct 2011
Location: Wolfforth, Texas
Posts: 976
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Re: No oil pressure
Glad it all worked out, those first starts can be a little hard on the nerves
  Quote:
__________________
Craig 1966 Chevrolet C10 - Supercharged LS3 1968 Chevrolet Camaro 1957 Chevrolet 2dr Hardtop "It makes sence if you don't think about it" Mesquite 1966 C10 - LS3 W/ Air Ride http://67-72chevytrucks.com/vboard/s...=1#post4989763 |
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04-25-2012, 08:48 PM
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#12 |
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Registered User
Join Date: Feb 2012
Location: davidson north carolina
Posts: 105
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Re: No oil pressure
i usually take my thermostat apart at 1st and then run it awhile to make sure coolant circulates thru the block and heads and then put the the plunger assembly back in....its alittle messy,but it gives me peace of mind...
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