Prime the engine somehow or just start it?

Reply Subscribe

Thread Tools

Search this Thread

Jun 2, 2011 | 02:49 PM

Taylor1969

Thread Starter

Teching In

iTrader: (2)

Joined: Feb 2006

Posts: 37

Likes: 0

Prime the engine somehow or just start it?

Hi All,

Swapped the pan on an LS2 that I am swapping into my Camaro - Can I fire it up directly after a few cranks with no fuel or do I need to follow a special procedure.

Thanks,
Chris

Last edited by Taylor1969; Jun 2, 2011 at 03:11 PM.

Jun 2, 2011 | 03:57 PM

rotor vs. piston

TECH Enthusiast

iTrader: (3)

Joined: Jan 2004

Posts: 583

Likes: 3

Cycle the key a few times to let pressure build up in the rail and you should be good to go.

Jun 2, 2011 | 11:29 PM

itsslow98

TECH Senior Member

iTrader: (18)

Joined: Apr 2006

Posts: 6,762

Likes: 5

From: Maryland

Quote:

Originally Posted by rotor vs. piston

Cycle the key a few times to let pressure build up in the rail and you should be good to go.

Yep

Jun 3, 2011 | 12:14 AM

bmf5150

TECH Fanatic

Joined: Nov 2010

Posts: 1,679

Likes: 0

U pretty much just fire it up and watch oil guage for pressure!

Jun 3, 2011 | 12:28 AM

-M-

Registered User

Joined: Jun 2011

Posts: 42

Likes: 0

From: N. Fort Worth, Texas

Quote:

Originally Posted by rotor vs. piston

Cycle the key a few times to let pressure build up in the rail and you should be good to go.

how does the air bleed out of the fuel rails?

Jun 3, 2011 | 01:08 AM

Boosted3rdGen

Staging Lane

iTrader: (8)

Joined: Oct 2010

Posts: 79

Likes: 0

Quote:

Originally Posted by -M-

how does the air bleed out of the fuel rails?

there is a prime pulse when the key is turned to the ign on position, this prime pulse serves two purposes, one it builds fuels pressure in the rails, secondly it clears air from the rails by opening the injectors for a predetermined length of time. At least this is how I understand it.

Jun 3, 2011 | 01:08 AM

Boosted3rdGen

Staging Lane

iTrader: (8)

Joined: Oct 2010

Posts: 79

Likes: 0

Quote:

Originally Posted by -M-

how does the air bleed out of the fuel rails?

There is a prime pulse when the key is turned to the ign on position, this prime pulse serves two purposes, one it builds fuels pressure in the rails, secondly it clears air from the rails by opening the injectors for a predetermined length of time. At least this is how I understand it.