Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 Engine Rebuilding Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered
 
Join Date: Feb 2016
Location: Gothenburg - Sweden
Posts: 474
Fuel priming on 71T first startup

Hi All, I'm about to start up my engine for the first time. I have Wayne's book and are familiar with the important steps before startup.

My question is, due to the fact that I have a new fuel tank, fuel hoses, filter etc the system is completely empty. I have restored the carbs as well. The fuel pump is a restored original.

Should I prime the fuel system first before I turn the starter. I assume the fuel pump kicks in on the first or second step on the ignition and then fills up the carburetor bowls. Correct?

Is there a better way to do this other than to pour some fuel into the throats and turn on the starter?

Appreciate all input.

All the best,
Jörgen Forssling
Gothenburg
SWEDEN

Old 05-10-2021, 02:32 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Try not, Do or Do not
 
Henry Schmidt's Avatar
 
Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
Posts: 14,054
Garage
Only thing I would suggest is disconnecting the fuel lines at the carburetors so you can clear the lines while measuring fuel delivery. Turn on the key and watch for debris and flow.
500-700cc per minute ?
__________________
Henry Schmidt
SUPERTEC PERFORMANCE
Ph: 760-728-3062
Email: supertec1@earthlink.net
Old 05-10-2021, 07:17 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered
 
Join Date: Feb 2016
Location: Gothenburg - Sweden
Posts: 474
Thanks for your input Henry. I have had the pump rebuilt and tested so I know it is up to spec.

KR,
Jörgen
Old 05-10-2021, 07:25 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
It's a 914 ...
 
stownsen914's Avatar
 
Join Date: Jan 2008
Location: Ossining, NY
Posts: 4,703
Key on should allow the fuel pump to run (you'll hear it). Assuming the pump is doing its thing, 10-20 seconds should be plenty to get fuel to the carbs.

Especially if you've had the fuel system apart, I'd do the above, and stop and inspect for leaks before starting the engine.
Old 05-10-2021, 05:05 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered
 
Join Date: Feb 2016
Location: Gothenburg - Sweden
Posts: 474
Quote:
Originally Posted by stownsen914 View Post
Key on should allow the fuel pump to run (you'll hear it). Assuming the pump is doing its thing, 10-20 seconds should be plenty to get fuel to the carbs.

Especially if you've had the fuel system apart, I'd do the above, and stop and inspect for leaks before starting the engine.
Thanks, that's what I was thinking.

//Jörgen
Old 05-10-2021, 10:14 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered
 
Join Date: May 2016
Posts: 99
Garage
It's really important to have fuel in the float bowls before you attempt to fire it up, a single backfire can crush the floats :-( Dont ask how i know
Old 05-11-2021, 12:58 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered
 
Join Date: Feb 2002
Location: Sunny Phoenix, AZ
Posts: 1,068
Garage
Once the fuel pump is running watch the carbs to ensure the floats work/don’t stick. Look for any fuel seepage or overflow. If all is well then attempt to start.

Good practice anytime you let the car sit for weeks between drives as well.
__________________
Brian Miller - Scottsdale, AZ
1971 Porsche 911 T Targa @targatuesday :: 2005 Ducati Monster S2R :: 2008 Porsche Cayman S
Old 05-11-2021, 04:22 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered
 
Join Date: Feb 2016
Location: Gothenburg - Sweden
Posts: 474
Thanks for your input. I have restored the carbs and set the float level. I will check the float bowls before I attempt the first start.

//Jörgen

Old 05-11-2021, 10:59 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Reply


 


All times are GMT -8. The time now is 08:31 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.