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 > Porsche 911 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Senior Member
 
Zendalar's Avatar
 
Join Date: Apr 2001
Location: Finland
Posts: 1,214
Weirdest problem...cdi+carbs

Some people might remember that my CDI box started to give me trouble. Well I fixed it and it works and whines allright..but...

Fuel pump now pumps the gas straight through the carbs..and the excess fuel comes out somewhere near the intake manifold and carb joint. Seems that it comes through the gaskets, but why? These hold air (new gaskets) but not gas..besides there is no pressure there.

The weird thing comes here..when I detach the CDI unit, the hissing sound is gone..fuel pump still pumps, but it does not come through the gaskets (or whereever its coming from). The CDI unit detached the fuel pump pumps slowly.

What on earth is going on? I suspect the float valves, but why the floats hold the gas when the CDI is not connected.

These problems started after the car stood 2 weeks still, undriven.

I am soon gonna start thinking that the engine needs couple ventilation holes, which I could drill with my 357 Magnum

__________________
Projects:
911 -72T EFI "964-look" "Smoky"
914 -71 1.7 D-JET "Rusty"
Old 06-17-2002, 08:16 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
I would rather be driving
 
jpnovak's Avatar
 
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
Could it be caused by sticking float needle valves? I wonder if you bumped the carb while disconnecting your CDI. this could cause a stuck float or float valve to release.

I would pull the tops of your carbs and clean/inspect the floats and valves. Check the float levels while you are at it. Wayne's book has a good description on how to do this.

Jamie

__________________
Jamie - I can explain it to you. But I can not understand it for you.
71 911T SWT - Sun and Fun Mobile
72 911T project car. "Minne" - A tangy version of tangerine #projectminne
classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks
Old 06-17-2002, 09:33 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Reply


 


All times are GMT -8. The time now is 11:42 AM.


 
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.