| View previous topic :: View next topic |
| Author |
Message |
ggrecian
Joined: 20 Oct 2013
Posts: 29
Location: Pa
|
 Posted: Sat Dec 21, 2013 3:47 am Post subject: 1987 924s fuel pressure |
 |
|
how many psi does it take at the fuel rail to open up the injectors WHILE CRANKING on a 1987 924s?
_________________
porschelover |
|
| Back to top |
|
 |
fiat22turbo
Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR
|
| Posted: Sat Dec 21, 2013 4:34 am Post subject: |
|
|
They are electrically activated. They open when the computer tells them to. The amount of pressure at the injector has little to do with their opening.
You need to ignore the 924 portion of your car's name when diagnosing as it is essentially an 83 944 in all but external looks. So it has Electronic fuel injection, not CIS (mechanical fuel injection).
So the operating pressure at the regulator with the engine not running is 36psi and it should drop to 29psi at idle (due to the vacuum working on the pressure regulator)
Refer to this section along with a Hayne's manual for the 944 for information on how to repair and troubleshoot your car.
http://clarks-garage.com/shop-manual/repair-procedure-index4.htm
http://www.haynes.com/products/productID/459
Along with the Factory Service Manual.
http://www.ebay.com/bhp/porsche-944-repair-manual
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
924 FAQ (Technical)
