How to Clean/BackFlush CIS Fuel Injectors for a Porsche 911S! Projekt Airkult Episode 25

In this episode, I try to backflush some CIS fuel injectors from my 77 Porshce 911 to clean any deposits on the microscreens, and test the spray pattern afterwords. I've recorded the spray patterns at 240fps in order to analyze how well the cleaning worked. I also show you how to stack in the injector inserts on the intake runners.

I was following this thread:
http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/950491-cis-injector-cleaning.html

CIS stands for Continuous Injection System, and unlike modern EFI where the injectors pulse a mist of fuel at a specific time, this system just sort of mists fuel constantly into the intake runners, so the fuel vapor builds up on top of the intake valve, and gets sucked in on the intake stroke.

My system was functioning properly, so my goal was to document the CIS system, tear it down to inspect everything, and slap it back together. I also modified the intake runners by removing some extra bosses and mounting flanges, which should clean up appearance and help shed a tiny, insignificant amount of weight (I weighed it, 5 ounces!! lol).

Links:

Initial Teardown:
https://www.youtube.com/watch?v=4Oh2pmyp0Gs
Airbox Inspection:
https://www.youtube.com/watch?v=QC2GBB7nYBw
Reassembly of CIS system:
https://www.youtube.com/watch?v=LNHasTH92Bg

Best Source of CIS Info on the Internet:
http://jimsbasementworkshop.com/CIS/CIShome.html

New Injectors:
https://amzn.to/3gZwCHv

LiquiMoly Diesel Purge:
https://amzn.to/3abjBsF

Injector O Rings:
https://amzn.to/3gNaU9c

The BEST Engine Rebuilding Book for 911s
https://amzn.to/32TDLmG

The BEST 911 Projects Book for 911s
https://amzn.to/3nwSkEC

The BEST source for information on 911 technical questions:

http://forums.pelicanparts.com/porsch...

IG@ADDvanced

BEATS:
Dreams- Joakim Karude: https://www.youtube.com/watch?v=tjUx4M332H8
Music by HoobeZ- https://youtu.be/O6nMNPQ4Vf0
#porscheCIS #cisfuelinjection #cleanCISinjectors

Видео How to Clean/BackFlush CIS Fuel Injectors for a Porsche 911S! Projekt Airkult Episode 25 канала ADDvanced