Filter:
Replacing the MFI Fuel Filter from Porsche 911T/E/S Model '73 Driver's Manual page 62. Posted in
Ultimate MFI Resources Thread.
Post # 5.
1973 MFI Electric Fuel Pump questions.
Importance of cleaning the filter screen located as part of the outlet fitting from the fuel tank (Post # 12).
Fuel Lines:
Braided Fuel Hose for a 72T MFI.
The correct fuel lines and replacement methods for MFI systems.
Fuel pump:
Adjustments to the MFI pump for timing and mixture by Leslie Rice. Includes advice on making adjustments to the MFI pump, timing the MFI pump and inspecting the MFI timing belt. Also describes useful tools.
MFI Open Heart Surgery II - The Fuel Pump.
Thread detailing rebuilding the very expensive MFI fuel pump. Great pictures.
BOSCH 2.4 MFI Fuel Pump.
Fuel pump specs.
Help with MFI symptom.
Measuring proper fuel pressure and why it's important.
Clogged Fuel Pump/Pickup:
MFI / CMA revisited ... The fuel tank should be drained and removed [remove the fine bronze filter screen at the outlet fitting] ... and cleaned & sealed with a slosh/seal product such as what is commonly used for light aircraft fuel tanks. Blow out the fuel line in the tunnel with compressed air ... to see if any rust particles are still clogging the fuel flow! Replacement of the line may be necessary to achieve the specified fuel output of 900 cc - 1000 cc in 30 seconds!
1973 MFI Electric Fuel Pump questions.
Importance of cleaning the filter screen located as part of the outlet fitting from the fuel tank (Post # 12).
General Information:
MFI simplification thread.
Overview of each of the parts of the MFI system.
Autosolve Mechanical Fuel Injection article.
Really deals with the Bosch K-Jetronic system but still a pretty good read.
Excellence Magazine technical notes II, pages 60-66.
John Cramer's MFI/CMA mnemonic aid. Posted in
Ultimate MFI Resources Thread.
Post # 24.
Mechanical Fuel Injection 101 by Grady Clay. Wonderful foundation for new MFI owners and as a reminder for those more experienced with MFI. Posted in
Ultimate MFI Resources Thread.
Post # 26.
MFI Message Board Index.
Project 30, page 91, Mechanical Fuel Injection Troubleshooting and Adjustment,
101 Projects for your Porsche 911
The Bosch Mechanical Fuel Injection Compilation by
John Hunt.
Ultimate MFI Resources Thread.
Up-Fixin der Porsche has various somewhat helpful bits on Mechanical Fuel Injection at:
"Mechanical Fuel Injection" in Volume 5, page 146.
Compares MFI to CIS and carburetors.
"Mechanical Injection" in Volume 6, page 31.
Short discussion of gas in oil problem with some MFI systems.
Hot start issues:
Understanding and dialing-in the system for the first time.
Detailed thread about setting up and troubleshooting an MFI system. Also discusses Hot Start issues.
Idle:
Adjusting MFI Engine Idle, Factory Workshop Manual, 1972 Supplement, volume 2, pages 3.1 1/2 - 3.1 1/3. Posted in
Ultimate MFI Resources Thread.
MFI idle on max, still lean on idle? Setting MFI idle, rich/lean running, importance of working thermostat.
Induction Chart:
MFI Induction Chart. Dimensions of the various MFI setups.
Injection Pump:
MFI Pump Dyno build- My newest project.
Terrific thread with great pictures showing a homemade MFI pump dyno.
MFI Pump - Open Heart Surgery. Thread with great pictures showing the internal components of the MFI pump.
Adjustment of the internal partial load adjustment screws
Very technical MFI question.....
Discussing the internal makeup of the MFI pump.
MFI Pump - removal, rebuild & re-fit.
Nice guide to replacing an injection pump including timing the pump with great pictures. From a UK web site
Maintenance:
Fuel Injector Maintenance. How to maintain mechanical fuel injector.
Message Boards:
EARLY 911S REGISTRY has a good message board (not as good as Pelican). (
I can't link directly to the web forums from here for some reason) Become a member to search for advice from other MFI owners.
PELICAN PARTS 911 TECHNICAL FORUM. The best 911 message board on the net!
PORSCHE CLUB OF AMERICA MFI TECH QUESTIONS. Put MFI related search terms (keywords) into the search box for advise from other MFI owners.
RENLIST TECH FORUM. Choose "web forums" from the first page and then 911 forums. (
I can't link directly to the web forums from here for some reason) Become a member to search for advice from other MFI owners.
DDK - Die Deutschen Klassiker, 911 Technical Archive.
"The 'Maverick' Porsche Club for Classic Porsche 356, Porsche 911, Porsche 912, Porsche 914 & Replica Fans"
Australian Typ 901 Register.
General & technical discussion topics about early 911s.
6speedonline.com Forums.
911 1964- to current Porsche 911, from the air-cooled days to the current 997.
Micro switch:
Adjusting MFI Micro Switch - Beginning with 1972 Models,
Factory Workshop Manual, 1972 Supplement, volume 2, page 3.1 1/4. Posted in
Ultimate MFI Resources Thread.
Post # 17.