MFI Injectors
 

I have a 72 911T 2.4 MFI. It's running great but I'm chasing down the last few performance gremlins. I was experiencing a mixture problem in that it was easy to start and gradually ran rougher as it warmed up. I disassembled the thermostat and gave it a good cleaning and test. After reassembly, it's now rather hard to start but runs MUCH BETTER at temp.

As it stands now, I think I'm still a bit rich. I get the occasional exhaust backfire on deccelleration but nothing like before the cleaning of the thermostat.

So, going through the CMA,

1) Air cleaner cartridge - new
2) Compression loss - still chasing down a tester
3) Spark plugs (spark plug connectors) - new
4) Dwell angle - set
5) Ignition timing - set
6) Fuel pressure and flow - OK

I'm stuck on determining if my injectors are good. I can't seem to find used spares or anyplace that has the ability to test them. At $180 a pop, a new set is not an option. Anyone know of a place to get my injectors checked? Anyone have a few spares sitting around? 901-110-271-00-M14? Help?

From what I have read, and having mine tested by Gus at Pacific fuel injection is that they rarely go bad because they are mechanical. Call Gus and ship them to him.