Quote:
Originally Posted by JohnM.
Interesting. I tried to pull apart a FD once, but the halves were rusted together I think. I love the mechanical simplicity.
So what do they do to rebuild these other than replacing o-rings/gasket?
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Flow test each port. The hex screws on the bottom are so each chamber flow can be adjusted individually so you can ensure equal fuel flow going to each injector. That is something I think is possible to DIY, but without a true flow bench, it's gonna take a lot of time and adjustment taking it on and off the car...
First step now though before that is to cross my fingers and hope I can get the 5.1bar pressure instead of the 2.3 before.
2.3 makes sense though....if the barrel was not aligned, there would be simply a buildup within the barrel and a leakage into the lower chamber, instead of the pressure going directly from the barrel to the lower chamber. Much more direct.
I was looking at the Porsche documents for rebuilds, but the difference is that the "metering hole" for them is between the two bases instead of the barrel like these. I think this is the reason for much confusion and mystery.
We will see this weekend. If this works, I'm taking apart my rust-clogged distributor to take a look at the micron filter in that one. I have a brand new CIS Flow Tech distributor ready to go, but I'd much rather put a donkey on first.