Looking for recommendations for experienced Mechanical Injection service in New Hampshire , Vermont, Massachusetts, Maine or anywhere else close by.
Thanks
Dennis
Printable View
Looking for recommendations for experienced Mechanical Injection service in New Hampshire , Vermont, Massachusetts, Maine or anywhere else close by.
Thanks
Dennis
Rick Cabell on this forum. Near Burlington, VT.
Also consider Automobile Associates in Canton, CT (west of Hartford). The last time I visited them (in July) their shop was heavily populated with MFI cars.
Alan
N.J.
What issues are you trying to resolve?
My main problem is a hesitation at very low throttle, like not enough fuel? Runs great when you open it up. This is a 1970 911E ,
The car was taken out of storage about 4 years ago. Prior to that is was an in-op for quite a while. New gas tank, fuel pump, throttle bodies cleaned and freed up . and all the typical other problems of a car that sat. It has been run for about 4,000 miles over the past 4 years. I have run probably 4 or 5 Techron treatments through it. It has had the same problem the whole time no better / no worse.
Have you checked your distributor advance mechanism.
Try a few tank fills with stabil.
A thousand miles a year is not much to keep everything loose in the injection pump.
I came across this information in a detailed description of MFI set up and adjustment:
"Even though the Bosch PE system is known for its response
and horsepower it is well known for its part throttle driveability surging."
This seems to be the exact symptom my car has. I also have a 1973 911 S but it does not have the partial throttle surging that the 1970 911E has. Was there an improvement with the 2.4 engine? I know the distributor has added vacuum advance ,. Anything else?
Well the 2.4 has more torque. The 2.2 really needs more revs to perform properly. You really can't lug either one.
Surging is different from hesitation.
MFI tends to run best rich. You'll see most people who are skilled in the art of MFI tuning disregard the CO readings that are mentioned in CMA and set things a bit richer. This is in large part to overcome the part throttle hesitation. YMMV (literally!).
But running though CMA systematically is essential before setting that final mixture ratio.
My MFI is set 1.5% higher on the CO number than recommended I believe. Runs flawlessly with no hesitation anywhere in the rev or throttle range.