An internal combustion engine will run within a certain air / fuel mixture range, but will not run if the mixture varies beyond that range, either excessively rich or lean. Your car might be hard to start because it is too rich. By pressing the gas pedal, you provide additional air thereby leaning the mixture and coaxing an out-of-spec engine into running.
I just installed a rebuilt SPICA on my '76 Spider. While discussing some of the setup problems with Wes Ingram, he made a big point to "go back to the basics". That is, go back and do all of the recommended adjustments in order. I thought I had everything in order, but found the throttle butterflies were not closing completely, and were not correctly synchronized. These steps are early in the sequence, and nothing I tried later was completely sucessfull until I went back and corrected these two items.
The wire from under the injection pump to the FCS is from the microswitch. This cuts off fuel under closed throttle conditions, but the pump has this same function redundant as an internal feature. This wire is not the cause of your problem.
I'm sure many replies after this one will ask if you have Wes Ingram's SPICA manual. Do you?. If not, see http://www.alfaclub.org/techstff/tunespca.htm
until you get the manual.
Having said all of the above, gas in the oil may be the kiss of death for a SPICA pump. You need some expert advice. Are you an AROC member?. Wes Ingram is one of the Club tech advisors (on, guess what? SPICA!), and is available for consultation.
Good luck. Keep the BB informed with your progress.
Originally Posted by bjwhite
I have a 76 Alfetta GTV. I'm just now starting to go through the car and have been combing archives in search of Spica information...etc.
I strongly suspect that my car has a bad TA, but one thing sticks out in my mind as odd...
It is very hard to start, and mostly requires the pressing of the gas pedal to start. However, once started, it will idle and run but very, very rich. It's this rich running that makes me suspect the TA. But if it's set to rich, wouldn't it be easier to start, not harder?
The low fuel pressure warning light goes out as it should.
I am just now getting to check everything out...I know the fuel cutoff solenoid is disconnected electrically. (bad wire). There is also a wire which looks like it goes to just under the Spica injection pump that is fried/cut.
Anyone have any thoughts why a rich running car would be hard to start? My goal is to figure out the condition of the injection pump....yes it smells like gas in the oil, but when the car is started, it runs really rich...rich enough to foul the plugs. Thus gas in the oil can't be counted on to assess the pump condition.
Thanks in advance on any thoughts out there..