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ever see that problem where the FI screen at the injector gets partially clogged
you pull the injector off and tap the hose end on the ground and all kinds of junk comes out
75 FI and can be a screwy beast every thing from cracked sprint header(did i mention the sprint headers crack sometimes) to the wiring to the fuel pump, to thermo time switch, to fuel lines closing off when getting warm
also bad ECU's cause problems not to mention fuel filters and dual relays
the starter has been know to cause 75 FI problems
if you can get a hold of a Glen's repair manual for the Opel it has a real good TS section on the 75 FI
also How to tune & Modify Bosch FI by Ben Watson is real good
speaking of Carlisle i was watching a Video from Opels Unlimited about a month ago where this Guy Todd goes to Carlisle and fixes all finds of Opel problems
i am talking some weird ShxT
as i was watching i sat there thinking you can avoid a lot of weird problems by not running the car forever on old parts what i mean is people try to get 2 years out of a set of spark plugs or points or have 5 year old spark plug wires never change there fuel filter the coil is 30 years old
Sportwagon75 i know you know all this anyone that's had 75 FI has to be able to Troubleshoot i am just saying this for other peoples benefit
i solved a lot of my 75 FI problems with new injectors
there was one problem where the guts of the Aux air valve would blow out the back of the Aux air valve (elect part)
the biggest weirdest 75 FI problem has to do with power to the FI pump
you will see a lot of 75 cars with a new 12v wire running straight to the fuel pump (people would give up trying to figure out why the have 12v at the fuse and no power at the pump and just run a new wire)
anyway your at the point where you start replacing parts.
good luck
Davegt27
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