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psalt psalt is offline
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Join Date: Mar 2006
Posts: 1,107
It's a '79 so no Lambda. Any suggested changes to the test method? Which chart are you talking about?

Dr J,

There is more to fuel delivery at the injectors than height of the plunger. There is a differential pressure valve after the plunger slit and before the injector line. If your test method plumbing effects the pressure in the lower chamber, the amount of fuel at the injector will be different. My point about CIS lambda is that it controls the amount of fuel at the injector by varying this pressure with the FV pulses. The range of the delivery amount is quite large. If the lower chamber pressure is higher in your test than under running conditions, delivery at the injector will be lower. Have you tried the test with all the fuel lines hooked up normally and no test valve ?
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Paul
Old 01-20-2010, 04:31 AM
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