Simple injector Drive

[Peter Wales]

Jonathan R. Luskywrites:

>Uhhhhhh, there is a reason why injectors have a minimum offtime and
>a maximum duty cycle.  You put a constant 12V on a Rochestor injector
>and it will get *HOT*, and melt the windings, even with fuel flowing
>through them.  I toasted a nice 33lb/hr MSD injector this way...

Now that does surprise me. 3/4 amp and 12v with 33lb/hr of cooling fuel
going through it and it burnt out? So how does an injector survive being on
top of an engine at 100 degrees and running near 100% duty cycles? Has
anyone else destroyed injectors by running them continuously. 

When I was doing flow testing on Bosch and Mitsubishi injectors, we just put
12 v across them, with the ballast resistor in series, and ran them, no
problems.

Maybe I had better not try that with new injectors.

Peter