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Free minder
Join Date: Nov 2001
Location: Middlessex county, MA
Posts: 9,396
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What kind of induction do you have? With CIS, I think a check valve is necessary, because the whole system needs to be pressurized. I know when the check valve fails, no more warm start. My pump is not the high pressure model too, pretty much the same specs as the original Bosch.
I am glad to know there was no check valve in those pumps, this can be my issue.
Aurel
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