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Okay, this morning I replaced the filter. Everything's back together, no sign of any leaks. It was not a bad job at all.
A few differences I ran into on my 1993 945 vs the FAQ. Whether this is a Regina vs Bosch issue or a 1980's vs 1990's issue, I don't know.
-The banjo bolt on the front is 17MM, different from either end of the Bosch, and there is no banjo bolt on the rear.
-The cradle on my car was held up with 13mm nuts, not 10mm.
-The bolt for the clamp holding the filter to the cradle was 10mm.
-you only need one of the larger pair of washers for the rear fitting. The washer goes between the brass fitting and the filter, then the coupling attached to the fuel line goes onto the fitting plain. It has some sort of rubber nipple down inside it to give the seal.
The installation procedure I used:
-install brass fitting into rear of filter, using 27MM wrench as counterhold on the filter.
-under the car, assemble the banjo bolt/fuel line/2 washer setup, then carefully thread it into the front of the filter.
-Be sure the fitting is aligned so that it won't hit or rub stuff BEFORE tightening down the banjo bolt (use the 22mm wrench to counterhold the filter)
Thread the rear fuel line coupling onto the brass fitting previously installed onto the rear of the filter. Use a 19MM wrench as counterhold on the brass fitting while you tighten down the fuel line connection.
-reinstall the clamp bolt and tighten the filter into the cradle
reinstall the 13mm nut to secure the cradle, and tighten it down.
-clean up tools, put the car on the ground, reconnect any electrical things undone at the beginning, and start the car. I cranked mine for 5 seconds to bring the pressure back up, then it started on the second try. Check for leaks.
Not a bad use of my morning. Will be curious to see if this makes any difference with my knock sensor issue (it rained yesterday evening, so I did not get to play with the multimeter per Tom's suggestion).
john
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