When  I first looked at this thread, Ben had suggested a procedure that involved a 10 or 20 minute (I forget which) warm up before doing the pressure test. If the engine already had a serious oil feed problem (as this one did with reversed filter) it would have been toast well before the warmup period. So yes, a pressure check is more accurate than an idiot light, but to run an engine for 10 minutes while the light is saying "no oil pressure" is just stupid.
I think the most interesting thing to come out of this discussion is that its just bad design to have a filter that can fit in backwards so readily. Bad Suzuki!

Quote from: the mole on August 21, 2011, 03:57:34 PM
I think the most interesting thing to come out of this discussion is that its just bad design to have a filter that can fit in backwards so readily. Bad Suzuki!

All the OEM oil filters I've purchased for my bike have been sealed on one end, making it impossible to insert incorrectly. (unless you cut a hole in it)

So I have to assume the oil filter was aftermarket.

Bought the filter at a Polo-shop nearby.

I guess it is this one, as the guy looked up the correct part number on the computer.

Some points to consider........

Running an engine that shows signs of low oil pressure is NOT a good idea, even if it is only for a few seconds. It should be avoided at all costs and seen as a last resort......... I don't need to say why. 

An oil and filter change done by the book WONT suddenly cause a drastic drop in oil pressure and therefore its reasonably safe to assume the problem is related to the work done while changing the oil and filter 

The light could be being triggered erroneously by an air locked switch, a faulty switch or faulty wiring. ALL of which can be checked and ruled out WITHOUT having to run the engine 

Ben quoted the first thing that came into his mind. There were other safer and easier options that he didn't consider that could have been taken first in an attempt to diagnose and rectify this problem without having to run the engine and risk compromising it.

People are free to form their own opinions but I maintain my earlier statement in that he doesn't think things through and often gives misleading, in this case potentialy dangerous advice.

Yes, that has been discussed to death and the points beaten like a dead horse. Let it go.

I've never seen anyone work so hard at CPR on a horse.