WHY DIDN´T THEY STOP DRIVING? N43 WITH LEAKING INJECTORS CATASTROPHE!

This N43 had an issue with leaking injectors that I think may have caused the timing to go
Pete Tong. Either way it needs a whole new chain drive and a set of injectors.
I scoped the cam and crank signals and compared with a B38 as I do not have an N43 scope trace from a known good vehicle however the B series timing looks very similar.
The crank was 5 Degrees off from the cam timing - the whole job is a bit of a mess and we caught this just in time as the injector in number 2 was pouring fuel in for some time with the key removed from the car - a real bad leak.
The hope is in 2 weeks I will have replaced everything and in part 2 we will look at the scope trace again and compare with this one in this video and see the differences. The aim is to have a library of scope traces that will enable me to perform timing diagnoses without removing the valve covers.
#bmwmechanic #n43 #e90 #e91#mechanic


Intro

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00:00 Introduction
00:39 White smoke followed by black smoke - excess fuel
00:56 Stripping the cam cover off the old N43
01:25 Phase wheels line up but is the timing correct?
02:01 Checking the Vanos wheels are locked
02:48 The intake camshaft is not lined up - the timing is out
03:44 The crankshaft locking hole is not in the correct position
04:56 Looking at the scope trace and comparing with a B38
06:22 Checking how many degrees the cam timing is off from the crank timing
06:51 Crank now at TDC but the cam phase wheels are miles off
07:09 Injector leaks on 1 and 2.
07:44 Fault codes