I noticed my egr valve was pinging again, so I decided to check the parts catalog to get a price check. That's when I noticed I was missing quite a bit of my vacuum system.
When I first bought the car the air pump was busted and I had a dirty egr valve. Also one of the hoses was busted and not connected. I put two and two together and just connected a new hose where I thought it would go, directly to the engine. Hose 9 in that case would go straight to where hose 1 would be skipping parts 2-8.
Is this just a fault in the diagram am I really missing parts parts 2-8? My 318ti is 1997. I mean how could the previous owner lose that much? Also, could this be the reason why my egr valve keeps getting stuck and my fuel economy is bad?
Here's what is described in the diagram I just copied and pasted from the parts site.
No. Description Supplement Qty From Up To Part Number Price Notes Photo
01 Hose 470MM 1 11731435862 $27.44 +core
02 T-CONNECTOR 1 11721439973 $1.07
03 VACUUM HOSE BLACK 3,5X1,8 1 11727545323 $14.82
03 VACUUM HOSE BLACK 3,3X1,75 1 51731257971 ENDED
03 VACUUM HOSE BLACK 3,3X1,8 1 11747797175 ENDED
04 non-return valve 1 11611312737 $17.70
05 VACUUM HOSE WHITE 3,3X7 1 51731259951 ENDED
05 VACUUM HOSE WHITE 3,3X1,8 1 11747797177 $17.14
06 Rubber Mounting 1 13411705564 $2.40 +core
07 CONTAINER 1 11611312762 $7.60
08 Bracket, vacuum reservoir TLEV 1 11731433822 $5.84
09 VACUUM HOSE WHITE 3,3X7 1 51731259951 ENDED
09 VACUUM HOSE WHITE 3,3X1,8 1 11747797177 $17.14
Missing Vacuum hoses? 
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