Engine 850: B5202S/2.0/10v: - blocked vacuum pipe

donal · Mar 14th, 2008, 23:40

I used carb cleaner to unblock the small cream colour (vacuum?) pipe that runs between the air inlet nipple (which plugs into the throttle body/fresh air inlet hose) and the vacuum tree. It was badly blocked with carbonized oil deposits.

Yet, the car had been running reasonably well, albeit with poor engine braking especially in low gears.

Anyway, what is the function of this pipe? It goes between the fresh air inlet hose and the vacuum tree. ( a pic would be helpful so I'll see if I can get one)

Thanks in advance..

donal · Mar 14th, 2008, 23:44

its pipe no. 12 in this pic

stusT5 · Mar 16th, 2008, 10:28

item 8 is the flametrap it seems the pipe is a fresh air feed or vent for the trap

Mar 14th, 2008, 23:40	#1
donal Member Last Online: Jan 4th, 2013 12:56 Join Date: Sep 2006 Location: Athlone Town, Ireland	blocked vacuum pipe I used carb cleaner to unblock the small cream colour (vacuum?) pipe that runs between the air inlet nipple (which plugs into the throttle body/fresh air inlet hose) and the vacuum tree. It was badly blocked with carbonized oil deposits. Yet, the car had been running reasonably well, albeit with poor engine braking especially in low gears. *Anyway, what is the function of this pipe?* It goes between the fresh air inlet hose and the vacuum tree. ( a pic would be helpful so I'll see if I can get one) Thanks in advance.. __________________ 1995 850 estate; 2.0 126bhp; 161,000 miles

Mar 16th, 2008, 10:28	#3
stusT5 850 t5 and r owner Last Online: Aug 21st, 2014 07:28 Join Date: May 2007 Location: epsom View Photos By: stusT5	item 8 is the flametrap it seems the pipe is a fresh air feed or vent for the trap __________________ www.t5d5.org the no nonsense free speech performance volvo site

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