fkacct

I know a bad brake booster can cause this, but what else can do this?

fkacct

J. Patterson

Sounds like it is bad. do brakes feel normal if stopping form a normal "in vacuum" situation? More evidence that boost is not being isolated from the booster. Sorry but I don't know where that check valve is without snooping around, but, it is there somewhere.

GorTT

for the brake booster. On the 180 it's right at the end of the "Y" hose; on the 225 I think it's at the passenger side firewall, where the line turns forward to parallel the charge pipe; look there first - and might be there's more than one.

fkacct

Yes, brakes feel normal when stopping normally (in vacuum or low boost)

fkacct

I've got a 225.....any pics of the check valve location ?

GorTT

to the pass side, then turns to the front to the end of the intake mani; the CV is located right at the turn to the front.

TTschwing

<center><img src="http://images7.fotki.com/v118/photos/7/7305/225766/hose225-vi.gif"></center><p>

fkacct

Thanks. What should the check valve do? Inhibit flow from manifold to #7?

GorTT

no, it keeps pressure from the manifold *in* the line, rather than allowing it to bleed off or drop.