Fresh seafoam. now cant boost.
Posted: Tue Apr 10, 2012 9:24 pm
Started driving the Subi again. Got tired of rolling up to the stoplights and having the engine die. (suspect IAC is dirty). Had a partial can of Seafoam left over from working in the project car.
Couldn't remember what vacuum line I was supposed to use, so I tried various hoses. The one that I found that had a decent amount of vacuum lead to a nipple on a single runner of the intake manifold, and thus, missed the throttle body, IAC, and to my mind would only provide seafoam to one cylinder.
anyways. I put a bit through the vacuum hose on the manifold. Tried a couple hoses on the silencer delete (coffee cup mod) and ended up pouring some into the return line of the BPV. When I had the engine running with the BPV return line off I noticed a fair amount of air from the BPV and the engine ran like crap unless I blocked it off. I'm guessing my BPV is bad.
So. I ran out of seafoam to experiment with (never did get to fog out the neighborhood) let the car idle a couple minutes and took her for a test run. I seem to have solved the "engine dies rolling up to stoplights" issue. But now if I get into boost more than... 3-5 pounds the engine completely dies until I let off the throttle or engine RPMs drop. There is no Stutter or backfire. If I jsut stay on the throttle Then I get about 1 second of accell, one second of dead engine, rinse, repeat.
ANYONE have any ideas? Im hoping the seafoam has stuck something shut and the issue will resolve itself as the seafoam gets drawn through the engine.
Couldn't remember what vacuum line I was supposed to use, so I tried various hoses. The one that I found that had a decent amount of vacuum lead to a nipple on a single runner of the intake manifold, and thus, missed the throttle body, IAC, and to my mind would only provide seafoam to one cylinder.
anyways. I put a bit through the vacuum hose on the manifold. Tried a couple hoses on the silencer delete (coffee cup mod) and ended up pouring some into the return line of the BPV. When I had the engine running with the BPV return line off I noticed a fair amount of air from the BPV and the engine ran like crap unless I blocked it off. I'm guessing my BPV is bad.
So. I ran out of seafoam to experiment with (never did get to fog out the neighborhood) let the car idle a couple minutes and took her for a test run. I seem to have solved the "engine dies rolling up to stoplights" issue. But now if I get into boost more than... 3-5 pounds the engine completely dies until I let off the throttle or engine RPMs drop. There is no Stutter or backfire. If I jsut stay on the throttle Then I get about 1 second of accell, one second of dead engine, rinse, repeat.
ANYONE have any ideas? Im hoping the seafoam has stuck something shut and the issue will resolve itself as the seafoam gets drawn through the engine.