JLDT Posted May 28, 2005 Share Posted May 28, 2005 So I have my Subaru back together and it runs . . . sort of. Initally it seemed ok, but the it lost power, and it doesn't respond when you step on it right away. Now, before you go an suggest a tune up. Last night I replace the plugs, wires, rotor cap and timing belts (I had them open and they had been covered with oil). This morning I replace the fuel filter and actaully put on the warm air return to the intake for the first time since I owned the car. Onto the problem. I checked all the vacuum lines and they seem to be connected correctly, but the diagram under the hood can be somwhat tricky to read. In looking at the carb, I think that it is a hitachi ?? (not sure) but there is sor of a halp and half split, front to back, then the back one has a choke like plate that is supposed to be moved by a vacuum powered valve. Sorry a don't know the correct name for it, but anyway, that choke doesn't seem to be opening for anything. we can open it by hand, and that seems to fix the problems, but it doesn't work on it's own. Any Ideas on other things to check or if it is the carb or that valve of the vacuuum to that valve would be great. I am beginning to get irratated with this mess. Thanks all. ~J PS. I am not sure what all it says in my sig, but 86, D/R manual, 1.8 OHC, carbed, hmm I think that is all that might be useful. Link to comment Share on other sites More sharing options...
erik litchy Posted May 28, 2005 Share Posted May 28, 2005 yeah, the choke should open. it should barely run with it closed and the engine is warm. you shouldnt have too mutch trouble tracing the lines that run from the choke? Link to comment Share on other sites More sharing options...
JLDT Posted May 28, 2005 Author Share Posted May 28, 2005 more info It is a hitachi feedback carb, and the problem is with the secondary throttle. This car has been sitting for about a year, but when I parked it, it worked. It appears that the primary throttle causes the secondary to open slighly at 60 degrees like haynes says it is supposed to, but then the secondary doesn't open up like you would expect. The secondary seems to be run using a vacuum that runs off a small vacue size hose that goes from the upper left of the carb to this pump (for lack of a better term) If we reach in under that pump and manually manipulate the throttle there, the car seems fine and the throttle in the car causes normal operation. However, because I cannot keep someone under the hood all the time while I am driving around to hold that open, I am going to need to find out how it works and how to fix it. Any information would be appreciated on these carbs and how they are supposed to function. I also tried blowing air in from vacuum pump that is on the secondary throttle to the carb and it seems to be blocked, and there also doesn't seem to be a whole lot of vacuum on that line when I have the car running, but I don't know if that is normal. I should stop rambling, but hopefully this is enough information for someone to know what I am talking about. ~J Link to comment Share on other sites More sharing options...
JLDT Posted May 29, 2005 Author Share Posted May 29, 2005 bump - sorry i really want to get this fixed Link to comment Share on other sites More sharing options...
pyromanic Posted May 30, 2005 Share Posted May 30, 2005 Free bump dude. My carb still works, but for how long? Link to comment Share on other sites More sharing options...
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