BratRod Posted November 17, 2012 Share Posted November 17, 2012 So, my 85 brat has been sitting since September. Now the accelerator pump only drips fuel. Did the plunger dry out? Do I need to rebuild the carb? It idles smoothly and all the timing marks match up on the disty and flywheel. Get it anywhere near 1500rpm and it yells at me like its a timing issue. Is it the carb? Quote Link to comment Share on other sites More sharing options...
jonas Posted November 17, 2012 Share Posted November 17, 2012 So i'm assuming it ran fine till you parked it? Quote Link to comment Share on other sites More sharing options...
BratRod Posted November 17, 2012 Author Share Posted November 17, 2012 So i'm assuming it ran fine till you parked it? Till the ignition module crapped out, yes. Quote Link to comment Share on other sites More sharing options...
djellum Posted November 17, 2012 Share Posted November 17, 2012 might check the vacuum advance if it acts like a timing issue at slightly off throttle. Quote Link to comment Share on other sites More sharing options...
BratRod Posted November 17, 2012 Author Share Posted November 17, 2012 might check the vacuum advance if it acts like a timing issue at slightly off throttle. i had that thought and it does seem to be acting funny, how do I fix it? Quote Link to comment Share on other sites More sharing options...
jonas Posted November 18, 2012 Share Posted November 18, 2012 (edited) Check the vacuum lines. Sounds like a leak somewhere. I would seriously look at a Weber upgrade. Plenty of info here on it. No idea on how long you have let it run since restarting it but i would put a little fresh fuel in it and see if that smoothes it out, as well as a new cap and rotor (they are cheap), the basic tune-up stuff if you haven't already. Check your disty for wobble as well. Edited November 18, 2012 by jonas Quote Link to comment Share on other sites More sharing options...
BratRod Posted November 18, 2012 Author Share Posted November 18, 2012 (edited) Went through and checked all the vacuum lines. There were a few cracked ones and a few loose ones here and there. I played with the vacuum advancement a little and now I can just about hit 3k. I also am going to throw it some fresh gas and see how it likes that. And Jonas: new Cap, rotor button, and NGK plugs & wires. Ran for a day till the ignition module died. Edited November 18, 2012 by BratRod Quote Link to comment Share on other sites More sharing options...
jonas Posted November 18, 2012 Share Posted November 18, 2012 I have an '85 Brat as well. I'll show you mine if you show me yours...... Quote Link to comment Share on other sites More sharing options...
Gloyale Posted November 18, 2012 Share Posted November 18, 2012 Clogged Primary Main passage. Possibly other places too. First, Remove the drain bolts on the bottom of carb. Then, looking down the barrels you will see brass jet/emulsion tube. Sometimes you can clean them out with carb cleaner and compressed air without removing the top of carb. Otherwise, disconnect the return spring, choke link(tiny cotterpin), and accel pump linkage.....then unscrew the top, and fold it back. Take care to move the wiring around carefully out of it's clip, and not tear the wires. Then the emulsion tubes can be unscrewed, and thoughroughly cleaned out. 4 in total. Blow out the passages while they are out. COVER the accel pump barrel and weight to keep the plunger and ball from blowing out when you hit the emulsion passages. The carb does'nt need to come out to do this...and it takes care of 95% of the hitachi's driveablitly issues 99% of the time;) Dang......I really need to do a youtube video of this. Quote Link to comment Share on other sites More sharing options...
BratRod Posted November 19, 2012 Author Share Posted November 19, 2012 I have an '85 Brat as well. I'll show you mine if you show me yours...... Not much to look at... yet. but hey, no rust problems here Quote Link to comment Share on other sites More sharing options...
BratRod Posted November 19, 2012 Author Share Posted November 19, 2012 Dang......I really need to do a youtube video of this. sounds like it, lol Quote Link to comment Share on other sites More sharing options...
jonas Posted November 19, 2012 Share Posted November 19, 2012 Quote Link to comment Share on other sites More sharing options...
BratRod Posted November 26, 2012 Author Share Posted November 26, 2012 Its the timing advance... Not moving at all Quote Link to comment Share on other sites More sharing options...
88wacaroo Posted November 27, 2012 Share Posted November 27, 2012 Its the timing advance... Not moving at all You sort of need to start over here:confused: You parked it in Sep. 12 and started it now-Nov.12....you said it yelled at you at 1500 why did it get parked? Quote Link to comment Share on other sites More sharing options...
BratRod Posted November 27, 2012 Author Share Posted November 27, 2012 I was having electrical problems, a short here, ground problem there, then the ignition module died... Etc. http://www.ultimatesubaru.org/forum/showthread.php?t=136045 when I took the advance off and moved it manually I had no problems with reaching red line in a heart beat. Only problem now is I have to find a new timing advance Quote Link to comment Share on other sites More sharing options...
88wacaroo Posted November 27, 2012 Share Posted November 27, 2012 I was having electrical problems, a short here, ground problem there, then the ignition module died... Etc. http://www.ultimatesubaru.org/forum/showthread.php?t=136045 when I took the advance off and moved it manually I had no problems with reaching red line in a heart beat. Only problem now is I have to find a new timing advance Oh ok, Part shopping you go have fun! Quote Link to comment Share on other sites More sharing options...
djellum Posted November 27, 2012 Share Posted November 27, 2012 you wont find a vacuum can except maybe a junk yard (I got lucky and found a good one). there are places that rebuild them. no idea what is around your area, but look for a place that rebuilds or custom builds distributors. the cost at the local place was $25 to have it rebuilt. Quote Link to comment Share on other sites More sharing options...
BratRod Posted November 28, 2012 Author Share Posted November 28, 2012 you wont find a vacuum can except maybe a junk yard (I got lucky and found a good one). there are places that rebuild them. no idea what is around your area, but look for a place that rebuilds or custom builds distributors. the cost at the local place was $25 to have it rebuilt. I will look into that for sure. Thanks for the tip Quote Link to comment Share on other sites More sharing options...
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