nipper Posted April 4, 2012 Share Posted April 4, 2012 I am going to hang my head in shame here say HELP @!##$*&^&%%$###@ thing. i am deciding where i am having a run of bad luck as opposed to being inept, but hey, I am not perfect. Car - 1989 Justy CVT 30,000 miles Mechanically fine, trust me on this one. Fuel system, new pump, two filters, one at tank one at carb. History: Car sat for years. 1st carb basically had things growing in it, sent it out to be rebuilt. Crap rebuild, wasnt much better, parts were missing. Oddly others have had this issue on rebuilds. missing vent solenid piston 2nd carb, used, from an 88. Swapped the mix solenoid from the 89 as they were different connectors for some reason. Car ran much better, smoth as silk once fired up, rough idle, only abou100 rpm if lucky, usually it liked 1800. No cold start issues, no hot start issues. Vent solenoid piston seal shot Car was driveable Built a (read jerryrigged) a replacement exhaust, with a modern cat Fine. Shut it down for three weeks to go back and change my internal wiring, install cruise control, install mechanical gauge and new gauge pod. Sealed off the airpup inlet and still using the factory front cat. Fine All excited, cleaning up, goping to get reggy and tires... Start up .... $@#^%$! Car runs really smooth for ten seconds then dies. Put gas in car (nine gallon tank could be out). Car runs like crap. Sounds like it is running on one or two cylinders. Have to keep pumping the gas slowly to keep the engine running. The car coughs and spits through the carb when it stalls. Disconnect and plug the evap purge line to carb no help. I know timing is good because it runs well for a few seconds nice and smooth. no loose vac lines. My feeling is that this used carb that had been sitting loosened internal dirt and now it is all clogged. Carb 2.5 or three I have yet to decide. I am looking at subaru factory rebuilds (came down in price). I just can't tell what they are by thier descriptions, so waiting for an email. Otherwise another rebuild ... to find a rebuilder trustworthy. Link to comment Share on other sites More sharing options...
Dirk Posted April 4, 2012 Share Posted April 4, 2012 Maybe just need to clean jets again. Or if you are feeling lazy/lucky compressed air down any/all orifice. Link to comment Share on other sites More sharing options...
robm Posted April 4, 2012 Share Posted April 4, 2012 Rebuild it yourself? That way you know it is right. I wonder if a big part of the problem is not being able to get parts. The rebuilders can't do a good job, if there are no parts. (But then they shouldn't try, or let you know, or at least reuse the old one, not leave it out!) Carbs are dinosaur technology, like a lot of things that used to be common as dirt. I have a hard time finding tires for my Loyale, and I won't even try to talk about how hard it is to find new parts for my bicycle! Link to comment Share on other sites More sharing options...
nipper Posted April 4, 2012 Author Share Posted April 4, 2012 Rebuild kits abound, as do floats. Even mix solenoids, but the vent piston itself is not. The first carb was original and they lost the piston and who knows what else. Link to comment Share on other sites More sharing options...
ferox Posted April 4, 2012 Share Posted April 4, 2012 I think the Justy Hitachis have way too much going on. I have a spare for my '88 and a rebuild kit and I think I am just going to sell them. Too many parts to fail or go sub-optimal. I plan on going with Megasquirt once I get the car put back together this summer, but if I don't do that I am going to go with a Weber. For the price of a rebuild done by anyone other than yourself you can by a new Weber kit. With the Weber I think you would probably get a couple mpgs less in the beginning compared to a stock carb, but in the long run the relative simplicity of the Weber would give you consistent mileage. The mpgs tank on the Justys once the stock carb gets a little worn out. Plus the Weber will give a little more pep. Link to comment Share on other sites More sharing options...
nipper Posted April 5, 2012 Author Share Posted April 5, 2012 I cant do a weber. This is a cvt and has a cable on the other side of the carb for the CVT throttle input. How are you doing megasquirt, a 3cyl fuel injection or TBI kind of thing. I've looked into megasquirt but it is way too much money and work and I would like the Justy on the road yesterday. I have seen more complicated carbs, I just don't have the workspace to do it properly. Link to comment Share on other sites More sharing options...
ferox Posted April 5, 2012 Share Posted April 5, 2012 I cant do a weber. This is a cvt and has a cable on the other side of the carb for the CVT throttle input. Ah I see. How are you doing megasquirt, a 3cyl fuel injection or TBI kind of thing. TBI. My plan was/is to try to do the simplest TBI set-up to replace the carb without swapping heads, intake, and exhaust manifolds and do a write up. The thought being to help other Justy owners keep their carbed Justys on the road with the cheapest and easiest FI carb replacement. I've looked into megasquirt but it is way too much money and work and I would like the Justy on the road yesterday. In that case I would try to make sure you know it's the carb and go for the Subaru reman. Last time I looked at them they were probably the same $ or more than a simple megasquirt set-up, but it'll bolt on and go. Link to comment Share on other sites More sharing options...
nipper Posted April 5, 2012 Author Share Posted April 5, 2012 Ah the megasquirts i have seen on the justy board has been full blown FI conversions. I wonder if you can just bolt on a TBI fomr a sooby and all the needed electrics. I would like to see the TBI conversion, for that I would be interested. I talked with 1st subaru who had a 360, he said subaru carbs aren't available anymore and he is going to ask around to find me a good rebuilder. Link to comment Share on other sites More sharing options...
ferox Posted April 5, 2012 Share Posted April 5, 2012 Ah the megasquirts i have seen on the justy board has been full blown FI conversions. I wonder if you can just bolt on a TBI fomr a sooby and all the needed electrics. I would like to see the TBI conversion, for that I would be interested. I plan on trying to adapt an ea82 SPFI throttle body and see if the injector will work. If it's too big I will probably look for an injector from a Nissan or other Subaru. I know the SPFI TB has a different footprint than the carb, but the Justy shares the ea82 carb footprint so it's hopefully not too much of a stretch to build an adapter. I don't know of any factory 3 cylinder TBI platforms or I would try a full JY TBI build, so I plan on using the Megasquirt for management and an external aftermarket fuel pump. I think with a trigger wheel I can even keep the stock ignition system. I would really rather upgrade a bit, but I am challenging myself to do the conversion with the least amount of system and parts replacement. If I don't like it I can upgrade later. I talked with 1st subaru who had a 360, he said subaru carbs aren't available anymore and he is going to ask around to find me a good rebuilder. That's too bad. Hopefully they can find you someone good. Link to comment Share on other sites More sharing options...
987687 Posted April 5, 2012 Share Posted April 5, 2012 Didn't the later model justys have fuel injection? Link to comment Share on other sites More sharing options...
nipper Posted April 5, 2012 Author Share Posted April 5, 2012 1989 Justy was the last carberated car in the US, after that they went to FI. Link to comment Share on other sites More sharing options...
987687 Posted April 5, 2012 Share Posted April 5, 2012 So can't you do a fuel injection swap like you can with the ea82? Link to comment Share on other sites More sharing options...
nipper Posted April 5, 2012 Author Share Posted April 5, 2012 So can't you do a fuel injection swap like you can with the ea82? No its rather complicated from what i see on the justy board, but no one has done an tbi swap. I dont see why that would be too hard. An ideal FI swap on a justy seems to go out and buy a FI justy, put your licese plates on it, and you converted it. Link to comment Share on other sites More sharing options...
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