Welcome to Ultimate Subaru Message Board, my lurker friend!
|Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.
We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!
Serving the Subaru Community since May 18th, 1998!
Random dying problem is back :( Maybe carb??
Posted 10 January 2004 - 07:17 PM
I believe this might be a carburator related problem. Would a sticking float cause something like this? I think its time to give up on this Hitachi and just get a weber.
P.S. This is on the '84 Wagon, EA81, 2bbl hitachi.
Posted 10 January 2004 - 10:26 PM
Just busting your balls.
Posted 10 January 2004 - 10:33 PM
*slaps his wrists* wont happen again.
Posted 10 January 2004 - 10:47 PM
The needle valve is what shuts off the fuel supply to the carb when the fuel level rises and causes the float to push the needle valve onto it's seat.
I have seen needle valves literally wedged into the seat. You don't get any fuel flow when that happens.
Other things that come to mind are,
plugged or restricted tank vent lines; try running with the gas cap loose or off to check that.
fuel pump going south on you; it may still be pumping fuel, but how much fuel is it pumping is the question.
pick-up tube in the tank; there's a sock type filter screen on the end of it, could be partially clogged with yuck, rust, whatever.
Don't have a good break-down of the carb pictured in either of the books I have here. But I wonder how the fuel shut-off solenoid on the carb would fit into the picture. If it shuts off all fuel flow when you turn the key off, then it could be a suspect in this case. Bad connection in the wires leading to it, could cause it to close, shutting off the fuel supply.
They let you run a Weber there in Ca.? If so go for it. I likes mine.
Posted 10 January 2004 - 11:02 PM
I have a FSM with a exploded view of the hitachi, so i will take a look at that. Thanks for the explination, the carburator is one of the only parts of the car i haven't tore apart and I didnt quite understand how the fuel is managed by the carb.
Makes sence that the needle or float would cause the problem. If i can find someone to smog my car, i'll put a weber on.
Posted 11 January 2004 - 01:50 AM
Just my 2 bucks
Posted 11 January 2004 - 02:13 AM
Posted 11 January 2004 - 04:17 AM
Hitachi carbs are REALLY easy to take apart, even if you have no clue how they work. Out of necessity, I ripped into one for the first time last spring, and now I wouldn't be scared to on the side of the road seeing only with a flashlight. While you have everything apart, you can check the operation of the fuel cutoff solenoid and anything else that could cause problems.
The idea of a failing fuel pump might be a good one. Maybe turn the ignition on with the fuel line disconnected and see how much comes out. Try restricting the flow a little with your thumb and see what happens.
Posted 11 January 2004 - 06:50 AM
Posted 11 January 2004 - 04:24 PM
Posted 11 January 2004 - 04:37 PM
The filters were replaced.
Im still intimidated by the carb, i have a couple spare carbs (one of which i got from WRX1AB as a matter of fact) that I will tear down 1st... just to get the idea of its workings. Then tear into the 2BBL on the wagon.
Also, the fuel pump only pumps when the engine is rotating and the alt is rotating. My ignition doesnt activate the pump... but ive been thinking of re-wiring the pump to a switch anyhow just to eliminate that possibility.
p.s. WELCOME BACK RICHARD!!! When are you gonna be back in the states? PM me
Posted 11 January 2004 - 04:51 PM
Posted 11 January 2004 - 06:06 PM
The HTKYSA first edition book has a great test for the fuel pump. If you don't have that book, let me know and I'll PM you the procedure.
Is it a DCP 306-26? I have a spare if you need one. Also have one with only 3k on it if you want to just try it and then buy a reman.
Good Luck, Chris
Posted 11 January 2004 - 06:40 PM
Pimped GL, this is a '84 EA81 wagon, pretty much a 4cyl lawn mower engine. There are no crank sensors or anything, thanks for the tip tho
If i replace it, it wont be with another hitachi. I'll tear down my crappy hitachi tonight just to see what parts look like what, and where i can fix what.
Posted 11 February 2004 - 02:53 AM
Being a cheap student at the time, I carefully wrapped the axle ends with teflon tape to take up the slop, and it ran like that for awhile until I got another carb.
I used to have an '83 GL that I took to 330k km before the underbody rusted to the point of it sagging when being put on the lift. Loved that car....
Posted 11 February 2004 - 12:59 PM
I had a similar problem with our '86 GL 5sp EA-82 carbed. At first I thought it was fuel related. I was thinking carb wasn't getting enough gas. Turned out it wasn't getting enough air!
Normally most of the air is drawn from the air stove around the catalytic converter when our car is warming up. In my case, all the air was coming from the cat, even after the engine warmed. Eventually, because the suction was so great down by the cat, dirt particles caused it to become partially plugged, and if there was any water or snow around they'd try to come up that pathway, as well.
So what we had was a carb that was hardly getting any air and sometimes it would get a mix of air and water vapor... wouldn't run well - acted like it wasn't getting enough gas - poor performance and sometimes would die and not start for awhile. Really frustrated my wife, Kate, who drives it most of the time..
See my earlier post for what I did to fix this. Might be a problem on your car, too, if it's similarly equipped (with pre-heater hose that goes from air cleaner down to exhaust).
Here's the link: http://usmb.ultimate...&threadid=11280
Hope you find the problem. Rick
Posted 11 February 2004 - 03:15 PM
my 85 wagon did the same thing I finally decided it was the transistor in the ecm that had failed. I was too lazy to fix it correctly so I just left it wired off the coil +. ran good untill the 2nd owner after me totaled it:(
Posted 11 February 2004 - 03:49 PM
My subie would just loose power and die for no real reason:confused:
It was the Professor Pulmb in the study with a carving knife!
Oh! no wait, sorry I was thinking of something else......
It was the Fuel Pump in the Garage with a Socket wrench!
The old light attached to the fuel pump trick diagnosed my problem.
Two other thoughts,
Have you checked all your coil/spark wires for cracks or resistance?
A basic tune up has always worked magic on my old Subie.
82 Hatch, well it started out as one........
01 Forester, bent but not broken!
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users