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Weber carb refusal to idle?
Posted 03 January 2013 - 03:34 AM
Car: 1986 GL Sedan, EA82, 188K miles with Weber 32/36 DGEV.
When starting the car, Ive always pumped the gas a few times, turned the key and the car fires up, and the RPMs rise to 1500-2000 and slowly rise (can get to 3000 RPMs in about 5 mins) and at about 3000, I tap the gas, RPM drops to 800ish and the car is just at the hash mark above the cold line temp wise... I let it idle a few more minutes, and then I drive off.. havent had an issue until now... Itll run up to about 1800 RPMs and then cut off and die... pump the gas, starts up and goes to 800 RPMs, idles for maybe 5 seconds then dies. Same story on next turn over (and the next and the next....) touch the gas during this time it just dies... everyone once in awhile itll go up higher, about to 1500 with the gas being pushed then die. I tried getting it to drive home after it finally would let me rev it with the gas pedal... about 1/3 of the way home, doing 45 it shudders and hitting the gas does nothing to help accelerate, put it in neutral and the engine just dies.... and you get to coast to a stop.
Possible ideas I have/received:
From GD: Electric choke could be malfunctioning/not working - How do I check this?
Frozen fuel lines (since the car will run for a few minutes, maybe it doesnt continue getting sufficient fuel?) but this did happen before it got really cold out.
I will be recording this process tomorrow morning and posting it in hopes that someone can help me figure this out...
Posted 03 January 2013 - 06:46 AM
you could check the fuel pressure, filters and whatnot. Id check the choke first though, it shouldnt raise up like that if its set right, it should hover at whatever speed you have set until you tap the pedal to release it.
Posted 03 January 2013 - 12:22 PM
Plugged filter,stuck carb float,weak pump etc.
I`d probably try refilling the carby bowl by dribbeling fuel into the bowl vents to see if there is a change.
Check the choke visually w/air filter top removed.
Should be closed before a cold start.
Should open approx. 1/8" after starting.
Should continue opening slowly.
Posted 03 January 2013 - 02:10 PM
But I disconnected the choke wire to see if that changed it, and at first it didnt, then the RPM gauge got really haywire (bouncing up and down at 2-3K RPMs and then car died, tried to turn it over again, nothing. Connected the wire again, and STILL the same "no turn over" just cranking...
So now I have gone from a car that wont idle to a car that wont start :cool: GRRRR...
So new question, what did I do by disconnecting that? How do I fix it... and then we will get back to why it wont idle correctly.
Posted 03 January 2013 - 02:25 PM
Car is running right now, no weird start up or anything... so guess we shall see, its probably warming up so it shouldnt do it anymore...
Video is here:
Shuts off at I think 2:15 and YES YOU CAN WATCH IN HD IF YOU WANT
Posted 03 January 2013 - 05:19 PM
Posted 04 January 2013 - 09:42 PM
Car runs after warmed up but can't stay alive til then.... need to figure this out ASAp as its my transportation... I feel like this is a craptachi issue on a Weber some how... first winter its done this...
Posted 06 January 2013 - 03:04 PM
Fuel pump on it's way out?
Pretty sure we have a winner... Wont even run now, but it doesnt smell like fuel after trying to crank it so much, so this leads to the belief that its not getting fuel.
Doing some research on changing fuel pumps, checking them and also SPFI fuel pump vs carb fuel pump (could get my hands on either)
Posted 06 January 2013 - 07:26 PM
Posted 06 January 2013 - 07:29 PM
I found a used SPFI and a used carb pump for $20 both off wrecked cars, but the "How to keep your subaru alive book" says the pumps outlive the cars Im hoping maybe a loose wire or something... but its been an issue for awhile that went away when I got the car back...
Once battery charges, off to go crank away.
Posted 07 January 2013 - 03:28 PM
Still puzzled. Getting fuel the FIRST time... I had my fuel line off in a container and had my mom crank it, shot fuel into the cup pretty quickly ( right?)
I put the car back together and started it up, he lived! up to 2500 rpms then died and wouldnt fire back over other than for about a half a second.
I guess next test is to get under there with the volt meter and see if maybe the pump is running and then decides to stop running... Which could be fuel pump problem, but could it also be ECU related?
Also, the gas dribbles that came out of the car yesterday (battery died, couldnt crank) were in a container in the engine bay... the gas turned into a gel... Trying to research, either something was added OR its diesel... :/
Posted 07 January 2013 - 05:03 PM
I have the "advantage" of having my fuel pump in the exceptionally dangerous location near the firewall directly in front of the driver's side windshield, so I can listen to the pump prime and can tell when the fuel reaches the pump.
Posted 07 January 2013 - 10:22 PM
I suspect you really need to clean out the carb - probably something floating around in the bowl and intermittently clogging a jet.
Posted 09 January 2013 - 02:54 AM
Posted 09 January 2013 - 03:12 PM
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