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battery is fine now, but won't start-URGENT TRUCK HELP

84gmcjimmy said:
Alright I will do that tomorrow and report back.
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Anything wet will dry by then. If nothing shows, repeat the starter drill again & see if there's any wet plug. I'm not sure if any plug would be "black". Overall, its worth a look.
 
No smoking while pumping gas.:bow: Float needle seat not closing, or choke stuck shut. Some books with pics, from the library can only help.
 
I have a book on rebuilding the carb, but couldn't really find any info when I flipped through it.

oh yeah, and when I was trying to start it, sometimes a big puff of "steam" would come up where the primaries are located. Not sure what that was from??
 
84gmcjimmy said:
I have a book on rebuilding the carb, but couldn't really find any info when I flipped through it.

oh yeah, and when I was trying to start it, sometimes a big puff of "steam" would come up where the primaries are located. Not sure what that was from??
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"Puff" chages things. Thats fuel/air, probably perfect for a boom, just not happening in the cylinder. So the distributor is clamped down? In other words, could the "dizzy" have moved, was it loose?
 
Okay so I will check the distributor in a minute to make sure it's tight. Anything else I can check. With the "puff" it only happened 1/2 the time I tried starting it...

Thanks for all your help.
 
Checked the distributor and its on tight and didn't move when I touched it.
I tried starting it again today and it seems like its not getting fuel. It sounds like its starting up but just spits when I floor it.
I will check the spark plugs tomorrow it was too dark to see when I went out.
 
Well I finally pulled one spark plug. It was #3 on the right side of the engine (looking from the drivers seat) and you guessed it. BLACK AND WET. I didn't take a picture, but the best description i can do is it looked like someone sprayed black paint on the spark plug seconds before I took it out.

Now what do I do?
 
Still sounds like your choke is not opening as the engine warms. So, gotta clean all the plugs, then find out why choke not Mongo.:D
 
So just wipe off all the gunk with a rag them put the plugs back in? Maybe a video would do for the choke? if only my firewire cable worked on the compuiter :mad:

I dislike the choke now.
 
The choke wire should get it's power after the oil pressure switch...this is so the choke coil doesn't get power if the key is on but the motor is not running. If the choke gets keyed hot regardless then it'll continue to open if the key is 'on' even if the motor isn't running.

Let it sit, then unplug the wire from the choke. blip the gas pedal once and start it up...it should be on the high idle. Now while it's still running connect the wire to the choke. Watch what the choke plate does. It should take 10-20 seconds for the choke plate to begin to open and then another few minutes for it to open all the way.

I would guess you need to adjust your choke so it doesn't open so quickly.

Rene
 
Okay I cleaned the spark plugs only 4 of them though because I was taking too long. Anyways after I finally got them back in there respectable holes I took out the fuel filter to make sure it wasn't clugged. Looked fine but a lot of gas poured out, or more than I remember from last year. Anyways I tried firing it up again and on the first try it fired up. But it was running rough as hell and almost stalled...then I tried to prevent it from stalling and a loud pop and a bunch of smoke or steam or something came from the carb. I think is what is referred to as a backfire? It wasn't like before with just a puff, it made a fairly loud noise and twice or 3x as much stuff "poofed" out.

ideas?

When the carb just sits all the flaps are closed. But when I hit this lever (has a "Y" on it) the front flap opens. But when I press the throttle or press down the accerelator pump it closes again. Is this regular functioning?

Thanks

EDIT:
When it started up I noticed the exhaust smoking a lot. I don't know if it is the normal amount or what since its pretty cold out (-10*C) it was all white.
 
tRustyK5 said:
The choke wire should get it's power after the oil pressure switch...this is so the choke coil doesn't get power if the key is on but the motor is not running. If the choke gets keyed hot regardless then it'll continue to open if the key is 'on' even if the motor isn't running.

Let it sit, then unplug the wire from the choke. blip the gas pedal once and start it up...it should be on the high idle. Now while it's still running connect the wire to the choke. Watch what the choke plate does. It should take 10-20 seconds for the choke plate to begin to open and then another few minutes for it to open all the way.

I would guess you need to adjust your choke so it doesn't open so quickly.

Rene
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Thanks Rene, I will try that soon and see what happens.
 
Backfiring like that when cold is a sure sign the choke is opening up way to quickly.

When the motor is cold and the choke coils are cold that choke plate should be closed up top. As I said before it should take a little while for that plate to begin to open up. There are three screws holding the round black plastic choke housing on the side. If you loosen those up you can rotate the choke housing...this adjusts how long the choke stays closed before the bi-metal coil begins to open the plate up.

Rene
 
Sorry I forgot to update sooner....

Never tackled it on the weekend when I had time. I was going to on Sunday but it decided to snow a few inches, so that didn't get me too motivated to get outside and work.

I'm thinking about stealing the carb off the other 350 sittin in the garage and putting it on the blazer to see if it will start. I know before when the 350 was running the carb was okay it just ran a bit rough. Then once I move it (if the other carb works, everything is probably gummed up though) then I can put it in the garage and work on it.

The main thing is just getting it in the garage. From there I can do whatever and wait how ever long to tackle the carb again. It's just taking up 2 parking spots in the back, and the ferd is in the neighboors yard for the last 1-2 weeks? So I need to moved sooner then later.

Before I switch carbs I will mess with the stuff you guys sugested.

The thing I'm having a hard time understanding is why, all of a sudden the truck won't start, after that day I got it going it ran fine for a long time, then I turn it off for a few minutes and it won't start at all. I can't understand why it would change so quickly. Anyone know? If it didn't start at all it would be fine to me, but it's stupid, IMO that it just stopped running when i actually needed to move it and was ready. bad luck streak I gues...
 
If I can't get it started by the this weekend I will get a video of it and go to a friends house and save it, then upload it for you guys to check out. I'm just retarded when it comes to this carb thing, I actually thought I knew something about it :(:(
 
UPDATE.

Well, with my lack of motivation I haven't touched the carb yet.
BUT,...BUT....BUTTTT!!!!!!! I have good news...

It is, like you guys said, 100% the carb that is the problem. It's very mild out today, 6*C and I tried starting it, first time it stalled, second try it started right up! Even idles. man oh man the sound of that engine coming out of the dual exhaust is music to my ears, I haven't heard it for so long :(

Anyways I moved the ferd out of the way and back on OUR property, and the Jimmy is parked beside it. Tomorrow once I find someone to be my spotter I will bring it in the garage. Now, hopefully the short wheelbase will help because when we moved and used the ford truck (long box, not crew cab but something else, has fold down bench in back, f-250) to drop off the stuff we scraped the paint along the garbage can box thingy, it's really tight.

I will update tomorrow IF I get it into the garage, and then I will work something out with connecting the exhaust to some dryer pipe to route it outside and away from my lungs.

ONE more thing to add, when it was idling I went up to the engine and pressed on the throttle on the carb, when I did this a poof of steam/smoke/whatever it is came from the carb, and looked like from the base of the carb, around the thick gasket. I don't know for sure but I jumped as it scared me, so I'm not positive that is the exact spot it came from.

Ran fine though.

THANKS
 
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