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  #1  
Old July 29th, 2011, 01:04 PM
The Dro
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Truck Stopped Running

I took the truck for a stroll and on my way back it died on me.

Drove +200 miles during the weekend and did 30 miles on my first leg of this stroll.

The truck started on the first try, idle it for a minute or so. Backed it out of the drive way, drove about 20 feet and it died after I shifted into 2nd gear.

Tried to start the truck while driving down hill and then I tried the key. The battery is fine, it will crank.

Before I go on a replacement rampage.

Do you guys think is the coil or condenser?

Or should I say screw it and get all new: cap, rotor, ignition coil, condenser, distributor points, plugs and wires?

Luckily I have all of these NIB in the garage.
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  #2  
Old July 29th, 2011, 01:53 PM
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Wiggle things first. Key, wires etc.
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  #3  
Old July 29th, 2011, 02:21 PM
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I would check to see ignition is adjusted to proper specs. But first -- are you getting spark?
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  #4  
Old July 29th, 2011, 03:56 PM
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1994 D90 300tdi #730, SIII 88
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After you check the ignition, check the fuel. Use the manual pump lever or open the drain the carb.
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  #5  
Old July 29th, 2011, 11:13 PM
The Dro
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UPDATE

At first I had no spark, I removed and checked all wires and was able to see sparks.

The carburetor choke cable assembly was being hold by... and get this... a paper clip. I could go to Staples and get a new paper clip or fix this the right way.

Anyone have a Zenith Carburetor book? I want to see how this should go.

I was able to run the engine for a few seconds with my hand on top of the carburetor... any ideas?

Also, is it normal for that flap to be open like that? That's the no-choke position.
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  #6  
Old July 30th, 2011, 09:49 AM
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Check the fuel delivery. Putting your hand over the venturi is the same as using the choke. Paperclips aside, the choke appears to be ok.
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  #7  
Old July 30th, 2011, 09:54 AM
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The flap closes when the choke operates (cold start).

Is the fuel supply good? Sounds almost like fuel starvation, are the jets in the carb clear?
Does the engine continue running when you stop covering the carb? That might suggest that the extra vacuum caused by covering the carb inlet was sucking fuel through the carburettor at around the correct ratio to get the engine to run.
Is there any sign of "tracking" in the inside of the distributor cap - a tiny crack in the cap that becomes dirty & carbonised & allows the spark to earth to the distributor body.
Sudden stops are more likely to be a broken or loose wire, coils and condensers tend to break down when hot and cause a misfire initially. The condenser stops the points arcing again the engine will run but poorly as the revs increase above tick over speeds.
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  #8  
Old July 30th, 2011, 04:50 PM
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I tried it last night and nothing.

Just tried it again and the truck started right up... WTH?

------ Follow up post added July 30th, 2011 06:18 PM ------

Flooded perhaps?
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  #9  
Old July 30th, 2011, 07:56 PM
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probably
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  #10  
Old July 30th, 2011, 08:27 PM
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Specially if that choke was left on
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  #11  
Old July 30th, 2011, 08:43 PM
The Dro
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I'm positive that the problem was electrical (I had no spark at first), with all the cranking and trying to start the truck... I flooded it.

I drove it around the block and it performed great.

Thanks everyone for your help and support.

Pedro

------ Follow up post added July 30th, 2011 09:04 PM ------

I need to learn how to drive an old vehicle...lol
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  #12  
Old August 4th, 2011, 05:06 PM
The Dro
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I take my last statement back...

Started the truck, ran for a minute or so and died.

I poured some drops of gasoline to the carburetor and started right up.

So, what do I need to check on the fuel pump? On the carburetor?

Thanks,

Pedro
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  #13  
Old August 4th, 2011, 06:44 PM
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Symptoms point to fuel starvation. When you cover the carb, the restriction of air brings the fuel to air ratio down to where it can burn, otherwise it just dies, or will not start at all. Is the truck parked at an angle?. Is the tank low on fuel? If yes, try adding a couple gallons in the tank and try to start it again. The angle may cause the fuel pick up to not be completely submerged sucking in air, and debris from the tank. Is your fuel filter see through and right before the carb? Is the filter clear of crap, and is the amount of fuel inside it normal when cranking over/running? If less than normal, and have a mechanical pump, smell your oil. If it's has a strong gas smell, the diaphragm may be shot in the pump, and leaking fuel into the motor, causing less fuel to get to the carb. If these do no good, then I would look at the carb for the problem. Good luck.
Greg
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  #14  
Old August 4th, 2011, 07:56 PM
The Dro
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Mike and Greg,

Thanks for the feedback.

The truck is leveled and has a full tank.

I took the sediment bowl out, the seal and screen were gone.

I tried to use the hand pump lever (don't know the technical name) to get it primed and it broke. The sediment bowl is not filling up when I crank the engine.

I'll probably install the new pump I have.

Also, I do smell a lot of gas in the engine compartment... Since I got it a few weeks ago.
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  #15  
Old August 4th, 2011, 08:02 PM
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This happened to my Series IIA last weekend after no driving it. Although I'm running a Rochester carb. I took the top off, cleaned the jet, sprayed carb cleaner on the needle valve, moved it around and voila, ran fine.
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  #16  
Old August 4th, 2011, 08:16 PM
The Dro
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I'll probably need to clean the carburetor after I install the new fuel pump.
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  #17  
Old August 4th, 2011, 09:33 PM
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Pedro, please tell me that you are carrying a fire extinguisher in this vehicle. And if you are not, that you are on your way out the door to go buy one RIGHT NOW

Seriously... And yeah sure sounds like that fuel pump is fubared.

Good luck. Sounds like the fuel and ignition systems both need a good going through.
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  #18  
Old August 4th, 2011, 10:06 PM
The Dro
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I have two... Both at arms reach. (seriously)

It's a very light odor... Nothing too alarming.

I'll probably do a major service to it: new cap, rotor, plugs, wire plugs, condenser, coil. I don't how old these stuff are and don't see the point of piece mealing it. And, the best part is, I already have the parts with me.

I'll keep y'all updated.

Thanks for the good info.
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  #19  
Old August 4th, 2011, 10:17 PM
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you forgot points


Quote:
Originally Posted by rrc.swb View Post
I have two... Both at arms reach. (seriously)

It's a very light odor... Nothing too alarming.

I'll probably do a major service to it: new cap, rotor, plugs, wire plugs, condenser, coil. I don't how old these stuff are and don't see the point of piece mealing it. And, the best part is, I already have the parts with me.

I'll keep y'all updated.

Thanks for the good info.
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  #20  
Old August 4th, 2011, 10:49 PM
The Dro
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Quote:
Originally Posted by Ren Ching View Post
you forgot points
I forgot to mention them... Have those too.
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