major problems, major fixes (bit rambly) - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

79BIG10 · 06-13-2006, 07:55 PM

Get a vacuum gauge and time it using that. Try to time it by getting the best constant vacuum. Use the HEI hose to connect to the gauge. This will give you a constant pull.

magnethead · 06-13-2006, 08:25 PM

How much is one at orielly's? I'll see if we have one but i dont think we do.

magnethead · 06-13-2006, 08:27 PM

Quote:

Originally Posted by 79BIG10

Use the HEI hose to connect to the gauge.

which one is that?

the one with the little cap looking thing on it?

79BIG10 · 06-13-2006, 08:41 PM

On the passenger (left) of the pic at the bottom of the HEI you will see a silver colored round item with a hose connected to it. This is the vacuum advance for the HEI. Pull it off and connect this end to the gauge. I got mine frmo Harbor Freight for $10 I think. You may be able to rent them from O'Rilleys.

magnethead · 06-13-2006, 08:53 PM

oh ok I knew it was the vacuum advance but i always thought it faced driver side. hmm. I'll hunt one down and post an update sometime soon.

magnethead · 06-13-2006, 11:35 PM

I just asked my dad, he said we used to have a vacuum gauge, not sure if we still do. He also (not so jokingly) said that my truck may not even have enough vacuum to have a leak.

He also said that among other things, the cam inside the distributor can rust up and stick the timing wherever the cam lodged up.

Also, he said something about my engine pinging, and I don't notice i pinging that much, but it will diesel sometimes when I shut it off. Right at the end of school I went to shut my truck off in the parking lot and it started dieseling. I re-ignite the ignition, it starts running and hence stops dieseling. I put it in gear and shut the engine off, and it still dieseled (i had the e-brake on and the brake pedal most way down), re-ignite it so it starts running, and did said cycle about 5 times (I re-ignit it about 10 times total while dieseling) before it finally decided to shut down (but not after getting another quick diesel session in).

79BIG10 · 06-14-2006, 12:55 AM

The dieseling sounds like a sign of timing being off. If you're truck didn't have enough vacuum it wouldn't run. It has to create vacuum to be able to pull the air/fuel mixture into the cylinders.

MylilBowTie · 06-14-2006, 02:01 AM

I see why your choke doesnt work the arm isnt hooked up at all. Looks like when it was taken apart it didnt get put back in its place. Looks like the electric choke part and the top plate of the carb need to come off to fix it.

magnethead · 06-14-2006, 03:07 AM

oh...wow..thanks for spotting that, i'll look at it tomorrow!

(edit..that would be today i guess..)

MylilBowTie · 06-14-2006, 03:18 AM

Looking at it again I don't think you have an electric choke its a divorced choke. It still needs attached. Maybe someone here can better tell you how to fix it than I. I haven't messed with those to much.

You might get lucky enough to unscrew it from the choke butterfly. Then maybe get the back into the part where it attaches in the carb. But Im not sure. That would be alot easier than pulling the top plate of the carb.

magnethead · 06-14-2006, 03:36 AM

Is that the rod that goes straight down vertically into the hole right next to the butterfly?

MylilBowTie · 06-14-2006, 03:41 AM

Yes that is where it goes. Looks like the top part of the hanger rod is okay. But it isn't in the hole where the bottom part of the hanger attaches. You might be able to get a flashlight and see in the hole and see what I'm talking about. There should be a little arm or lever type part almost all the way at the bottom.

magnethead · 06-14-2006, 04:01 AM

I'll look at it and post back tomorrow.

magnethead · 06-14-2006, 11:15 AM

It's safe to run the motor with the vacuum advance disconnected (but plugged) isn't it?

thing is, i don'tknow how the rod came out. We've never had the carb apart, and it wasn't like that when we replaced the choke coil.

magnethead · 06-14-2006, 12:35 PM

update 1: that choke ber thin was completely unhooked, looks like a pin or something came off one end..who knows where it went!

magnethead · 06-14-2006, 12:43 PM

update 2: Using a flashlight, i am able to see where the rod attaches. The clip that goes on it is at the bottom of that hole, and it looks like the top plate will need to be removed. On to the next item of business....

magnethead · 06-14-2006, 01:01 PM

update 3: We don't have a vacuum gauge that I could find. I pulled the dizzy cover off and the rotor looks to be in moderate condition.

magnethead · 06-14-2006, 02:24 PM

update 4: Yes, the rotor is completely clean, only minute deposits on the very edge. I checked the coil per Jeff's site.

from the power to tach terminal was 0 ohms
from the tach to the coil was rangine from .002 to .009 ohms
from ground to coil was .002 ohms.

magnethead · 06-14-2006, 03:46 PM

magnethead · 06-14-2006, 09:39 PM

choke is fixed.

BigDan3131 · 06-15-2006, 02:20 AM

Since writing to you is wasting my time and you dont seem to know squat about that truck. Sell it and have someone else put stuff on your DODGE for you. Your too cheap to buy good parts, yet you want halfassed ways of fixing it. SELL IT NOW

MylilBowTie · 06-15-2006, 02:27 AM

Dan we dont need that kind of talk. Please let that be the end of it.

magnethead · 06-15-2006, 01:23 PM

the timing light crapped out on me so i did it the way i was taught by my dad many years ago. Loosen the dizzy, start the motor (while holding the dizzy), turn it right to start at a retarded setting, then turn left and start giving it some advance. I stopped at a mute point, I turned right about a plug wire width then turned left what seemed like at least 10 degrees. Runs much better compared to before.

magnethead · 06-15-2006, 07:26 PM

latest video from today, after fixing timing

http://www.youtube.com/watch?v=zDIyIeFayTo

magnethead · 06-15-2006, 07:48 PM

also, that wheezing type sound i just realized has been in all the video's, that's not the truck. It's interference with the microphone in the camera from something, because it showed up in a couple test movies I did in the house too.

06-13-2006, 07:55 PM	#26
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	Re: major problems, major fixes (bit rambly) Get a vacuum gauge and time it using that. Try to time it by getting the best constant vacuum. Use the HEI hose to connect to the gauge. This will give you a constant pull. __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

06-13-2006, 08:25 PM	#27
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) How much is one at orielly's? I'll see if we have one but i dont think we do.

06-13-2006, 08:41 PM	#29
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	Re: major problems, major fixes (bit rambly) On the passenger (left) of the pic at the bottom of the HEI you will see a silver colored round item with a hose connected to it. This is the vacuum advance for the HEI. Pull it off and connect this end to the gauge. I got mine frmo Harbor Freight for $10 I think. You may be able to rent them from O'Rilleys. __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

06-13-2006, 08:53 PM	#30
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) oh ok I knew it was the vacuum advance but i always thought it faced driver side. hmm. I'll hunt one down and post an update sometime soon.

06-13-2006, 11:35 PM	#31
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) I just asked my dad, he said we used to have a vacuum gauge, not sure if we still do. He also (not so jokingly) said that my truck may not even have enough vacuum to have a leak. He also said that among other things, the cam inside the distributor can rust up and stick the timing wherever the cam lodged up. Also, he said something about my engine pinging, and I don't notice i pinging that much, but it will diesel sometimes when I shut it off. Right at the end of school I went to shut my truck off in the parking lot and it started dieseling. I re-ignite the ignition, it starts running and hence stops dieseling. I put it in gear and shut the engine off, and it still dieseled (i had the e-brake on and the brake pedal most way down), re-ignite it so it starts running, and did said cycle about 5 times (I re-ignit it about 10 times total while dieseling) before it finally decided to shut down (but not after getting another quick diesel session in).

06-14-2006, 12:55 AM	#32
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	Re: major problems, major fixes (bit rambly) The dieseling sounds like a sign of timing being off. If you're truck didn't have enough vacuum it wouldn't run. It has to create vacuum to be able to pull the air/fuel mixture into the cylinders. __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

06-14-2006, 02:01 AM	#33
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Re: major problems, major fixes (bit rambly) I see why your choke doesnt work the arm isnt hooked up at all. Looks like when it was taken apart it didnt get put back in its place. Looks like the electric choke part and the top plate of the carb need to come off to fix it. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

06-14-2006, 03:07 AM	#34
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) oh...wow..thanks for spotting that, i'll look at it tomorrow! (edit..that would be today i guess..) Last edited by magnethead; 06-14-2006 at 03:10 AM.

06-14-2006, 03:18 AM	#35
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Re: major problems, major fixes (bit rambly) Looking at it again I don't think you have an electric choke its a divorced choke. It still needs attached. Maybe someone here can better tell you how to fix it than I. I haven't messed with those to much. You might get lucky enough to unscrew it from the choke butterfly. Then maybe get the back into the part where it attaches in the carb. But Im not sure. That would be alot easier than pulling the top plate of the carb. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

06-14-2006, 03:36 AM	#36
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) Is that the rod that goes straight down vertically into the hole right next to the butterfly?

06-14-2006, 03:41 AM	#37
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Re: major problems, major fixes (bit rambly) Yes that is where it goes. Looks like the top part of the hanger rod is okay. But it isn't in the hole where the bottom part of the hanger attaches. You might be able to get a flashlight and see in the hole and see what I'm talking about. There should be a little arm or lever type part almost all the way at the bottom. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

06-14-2006, 04:01 AM	#38
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) I'll look at it and post back tomorrow.

06-14-2006, 11:15 AM	#39
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) It's safe to run the motor with the vacuum advance disconnected (but plugged) isn't it? thing is, i don'tknow how the rod came out. We've never had the carb apart, and it wasn't like that when we replaced the choke coil. Last edited by magnethead; 06-14-2006 at 11:17 AM.

06-14-2006, 12:35 PM	#40
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) update 1: that choke ber thin was completely unhooked, looks like a pin or something came off one end..who knows where it went!

06-14-2006, 12:43 PM	#41
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) update 2: Using a flashlight, i am able to see where the rod attaches. The clip that goes on it is at the bottom of that hole, and it looks like the top plate will need to be removed. On to the next item of business....



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06-14-2006, 01:01 PM	#42
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) update 3: We don't have a vacuum gauge that I could find. I pulled the dizzy cover off and the rotor looks to be in moderate condition.

06-14-2006, 02:24 PM	#43
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) update 4: Yes, the rotor is completely clean, only minute deposits on the very edge. I checked the coil per Jeff's site. from the power to tach terminal was 0 ohms from the tach to the coil was rangine from .002 to .009 ohms from ground to coil was .002 ohms.

06-14-2006, 03:46 PM	#44
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly)

06-14-2006, 09:39 PM	#45
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) choke is fixed.

06-15-2006, 02:20 AM	#46
BigDan3131 Registered User Join Date: Jun 2006 Location: Maple Valley, WA Posts: 1,913	Re: major problems, major fixes (bit rambly) Since writing to you is wasting my time and you dont seem to know squat about that truck. Sell it and have someone else put stuff on your DODGE for you. Your too cheap to buy good parts, yet you want halfassed ways of fixing it. SELL IT NOW

06-15-2006, 02:27 AM	#47
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Re: major problems, major fixes (bit rambly) Dan we dont need that kind of talk. Please let that be the end of it. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

06-15-2006, 01:23 PM	#48
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) the timing light crapped out on me so i did it the way i was taught by my dad many years ago. Loosen the dizzy, start the motor (while holding the dizzy), turn it right to start at a retarded setting, then turn left and start giving it some advance. I stopped at a mute point, I turned right about a plug wire width then turned left what seemed like at least 10 degrees. Runs much better compared to before.

06-15-2006, 07:26 PM	#49
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) latest video from today, after fixing timing http://www.youtube.com/watch?v=zDIyIeFayTo

06-15-2006, 07:48 PM	#50
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	Re: major problems, major fixes (bit rambly) also, that wheezing type sound i just realized has been in all the video's, that's not the truck. It's interference with the microphone in the camera from something, because it showed up in a couple test movies I did in the house too. Last edited by magnethead; 06-15-2006 at 07:49 PM.

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