The smog pump stuff is only nice/useful if the truck is 100% stock and original Including the original exhaust system because when that system is 100% intact there will be very little to no gas smell at the tail pipe but as soon as the catalytic converter gets removed or an aftermarket exhaust gets installed the smog pump becomes useless. Usually I just take the belt off and leave everything intact until I remove the engine then I clean it all up and simplify it. Removing all that junk does make the engine look alot nicer and reduces the chances of vacuum leaks but I would recommend saving all the old smog stuff because some of that stuff is rare and worth something and some people that live in emissions states will pay a fortune for all the smog stuff to make their vehicle legal.
I'm a mechanic in CA and finishing up installing a rebuilt engine in an 84 K5 Blazer. They wanted to keep it all stock for smog legal purposes. Boy o Boy it's been a journey trying my best not to break things and routing everything correctly. Thankfully I marked and photo documented everything. I can't believe how much junk these motors have attached to them. 80's cars are usually this way though.
I did the exact thing on my 85 half ton Chevy with a 350. After I welded the holes in the air pump tubes I sprayed them with penetrating fluid and repeated that a few times after driving it and the flange nuts came out of the manifold and a re welding and grinding was done because my ocd kicked in. I left the charcoal canister on mine to prevent the smell of gas. Sure wish I had never sold that truck.
Radio One Receive tomorrow I am tackling the drivers side exhaust manifold leaky gasket (hopefully the bolts come out). I learned my lesson and am not selling this truck. Take care
You have a beautiful old truck I’ve never seen one that color but the firewall tells me that that’s factory? Mine is fire engine red with a white roof and I’ve never seen one in my whole life till I bought this one then I’ve seen a few mines only got 60,000 miles on it and being in New Hampshire we have this stuff called rust and so I need to do a little bodywork but the frame the undercarriage everything in the truck is beautiful because it was oiled they just didn’t get inside the door panels or the fender wells so I’ve got a little bodywork to do but I just had to say you have a beautiful looking old truck❤️🔥🇺🇸
I really appreciate the kind words! That’s awesome that you have one. I love having a classic vehicle that you can actually use. It’s also cool that you can haul six people if need be. The dogs have their own seat also!!🥳
Your engine looks so much cleaner than mine there are so many vacuum lines mines all original you can’t even see the top of the engine and all my vacuum lines are factory everything on the truck is factory and so I’m sure all those vacuum lines are garbage and before I watched your video I was thinking of replacing them all one by one now I’m thinking about which three I actually have to have and the other 79 can go in the dumpster!
1/4-18 NPT I bought 8 of them at Menards for like $10. Just be sure to penetrating oil them and then heat them up. I broke 2 off in the block for being impatient.
All that black dust is your fan/alternator belts rubbing on something. I guess you fixed that too. I pull off the manifold pipes and capped them off with threaded plugs.
Is that a Wheatland yellow squarebody? I have an '86 c20 that color. Getting ready to put a vortec 350 in it so all this smog stuff will go away in the process. Thanks for sharing!
Colonial yellow🤷🏼♂️!! I would like to replace my square body with either Vortech or LS. Something that is more reliable and gets possibly better than 7 miles to the gallon!!! you're welcome
It looks like on my truck that the vacuum advance line off the distributor runs to those fittings on that thermostat housing. This is what happened, I ditched that big air filter for a regular open element filter and now it pops and has no power in 4th gear, it's definitely a vacuum issue but I can't figure it out
That’s the tough part about these trucks and they’re brittle vacuum lines and fittings. Just take some carburetor cleaner and spray it around and vacuum lines are. At an idle, will raise the idle when you find the leak. There is only a few vacuum lines coming off your air cleaner. And i believe those are the heat activated thermal switches. The vacuum advance should be coming off your carburetor, ported vacuum. It can be ported or manifold, which ever runs best. The backfire sounds like timing and not vacuum leak.
It would be beneficial to replace your carburetor with 550 Edelbrock or... it’ll run a lot better and you’ll only have three vacuum lines. Vacuum advance equals ported, transmission vacuum modulator equals manifold vacuum(pass side front of carb), Power brakes is the back big port. You can switch manifold and ported vacuum back-and-forth to see which way it runs better, as far as your vacuum advance. The Edelbrock carb runs better and is so much more simple. I have a video where I swapped the Edelbrock.
@@zmurray9499 I'm going to keep it quadrajet for now until I rebuild the whole engine. Just wondering where you ran the vacuum lines from the carb ports.
@@austenolson9855 I pretty much swapped the carpet and got rid of the omissions crap at the same time. I’m sure you can Google the vacuum routing, I don’t remember.
The smog pump stuff is only nice/useful if the truck is 100% stock and original Including the original exhaust system because when that system is 100% intact there will be very little to no gas smell at the tail pipe but as soon as the catalytic converter gets removed or an aftermarket exhaust gets installed the smog pump becomes useless. Usually I just take the belt off and leave everything intact until I remove the engine then I clean it all up and simplify it. Removing all that junk does make the engine look alot nicer and reduces the chances of vacuum leaks but I would recommend saving all the old smog stuff because some of that stuff is rare and worth something and some people that live in emissions states will pay a fortune for all the smog stuff to make their vehicle legal.
You make it sound like the smell of gas is a bad thing haha😂
I'm a mechanic in CA and finishing up installing a rebuilt engine in an 84 K5 Blazer. They wanted to keep it all stock for smog legal purposes. Boy o Boy it's been a journey trying my best not to break things and routing everything correctly. Thankfully I marked and photo documented everything. I can't believe how much junk these motors have attached to them. 80's cars are usually this way though.
I did the exact thing on my 85 half ton Chevy with a 350. After I welded the holes in the air pump tubes I sprayed them with penetrating fluid and repeated that a few times after driving it and the flange nuts came out of the manifold and a re welding and grinding was done because my ocd kicked in. I left the charcoal canister on mine to prevent the smell of gas. Sure wish I had never sold that truck.
Radio One Receive tomorrow I am tackling the drivers side exhaust manifold leaky gasket (hopefully the bolts come out). I learned my lesson and am not selling this truck. Take care
These systems aren't required? I unhooked them to work on the carb and think I put em back wrong causing my truck to diesel
Depends on where you live
I noticed in your thermostat housing you still had another hole. Was that for the sender? And you said 1/2” plug for the emissions vacuum thingy?
They are both thermal vacuum switches (not sending unit). 3/8’s and 1/2 inch plug
You have a beautiful old truck I’ve never seen one that color but the firewall tells me that that’s factory? Mine is fire engine red with a white roof and I’ve never seen one in my whole life till I bought this one then I’ve seen a few mines only got 60,000 miles on it and being in New Hampshire we have this stuff called rust and so I need to do a little bodywork but the frame the undercarriage everything in the truck is beautiful because it was oiled they just didn’t get inside the door panels or the fender wells so I’ve got a little bodywork to do but I just had to say you have a beautiful looking old truck❤️🔥🇺🇸
I really appreciate the kind words! That’s awesome that you have one. I love having a classic vehicle that you can actually use. It’s also cool that you can haul six people if need be. The dogs have their own seat also!!🥳
Your engine looks so much cleaner than mine there are so many vacuum lines mines all original you can’t even see the top of the engine and all my vacuum lines are factory everything on the truck is factory and so I’m sure all those vacuum lines are garbage and before I watched your video I was thinking of replacing them all one by one now I’m thinking about which three I actually have to have and the other 79 can go in the dumpster!
Did it run again after all that?
Any idea if you have an EGR valve? I'm wondering if you can show the location. I have the exact same setup as you.
The EGR was already taken out before I bought it. Behind the carburetor , Passenger side. They sell a block off or you can make your own.
Thanks for uploading, what belt did you use after deleting the airpump?
Sorry, I forgot to get back to you. There were two belts, just took the one off. The fan and power steering or separate belts
@@zmurray9499 Thanks, my 81 5.7 goes to the fan, alternator and the crank....
I'm trying to do this on my 1985 buick lesabre were do I start
@@yahbahisrael6522 Remove your catalytic converter first
Did you ever figure out what size the manifold plugs are? The ones you welded.
1/4-18 NPT
I bought 8 of them at Menards for like $10. Just be sure to penetrating oil them and then heat them up. I broke 2 off in the block for being impatient.
@@austenolson9855 when you say heat them up can you explain please?
All that black dust is your fan/alternator belts rubbing on something. I guess you fixed that too. I pull off the manifold pipes and capped them off with threaded plugs.
Is that a Wheatland yellow squarebody? I have an '86 c20 that color. Getting ready to put a vortec 350 in it so all this smog stuff will go away in the process.
Thanks for sharing!
Colonial yellow🤷🏼♂️!! I would like to replace my square body with either Vortech or LS. Something that is more reliable and gets possibly better than 7 miles to the gallon!!! you're welcome
It looks like on my truck that the vacuum advance line off the distributor runs to those fittings on that thermostat housing. This is what happened, I ditched that big air filter for a regular open element filter and now it pops and has no power in 4th gear, it's definitely a vacuum issue but I can't figure it out
That’s the tough part about these trucks and they’re brittle vacuum lines and fittings. Just take some carburetor cleaner and spray it around and vacuum lines are. At an idle, will raise the idle when you find the leak. There is only a few vacuum lines coming off your air cleaner. And i believe those are the heat activated thermal switches. The vacuum advance should be coming off your carburetor, ported vacuum. It can be ported or manifold, which ever runs best. The backfire sounds like timing and not vacuum leak.
The vacuum advance shouldn’t be coming off those thermal switches.
Strange that it would run fine. Until fourth gear
Also vacuum line routing diagram or video?
It would be beneficial to replace your carburetor with 550 Edelbrock or... it’ll run a lot better and you’ll only have three vacuum lines. Vacuum advance equals ported, transmission vacuum modulator equals manifold vacuum(pass side front of carb), Power brakes is the back big port. You can switch manifold and ported vacuum back-and-forth to see which way it runs better, as far as your vacuum advance. The Edelbrock carb runs better and is so much more simple. I have a video where I swapped the Edelbrock.
@@zmurray9499 I'm going to keep it quadrajet for now until I rebuild the whole engine. Just wondering where you ran the vacuum lines from the carb ports.
@@austenolson9855 I pretty much swapped the carpet and got rid of the omissions crap at the same time. I’m sure you can Google the vacuum routing, I don’t remember.
can this be doon on a TBI motor ?
You might have a check engine light and have to get A different size belt. But yes
@@zmurray9499 Did you get this handled if so what size belt?
Took them out and put bolts in mine
I broke the tubes off just by wiggling the whole thing and then just used an impact and a socked
ALL I HEARD WAS UHHH UUHHH UMMMM WTF
You're certainly an angry little guy. Good luck in life👍🏼
When you are working on a late 70s through 80s vehicle these are the sounds you will make.