Chevy TBI rebuild (GM Vehicles V6 V8 SBC BBC)
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- Опубліковано 1 жов 2017
- how to rebuild a TBI on Chevy or GM cars and trucks
Reconstrucción de TBI
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What can I say? Everybody agrees that this is absolutely a top-notch how to video. Thanks 3rd Gen Guy!
Absolutely
The finest how to video I've seen. Not a lot of babble just plain and simple instructions.
As good a any commercial production.
Thankyou. Made it so easy.. great video. And greatly appreciated you taking time to help
Right!!
Some notes for those of you about to tackle this rebuild; It's super easy, and 3rd Gen Guy goes into incredible detail with this, but having just done this yesterday I have some tips/advice to add with issues I ran into. Also thank you so much 3rd Gen Guy, without your video I would have had to have a mechanic do this. Thanks a ton.
1) LUBRICATE THE O-RINGS! I did not do this, and I blew out the O-rings! The injectors started dumping fuel out into the throttle body, and my car sounded like a truck! Struggled to start, stay on, it was super ugly. Had to let the car spend the night in an O Reilly parking lot and didn't find the issue until the next day. The Haynes manual says to use transmission fluid, but motor oil (what I used), vaseline, and dish soap all work good too.
2) Removal of the injectors. My injectors did not simply pull out, no matter what I used. I used vise grips ontop of where the screws go, holding down the injector pod cover, with some cardboard to protect the smooth gasket face, and using the head of the vice grips as a leverage point, used a screwdriver underneath the center "mushroom" between the two poles of the injector to pry it up out of its seating. Much easier than scarring the injector by clamping down too hard in my case.
3) If you dont have an electrolysis kit, some carb/choke cleaner will run you 6 bucks for 2 bottles and you can pick up a pack of little wire brushes (plastic, brass & steel) at an auto store. Combined with some Q-tips and maybe a little PB Blaster (make sure you wash everything out afterwards with carb cleaner if you use this) and you can polish that aluminum right up.
4) Make sure to take pictures of everything as you're disassembling it step by step
Hope this helps anyone trying to head this on. Thanks again for the video.
Thanks for the info. Putting the parts into a cardboard map is a great idea + the pictures . I would also check all metal surfaces for warpage with a metal straight edge . I also check the throttle shaft for excessive play in the bushings . Use flare nut / tubing wrenches and 6 point sockets where possible . Great video . Bill .
Hey! Thanks for the tips! I have a question though... I have a couple o rings left over in my kit. A green one and I think a couple larger black ones, ( but still smaller than the O-rings that go in the injectors)and the foam ring. I also have to larger figure eight o rings that I believe go to the Rochester 300 along with the other plate gasket. I guess my question is... Is this normal to have these leftover on the 220 Rochester rebuild?
@@bonscotty67 Im not certain :( my 3rd gen got totaled last year by a drunk driver so I haven't worked on one in a bit. I would look up some schematics for the Throttle body or the parts list of the kit you bought to see if it describes what they are.
Thanks for replying. Yeah it's just one small green o ring and a little larger black one, the foam ring.
And the figure eight that I know goes to the 300. Anyway I'll have to taking apart again and see if I collapsed the fuel regulator gasket. Pressing it down with that spring was kind of a hassle and probably f'd it up. I've replaced about everything on this truck and it still runs like crap. Oh well. Thanks again. Wish me luck :-)
How do you lubricate the o rings?
Great to see extra info on TBI Gasket (9:34) & Idle Air Control reset ( 11:30).. no one else has mentioned that! Invaluable...
Best TBI rebuild vid on the tube. Thanks dude!!
Seriously!
One of the top 10 youtube videos on car repair I've ever seen.
I'm a working Tech professional, great job on this video! Although I do this for a living and have done this procedure many times, I enjoyed the detail without the B.S..
ordered my kit and new injectors, after watching your video i have the confidence to do this, thank you
This video was a HUGE help to me. I did the TB on my 92 RS yesterday, and because of the video the hardest part was getting some of the old gaskets off. As someone else said, definitely a good idea to lubricate the o rings!
This will be the first engine I rebuild starting with that TBI. So happy to have come across these videos of yours. Wish me luck. LOL
Thank You 3rd Gen Guy. This video was very helpful. I rebuilt my TBI today. You made it look easy! I had trouble with one of the injectors leaking from the top, and google told me it was an o-ring problem. The orings that came with the rebuild kit were slightly too large and kept coming out as I tightened down the plate on the injectors. I solved this by putting the rubber oring in first followed by the steel oring. No leaks now. Also... after completing this, the injectors seemed super loud inside the cab of my truck, the rapid ticking sound was really loud, I thought I broke something. Consulted google again, turns out it was just one of the steel fuel lines was making contact with my cab, the noise is normal but not supposed to be transmitted into the cab. I pulled the steel fuel line away from the cab and buffered it with plastic corrugated covering stuff. No more noise! Finished. I didn't tune it yet, but I will do that maybe next week. Thank you for showing us how to do that as well, you're awesome.
Well done very clear and concise i followed this on my 1994 Astro 4.3, and it runs much smoother now.
Best TBI rebuild video I've seen. Well Done.
Perfect, Just what I needed. I will watch it a few more times before I tackle the rebuild.
And plan to have a laptop handy during the work so I can watch parts of it again.
Great video, shows and explains along the way from the beginning to the end. I'm going try this project myself..thank you
after watching your video, I am planning to rebuild my TBI unit. I have the TBI cleaned and spread out on my table, and have a rebuild kit . I want to watch this video a few more times, then get busy on the rebuild.
I have a 4.3 chevy tbi on my Franken Jeep with the amc 258 and this video was an asset to my rebuilding the tbi unit.Thanks!
Thanks! Great! Had serious problem with a 89 350 tbi that I installed in a 56 chevy pickup. Did not respond and very hard to start. Followed Your instruction, never worked with a fuel injected trottle body before. Got a fuel leak from the fuel pressure regulator, did it right, was a bit more careful with the spring, not a big deal. Magic, it runs so well, and so responsive and starts in a fraction of a second. / Bo Johansson, Sweden.
As I sit here now, I'm gonna admit that I NEVER knew about the reset. Never!! Great vid, very informative, and straight to the point. Thx for sharing /posting. Gonna attack my Yukon when I get the rebuild kit next week. And I'm also a 3rd Gen lover/owner😁😏👍🏿👌🏿. 85 Z
The perfect DIY video. Everyone who posts videos such as these, should take lessons from you. My 93 Chevy 1500 is back on the road thanks to you .....Thank you very much.
Exceptional work on this video. I appreciate the step by step simplicity of the instructions without all the extra dialogue.
tt was a pleasure to watch this video as I did a rebuild on the tbi of my 87 s10 blazer last year. The one thing that I did differently was to fabricate a fitting that I could pump carb cleaner thru the injectors while using the 9v battery technique. I was concerned about clogged injectors so I wanted to insure that the spray pattern was excellent. I had to do other things at the same time, o2 sensor, throttle position senson and just recently the idle control valve. The enjine has great power for a 2.8 and is very responsive on acceleration. I wish I had seen your video when I was going to attempt the job. It was a good review for me.
Excellent video. Straight . No fluff. Thank you
One of the greatest videos so far!
Excellent video.
My 1989 Chevy Cheyenne one ton SB 350 TBI is getting rebuilt soon by me with the help of this video.
Thanks for sharing this step by step rebuild. You took the guess work out of the job.
I'm going to subscribe, I just got a 3rd gen Firebird and your tutorials will help with rebuilding the car. Thank you for going in to detail on this tutorial and many others on your channel it will help me significantly.
Thank you for this video. Finally was able to get to rebuilding the TBI on my 95 chevy c1500 v6. Everything went perfectly!
owner of a 92 chevy tbi, -great video!!!
Great tutorial. I've rebuilt a TBI once before. This was a good refresher for me. One thing I did not learn until now is the idle re-program which you show here. If it is the same step for the truck v6 as with the engine you have in the Camero, shown here, then that would be the only thing left for me to do for my pick up truck. Thanks, again.
Great step by step video. Mine was with an upgraded lower half and a new spring for greater fuel pressure. Only thing I would change would be pulling the injectors with pliers. This is a bad idea and actually much harder than levering them out. The key is to break the hold on the bottom ring. Pulling straight up is more difficult. Loved it.
They can be pushed up from the bottom.
my dad told me these were simple to work on. i didnt realize just HOW simple they were. great video. i have a buick 350 i wanna adapt a tbi onto. might just do that sooner than later. =)
Any tips on putting a tbi 350 into a g body? 86 Cutlass.
@@adamwhitt9349 Buy a Chevy and gut the Cutlass.
Thank so much, greeting from Bangkok,,,,,
Excellent explanation of directions, filming ! Thank you much sir!
Hands down the best rebuild video. I was going to make a video and post myself but after watching
this one I've decided to make my money else wear. Great job!!
glad you liked it.
but trust me, these videos make a small amount of money. like very little
I don't even have a TBI (got TPI), yet this is such a great and interesting video. Great job!
Just did this procedure and the video was a big help. Suggestion: while installing the fuel pressure regulator gasket, I cut 4 pieces of aluminum wire approx .100 thick and 6"long to make posts to keep the spring, cover and gasket straight as I collapsed it. Insert the wire post through spring cap and bottom assembly. The posts kept the housing centered and the gasket in correct position. Remove post one at a time and tighten screws. Great video, thanks for posting!
Thank for this video really helped with my 94 tbi rebuild
Great video thanks for the heads up on the reset!
Watched it again...!
Great Job...👍
Great detail, 3rd Gen Guy, with good narration! There are VERY FEW quality videos available on rebuilding these older throttle body units. Thanks for your help and for the helpful tips, also.
Duke, The only parts I have left from Chicago Carburettor kit 1991 Astro van 4.3 liter are two little mystery ‘ out 1/8 in livameter plastic with a little clear at bottom
letting a little sunlight shine. A hearty hurrah from Geneva, Ohio close to Lake where van can hopefully lunch a 1960’s Day Sailor without becoming fish food
or laughing stock of ‘hilarious boat launch’. I work better from direct instruction; Mom looking down (she bought this Van in 1991) thanks 3rd Gen Guy and wonderful designer (s).
The Quality & Clarity on this video is unlike any out there...
No Rambling, Stupidity, or
Carrying On instead of Clearcut Instructions..!
It was exactly what I needed to fix my TBI...
Thank you so much Sir...🙏
Glad I could help.
car You-tubers tend to forget: they should SHOW people how to do something, not talk about how they did it.
@@3rdGenGuy
Thank you once again...🙏
Simple and to the point. Perfect.
That looks fun. I can't wait to do that to my Camaro .
Woah . Had like 8 of this style trucks and just learned their are gasket for the air intake and that can wow
Learn something new everyday
Jeremy, Because automobiles are ubiquitous, I tended to take Mom’s Chevy ‘91 van as a boat building carrier to Florida. I ride bicycle after measuring Cutty Sark
to build Caledonia, built across river Leven, Scotland in 1850. Umpteen journeys
to Cedar Key, Fl. are promising. Oak keels, steel bending hand tools, lots of wood, and following Lloyd’s Rules of 1868. Chevrolet is driven no more than 44 mi/hr to conserve fuel and park for months at a time. It’s half length of Denny’s Caledonia which hauled coal from Stockton to London.
I really listened to 3rd Gen Guy’s inflections of words he speaks.
Nice! Thanks for taking your time.
Very precise. Thanks, going to do my 89 c 1500 this weekend
This is gonna help a lot bc my step dad gave me a 1992 camaro rs like this before he died and it is in bad shape thx for helping me with the tbi
Watch dozens of BRO throttle body rebuilds and this was definitely my favorite video So far. Great work. Please post more builds and repairs.. anything just gives us facts and less about what you had for dinner lol
many ""car you tubers" drive me insane.
its always a "HEY GUYS 69-69X here gonna install an eBay coil over kit"
they then show no steps and turn it into a Vlog.
very smart guy, lol.. just what i needed to know about my 95 chevy v6
Great video and well informed on the step by step procedure, keep it up thumbs up.
Since replacing the IAC it been idling high, the last part is good to know, of course it wasnt done..but I'll get it tomorrow...great info...'94 Chevrolet Cheyenne 4.3l
Excellent video. Best I've seen. Great job!
Very well explained and easy to understand Thanks
Great video
Perfect video just what I was looking for! Thank you
Best TBI video ever, thanks 😊
Thank you very much! I like this video! Respects from Finland!
Good stuff. Best video out there. Thanks for the help!
Nicely done. Very thorough and complete.
Got a 94 c1500 going to do it myself now excellent video
Great, looks like I should do this to my Firebird!
Just right, I really enjoyed watching this video thanks its really well explained 👍👍👍👍👍
Best video I could fined ,learned a lot ,very good
Wow that was really good and very thorough👌
Awesome video man!! Thanks
Goes very helpful with the idle air control because I’ve been having problems with mine and I didn’t know it had to be adjusted that way, thank you for the video it was very helpful
Vacuum leak somewhere. Throttle shaft end/s likely. A simple TBI rebuild should not alter the factory set idle speed.
Great video! I’m going to link it in the description of mine, I’m doing some mods and your video showcases a rebuild far better than I did 😂
go for it, i don't mind.
Thank's a lot! Easy and clear what to do!
Gracias mtro, x su información,le doi un diez, saludos d ver, mex,
Thank you for this video, again very helpful! I'm gonna do that next spring.
do it now so you can enjoy your car next spring!
That looks pretty simple to do thanks for some good advice
Great vid, now i tear into my 1990 wrangler 4 cyl's gm tbi and see what i can put back together with my rebuild kit fingers crossed
Great video, thanks man!
Greatly appreciate your video it gave me the confidence to rebuild mine instead of speeding undo money on a new one. Please post more if you can and thanks again. 3rd gen new old owner again.
Great video, I’m going to be trying this on my k5 blazer soon. Hopefully it helps it run smoother.
Very good video, excellent job. Thanks for sharing you experience
Very good video. Straight forward.
Awesome job buddy and to the point
Wow. You make it look easy. Thank you. Hopefully I can rebuild my '95 Chevy truck.
You can I’m 21 and can do it I know you can
Excellent video!!! Thanks.
Very good video, Wish I saw this before I rebuilt my TBI 1990 chevy 3500 series truck. Now I will go back and do it right.....
Very well presented. Thank you. Check throttle shaft for slop. Too much up and down play and you have a vacuum leak.
Thanks . It is going to be very helpfull to rebuild my 2.8 s10 Blazer :D
Awesome video. Thank you.
Very good video by the way. Thank you.
Very good presentation...thumbs up!
Great job buddy 😀
Awesome video thank you so much!
Great vid, thanks for your time and effort to make it.
Your Fuel line is dripping because fuel tank has pressure in it from temperature change. Crack the gas cap to alleviate pressure. Excellent video, had no idea there way an idle air control valve learn procedure.
Ok did the job today and their were a couple of problems but I got'er done and my truck runs super now. 454SS so there were a few thigs different. The Pressure regulator is a bitch to hold it together and screw it together, gasket gets all wonkey and produced a leak the fist time. Re did it and alls good
Thanks for the video
While you have it apart, take a little extra time to blend and polish the throats and add a spacer to the injector tower. The airflow can be improved by a fair amount, along with throttle response and fuel atomization by doing so. An adjustable fuel pressure regulator doesn't hurt either, makes them much more tuneable. Doesn't hurt to pop the cover off the idle screw for further tuning if you're getting a little aggressive with your timing. Nicely done Sir! This vid is a perfect example of no-nonsense, get it done, it's easier than it looks kind of wrenching.
yes polishing the throats make a big difference along with a small timing advance on a tired engine.
Holy shit dude. Looks great! Nice work!! one of the best third gen videos i've seen! Also, NOONE DOES TBI VIDEOS! So thank you so much!! Everyone is into their TPI's, TBI is where its at! (not really, but TBI's are cool too!) THAKNS AGAIN !!
can feces be holy?
Thank you. I have a 93 c1500 giving me problems. Think a entire TBI rebuild is what it needs.
Super helpful! Thank you!
Excelente video...!!
Great video, I'm rebuilding my TB on my 91 Firebird right now, 2 things I noticed, you forgot to reinstall the dust seal gasket on the fuel pressure regulator, and to avoid gas leaking out your gas lines, pull the fuse for the fuel pump and crank it over until no fuel is coming out of the injectors. Thanks for the help!! All your videos are very helpful!!
often time i miss filming a small step here and there.
@@3rdGenGuy again thank you so much for the help. Without your video I wouldn't have been able to rebuild it correctly. Got it running today
Amazing Work!!!
very thorough
This was very helpful thank you
Excellent video....