I'm an old Mustang guy (sorry). Havent worked on anything newer that 1968 or anything without OBDII. My son came home with an 86 Z28. Looking under the hood, It doesn't appear to have the correct carburetor. At idle, a buzzer sounds and the service engine light flashes. Any advice would be truly appreciated



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Right Side

 

The check engine light is on because you do not have a computer controlled carburetor anymore.
The linkage looks like it's from a manual transmission application.
Or you're just missing this stud.
https://m.summitracing.com/parts/edl-8018

 

Because there is no large opening on the TV cable this dead may work instead.
https://m.summitracing.com/parts/edl-8009

 

I am pretty sure that this is not the carb that the car started life with. I found the casting number, 7045202. What is the correct carb for this car?

 

It's from a 75 Chevrolet,



Since somebody changed a non-computer controlled carburetor, they may have swapped out the HEI distributor.if the distributor has a flat for wire plug it's a computer controlled distributor. If it has a vacuum advance then it's for a non-computer controlled application.

 

Thank you all for the help. Ordering the AUTOLINE C9652 from Rock Auto. Pretty sure this is the stock distributor

 

when you get the replacement carb it will have to be adjusted to your motor. pretty simple really with either a dwell meter or scan tool. let us know when you get there and we can help.

 

It's hard to tell if that's the stock distributor from the picture, if it's from another vehicle the vacuum advance is on the right-hand side it's not pictured. If it's the computer controlled one the connector will be on the right-hand side.

 

I dont think thats a CC Dist. Just looks like a big cap HEI as the pigtails indicate that its a simple power and tach hookup. Cant see the vac advance can though and thats def not a Computer Controlled Quadrajet.

Appears that someone has gone through a Computer Divorce at some point

 

That looks like the original dist. I don't see a vac adv cam on it.

Looks like somebody just stuck a non-computer carb on it and left the computer dist there. A recipe for lots of weird problems and generally running like crap.

That car is hacked up pretty good... what a shame people do stuff like that. Fortunately it looks like most of the parts are at least still there.

9652 should do the trick for the carb. Shouldn't need too terribly much setup once you get it properly installed. Expect trouble with vacuum lines and decrepit wiring, nothing insurmountable but it might be tedious. For example I notice in the one pic, at the rear pass side, the MAP sensor vac line is all conflated with a bunch of other vac lines. You'll need one of these https://www.thirdgen.org/forums/tech...iagrams-i.html but don't worry too much about what year, they're all pretty much the same. Find the closest one you can and hook them all back up like they belong. Looks like one of the ones in post #27 should get you going. The vac ports on the carb all have a little letter cast into the metal next to them, might want to identify them all before you put the new one on to avoid confusion later.

If the dist works (i.e. if the car runs) let it be for the time being. One thing at a time. Get the carb on and working first.

 

Check the numbers, order the rebuild kit, pull the carb, soak in "metal rescue" for an hour or so (dont know what it is? google it, its a miracle product)

Disassemble (30 mins)
Clean (anywhere from 30 mins to 24 hours if you soak it in a carb solution)
Ensure proper workings (replace plastic cam on the throttle door is a good idea regardless)
install kit and reassemble

The actual work involved is about an hour and a half tops.

Meanwhile order a cheap big cap vac advance HEI for a small block chev off of ebay ($40-$50)

slot it in an away you go

then you can start disconnecting all the useless sensors and wiring