Friday 7 October 2011

Changing 1985 K5 Blazer from carburetor to throttle body injected?

Changing 1985 K5 Blazer from carburetor to throttle body injected

Question Details: I have a K5 blazer that I am trying to change over from carburetor to throttle body injected. I let someone %26quot;try%26quot; and do this for me and they messed it up really bad. I don't know what to do now. I can' t get it started and no one seems to know anything about it. I have went through three distributors and they keep getting burned up. I have changed the caps and rotors. I have changed spark plugs a lot and they keep filling up with gas. It has a 350 in it. I have grounded the fuel injectors. Any input or help would be very helpful. Also if anyone knows of a book that I can buy, that would be great.Changing 1985 K5 Blazer from carburetor to throttle body injected?Unless you are planning to change the wiring then forget it...

Throttle body is fuel injected and is controlled by a computer so you will have to have all the sensors,computer intake,electronic ignition and a whole lot of time and money... My suggestion is to go to WWW.holley.com or to a speed shop and check on the cost of a aftermarket fuel injection system that comes with a completed package to provide you with the same results without all the headaches...
Changing 1985 K5 Blazer from carburetor to throttle body injected?
do you have any idea what you just asked why would you spend that kind of time and money buy an after market carb the logistics of this switch make little to no sense
Changing 1985 K5 Blazer from carburetor to throttle body injected?
You are going to need to know if the friend changed the distributor when he changed the fuel injection. I dont know why he would even bother with it, as you could bolt a holley projection throttle injection unit on there and maintain a stock distributor. The spark plugs should also stay stock, but I would get new silicone wires and a new accell ignition coil. Some cars use a resistor and coil trigger wire for the ignition coil, these things need to be correct or you could have issues.



I would not attempt to bolt on a used GM fuel injection assembly that has not been fully tested and warrantied, and you need to study the install directions and wiring schematics carefully for the injection system and ignition system too.



If you have done all these steps which could take a while, and still come up short, I would take it into a reputable mechanic and ask them for a diagnosis on it.