Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

first rebuild

Thread Tools
 
Search this Thread
 
Old 04-18-2015, 09:22 PM
  #1  
Member
Thread Starter
 
sgp0511's Avatar
 
Join Date: Oct 2014
Posts: 125
Likes: 0
Received 5 Likes on 3 Posts
Car: 1988 Firebird
Engine: 305
Transmission: 700r4
first rebuild

So I rebuilt my quadrajet today all went smooth except I'm confused about my power piston when looking at rebuilding videos online I see all the videos with quadrsjets only have the one power piston with the two metering rods hanging off of it. In the videos they say to insert the spring into the piston body like the piston should be hollow, well the piston I have is solid no hole on the bottom for the spring to go into. Second thing is looking from the front of the carb you have your needle valve for the float then a circular hole then a second circular hole where the power piston with the 2 metering rods go into my problem is in the first hole there was a piston with a spring and one metering rod in there. Looking multiple places online I did not see a setup like this. Is that second power piston and metering rod even supposed to be there? Also the plastic retaining clips on top of the pistons were cracked and corroded and my rebuild kit included rubber retaining clips. I don't see how this is supposed to hold the piston down in place. Sorry no pictures at this time as I am at work
Old 04-18-2015, 09:58 PM
  #2  
Member
Thread Starter
 
sgp0511's Avatar
 
Join Date: Oct 2014
Posts: 125
Likes: 0
Received 5 Likes on 3 Posts
Car: 1988 Firebird
Engine: 305
Transmission: 700r4
Re: first rebuild



The yellow arrow is where the power valve with the two metering rods go and red arrow is where a second power valve is the hole is hollow like the top hole doesn't have anything in it like this pic as I found this on internet so my question is why do I have 2 power valves?
Old 04-19-2015, 04:39 PM
  #3  
Member
Thread Starter
 
sgp0511's Avatar
 
Join Date: Oct 2014
Posts: 125
Likes: 0
Received 5 Likes on 3 Posts
Car: 1988 Firebird
Engine: 305
Transmission: 700r4
Re: first rebuild



This is what I was talking about, but got her running today just need to do some fine tuning
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
sleprock
Interior Parts Wanted
2
10-03-2015 11:01 PM
hartsmike
Engine Swap
11
10-02-2015 07:11 AM
Derrick86
Transmissions and Drivetrain
7
10-01-2015 05:12 AM
Aaronv808
Members Firebirds
9
09-30-2015 12:55 PM
3.8TransAM
NW Indiana and South Chicago Suburb
1
09-27-2015 08:37 PM



Quick Reply: first rebuild



All times are GMT -5. The time now is 05:02 AM.