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.

650 mighty demon bad idle

Reply Subscribe

Search this Thread

Old

07-17-2007, 10:48 AM

#1

Supreme Member

Thread Starter

Join Date: Apr 2006

Location: Rochester NY

Posts: 1,801

Received 21 Likes on 19 Posts

Car: 1984 z28

Engine: 355

Transmission: 700r4

Axle/Gears: Moser 9" 4.11

650 mighty demon bad idle

I have a 650 mighty demon on my 355 and he idle is very weird. I have the carb setup as the instructions say and it will only idle at about 500-600rpms in park. But if I unplug the brake booster from the back of the carb it idles at 900rpms like its suppose to. What am I doing wrong??

84 z28 is offline

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

1992 camaro 305 v8 TBI idles very high and shifts at high idles

db057

TBI

34

01-21-2023 01:13 AM

Chronicles of a 9 Second Trans Am... Final Chapter

Street Lethal

Power Adders

634

04-30-2019 12:14 PM

Mystery engine noise

xxx3man`

Tech / General Engine

11

09-23-2015 10:37 PM

Bad fuel pressure regulator AND leak in the tank?

mike_c

TPI

4

08-27-2015 04:32 PM

Carb Raffle Holley, Edelbrock, or Demon

BlackphantomZ28

Engine/Drivetrain/Suspension Parts for Sale

0

08-22-2015 01:00 PM

355, 650, carb, chevy, demon, idle, mighty, poor, terrible, tuning, wont

Thread Tools

Search this Thread

Show Printable Version

Show Printable Version

Email this Page

Email this Page

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 12:36 PM.