New V8 running on 4?!?!?
#1
Senior Member
Thread Starter
Join Date: Mar 2002
Location: Phoenix, AZ
Posts: 857
Likes: 0
Received 1 Like
on
1 Post
Car: '82 Z28
Engine: 350HO
Transmission: M4
New V8 running on 4?!?!?
Ok, long story so I'll make it short.
Put a new 350 in my friends car that was previously a carb motor. New motor is carb as well.
The new engine seems to only be running on 4 of 8 cylinders.
It only will run at about 70* advanced, and when I pull 4 of the plug wires off as it is running, it continues to run, without any change. Now on a normal motor usually one or two would kill it.
It has compression on all 4 *dead* cylinders. And the valves are all correct (should be anyway).
We are getting spark to all 8 cylinders, and we have changed the wires, and the plugs.
We also just added better ground strap for the motor, so I don't know.
Anyone have any ideas of what the problem could be?
Put a new 350 in my friends car that was previously a carb motor. New motor is carb as well.
The new engine seems to only be running on 4 of 8 cylinders.
It only will run at about 70* advanced, and when I pull 4 of the plug wires off as it is running, it continues to run, without any change. Now on a normal motor usually one or two would kill it.
It has compression on all 4 *dead* cylinders. And the valves are all correct (should be anyway).
We are getting spark to all 8 cylinders, and we have changed the wires, and the plugs.
We also just added better ground strap for the motor, so I don't know.
Anyone have any ideas of what the problem could be?
#2
Supreme Member
iTrader: (2)
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 10,040
Received 394 Likes
on
336 Posts
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
What kind of carb? I've had an edelbrock do that because one float bowl was not getting gasoline due to a stuck needle and seat.
#3
Senior Member
Thread Starter
Join Date: Mar 2002
Location: Phoenix, AZ
Posts: 857
Likes: 0
Received 1 Like
on
1 Post
Car: '82 Z28
Engine: 350HO
Transmission: M4
we thought the same thing. i had an edelbrock 750 which was used. i replaced it with a brand new 750. there was little if any change. please let me know if you have any other suggestions.
Thread
Thread Starter
Forum
Replies
Last Post
Fast355
DFI and ECM
14
12-02-2016 06:33 PM
eightsixseven
Tech / General Engine
1
08-14-2015 03:09 PM