Help 351 won't fire?
#1
Help 351 won't fire?
I have a 351 that won't fire, it's got a new carb, fuel lines, cap, wires, plugs, new brain box on the drivers side. I pulled it out of the garage and it died now won't even try to start on starting fluid? Don't have any help to check spark but I'm assuming that's what it is. I replaced the brain box with no luck?m
#2
#3
#5
Ya it's getting fuel, also has new fuel lines and pump. I can see it dumping in the carb. I let it rip with starting fluid without hitting a beat. Bolted the box down and put a new solenoid on it here a second ago and found a blown fuse for eng sol. ? Don't have any of those long ones so I made a shorty work but still no luck
#7
Trending Topics
#9
#10
#11
So every plug has spark all the way to it. I did figure out one very odd thing... it starts now.... but only with the plug out and grounded? I put the plug back in and won't start. Pull a different one and ground it on the carb and it starts... I did notice it only starts when you let off the key also.. blowing my mind right now
#12
Make sure that you engine block is grounded to the body. There should be a ground strap that goes from the back of the intake manifold, straight back to the firewall.
The stock strap should look like this one.
Attachment 206322
On my 79 I have the engine grounded to the body, and to the frame both.
Unk Bob
The stock strap should look like this one.
Attachment 206322
On my 79 I have the engine grounded to the body, and to the frame both.
Unk Bob
#13
Bad ignition switch can cause this iirc, someone will remember better than I. Symptom is only sparks when going from "Start" to "Run". Aggravating I bet.
Keep in mind that not just any ole' spark will do. It has to be a fat, healthy spark. Orange or reddish won't work, it won't jump the gap when actually installed in the engine and under compression.
An engine that won't start is real rough on all the components, solenoid, battery, starter. If it does finally start, it will then torture the alternator. Put the battery on a charger at let it cook at least overnight.
Keep in mind that not just any ole' spark will do. It has to be a fat, healthy spark. Orange or reddish won't work, it won't jump the gap when actually installed in the engine and under compression.
An engine that won't start is real rough on all the components, solenoid, battery, starter. If it does finally start, it will then torture the alternator. Put the battery on a charger at let it cook at least overnight.
#14
So the ground was bad between the block and firewall so I replaced it with no luck, then started searching for a ground for the frame and never found one. So I ran a ground from the frame to the intake, firewall to the intake, and another off the battery to the intake alone with the one going to the bloco. Still no luck really thought you were on to something haha. I'm going to run a direct ground for the coil?
#15