73 Newport engine cranks really slow

[Lordofthepings777]

Bought this Newport about 1 week ago, and have yet to get it to start. Guy said he had it running, and he showed me it turns over when I bought it.

Now- a week later I have yet to hear it start. I’m wondering if it’s a starter issue, gas issue, wiring issue, or starter relay issue?

To give a description of what it’s doing, it only sometimes cranks (even after bypassing the relay), and when it does it’s quite slow.

I’m currently pouring fuel directly into the carb to try and start it.

The starter looks brand new, and I’m pretty confident the guy just put it in. Maybe it’s an old wire issue?

Maybe I’m missing something, so I made this post in hopes to see if anybody had an idea of what could be causing this, or if it’s an obvious starter issue. Let me know, any help is appreciated!

 

[Big_John]

Based on that picture alone, my bet is some bad wiring.

 

[carguy300]

There are alot of wiring add ons, without hearing it turn over, kind of hard to say. I would pour a whole lot of gas down the carb! I have used shot of lubricated ether before.

 

[carguy300]

Would not!!!! Pour a lot of gas in carb.

 

[wyrmrider]

ck your starter ground
do not wash down your cylinder walls with gas down the carb
eather will not hurt low compression motor but do not do it with earlier motors
then start with the usual suspects dist in right, spark plug wires in correct order etc

 

[CBODY67]

Does it turn over faster with all of the spark plugs out of it? Should not need welding cable for the started lead.

 

[57fury440]

Is the timing set correctly? A full charge on the battery? What about the ground to the starter. Does it kick at all or just a really slow crank?

 

[57fury440]

Is the ground cable on the battery connected to the engine block? It is hard to tell in that picture. I only see it going to the fender.

 

[Jakter]

Positive cable looks blackened by the fender.

 

[66 Monaco 500 365]

You didn't mention the battery voltage. have you tried to jump it? I would guess '73 has electronic ignition, they won't spark if the motor is turning very slowly, like points do.

 

[CBODY67]

You didn't mention the battery voltage. have you tried to jump it? I would guess '73 has electronic ignition, they won't spark if the motor is turning very slowly, like points do.

ALL electronic boxes/modules have a low voltage threshhold that must be met before sparks happen. Some lower than others, but usually from 5.5V-11V, with the Chrysler orange box being the highest. Which makes a HOT battery a necessity for best performance.

CBODY67

 

['66 Fury I]

Pouring gas down the carb can wash down the cylinder walls and lead to slow cranking. Learned this many years ago on a 383 in my '63 Windsor. After spending many hours and dollars, I squirted a bit of 10W30 in each cylinder, reinstalled the plugs and the engine started. That is the short version. Lindsay