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Re: No power on hills 216.
GradyB #1423581 Fri Sep 10 2021 08:52 PM
Joined: Aug 2018
Posts: 615
2
'Bolter
GradyB
Given everything you already tried
And the symptoms you described
I suggest you get a new coil
Either 6v keeping the resistor or a 12v version
Your symptoms follow a weak coil
And if you ran that coil too hard on 12v the internal insulation starts to break down and the output gradually shorts out internally so it became a weak coil
It takes more voltage to get a spark through dense air and fuel mixtures so that could explain why a weak coil works at idle but when you dump more air and fuel into the pistons the required voltage to get spark is more demanding and suddenly you loose spark
Oxygen alone is a good insulator so are hydrocarbons
You can draw a spark 10x longer through pure nitrogen vs oxygen
Something to consider.
-s

Re: No power on hills 216.
GradyB #1423582 Fri Sep 10 2021 09:05 PM
Joined: Aug 2019
Posts: 73
G
GradyB Offline OP
'Bolter
It is a 12 volt coil. Just checked volts when running. 9.4 going into coil. 6.4 going out at idle. Goes up to above 9 as you give it more gas. Is that enough voltage? Had wonderful wife helping.

Re: No power on hills 216.
GradyB #1423584 Fri Sep 10 2021 09:21 PM
Joined: Apr 2005
Posts: 10,345
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Have you put a timing light on it? Checked the vacuum advance? Have you put a Dwell Meter on it to check for proper points settings? Have you done a compression test? All these tests will help diagnose the problem so you can fix it.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2) “Emily”
‘39 Dodge Businessmans Coupe “Clarence”



"I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)

Re: No power on hills 216.
GradyB #1423586 Fri Sep 10 2021 09:30 PM
Joined: Aug 2019
Posts: 73
G
GradyB Offline OP
'Bolter
Checked timing. Ok. Vacumn advance moves distributer when you step on gas. I don't have dwell meter,,, so... I will do compression check and see what that tells me. Supposed to be a rebuilt motor with about 4000 miles on it when I got it. Thanks for the information.

Re: No power on hills 216.
GradyB #1423587 Fri Sep 10 2021 09:48 PM
Joined: Aug 2018
Posts: 615
2
'Bolter
I was referring to the high output side of the coil
What goes to distributor and spark plugs
That should be about 30000v but coils get weak and it drops gradually not just instant 0v your coil could be making say 15000v for instance and that would be no good
Swapping in a good coil is easier than testing it correctly which is not trivial and must be done loaded with special tools
If it doesn’t help at all you can put your old coil back on and keep the new one as a spare part which you will eventually need anyway.
-s

Re: No power on hills 216.
GradyB #1423601 Sat Sep 11 2021 01:06 AM
Joined: Aug 2019
Posts: 73
G
GradyB Offline OP
'Bolter
Changed coil no different. Checked fuel pump. Ok. Got looking at carb and took cover off of the top, ( Carter w-1) and found the little clip that holds the metering rod was missing. Metering rod was not connected. Put all back together with original coil. Test drove and now it will pull the hill! Need to readjust timing and get a dwell meter to get it better. I hope! Thanks everyone for all the help. You. Guys are the best.

Re: No power on hills 216.
GradyB #1423608 Sat Sep 11 2021 01:46 AM
Joined: Aug 2018
Posts: 615
2
'Bolter
that's awesome, its great to know you solved a problem! i bet it feels good
get that engine running smooth and post an update! with photos smile
-s

Re: No power on hills 216.
2ManyTrucks #1423631 Sat Sep 11 2021 01:22 PM
Joined: Aug 2019
Posts: 73
G
GradyB Offline OP
'Bolter
Made it to show this morning. She ran good. Thanks again all. Gonna fry to add picture. If I can figure it out.

Re: No power on hills 216.
GradyB #1423632 Sat Sep 11 2021 01:47 PM
Joined: Apr 2005
Posts: 10,345
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Photo posting instructions are in the left margin of every page. Unless you’re using a cellphone, then your on your own.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2) “Emily”
‘39 Dodge Businessmans Coupe “Clarence”



"I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)

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