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'78 Brat keeps stalling


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#1 YellowSub

YellowSub

    USMB is life!

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Posted 09 December 2008 - 01:46 AM

A couple of weeks ago, my Brat started having problems running. It would start fine, go about 20 feet, then die. My husband found that the points were burned up. We replaced the condensor and points, cleaned and regapped the plugs, and adjusted the timing. It ran great for a week, then started stalling again. Once again the points were burned up. Replaced everything again, checked voltage. A week later it started again. We've replaced the condensor and points, but now it also looks like the choke is getting closed and it can't warm up. Any ideas?

#2 Skip

Skip

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Posted 10 December 2008 - 08:19 PM

The points issue sound like
1) Bad condersor (since you changed that maybe rule it out)
2) Ballast resistor by passed or shorted.
It's mounted on the coil.
If it is by passed too much voltage is put on the points.
Here is a picture
Posted Image
PS change the dist to an electronic one
See my post "dist conversion point to electronic"


The choke issue.
I just had to change (repair) the heating coil in the
choke housing on one of my 78 Brats.
If it does not heat the bi-metal choke spring
the choke stays closed.

My heating coil was broken right next to the connection screw.

I can do pictures of this problem.
If you want me to please ask.

EZ test
remove air filter housing
plug vacuum lines
start engine
wait two minutes
feel choke control housing
should be very warm to the touch
and choke should be open.

Hope this helps




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