Points Gap-GT550

jkevinlilly · Post by **jkevinlilly** » Tue May 11, 2010 3:36 pm

Does anybody have the points gap setting for a 76 GT550?? I can't find my D#$m repair manual disk.

Kevin

Post by **Suzsmokeyallan** » Tue May 11, 2010 5:17 pm

Kevin all were 0.35mm, however i prefer to use 0.38mm since they tend to close in a bit when you draw the screws.

jkevinlilly · Post by **jkevinlilly** » Tue May 11, 2010 6:34 pm

Thanks Allen

Kevin

jkevinlilly · Post by **jkevinlilly** » Tue May 11, 2010 6:55 pm

That worked. Just got my 550 running for the first time in 2 years. At least on the two outside cylinders, need a new set of points for the middle.

Kevin

Post by **Suzsmokeyallan** » Tue May 11, 2010 6:58 pm

Great news so it might make it to the gap then.

jkevinlilly · Post by **jkevinlilly** » Tue May 11, 2010 7:04 pm

That's the plan. I drained the old gas, adjusted a carb float, installed a new petcock, battery, and two sets of points in the last couple days. And finally it started.

At least on two cylinders.

Kevin

jkevinlilly · Post by **jkevinlilly** » Wed May 12, 2010 5:04 pm

After sleeping on it overnight, this evening I pulled the center plug, hooked it back up the plug to wire, and turned the engine over. Not a points issue, got a decent spark.

Appears that almost two years of sitting has caused a problem with gas getting through the middle carb and into the that cylinder.

Looks like I will be pulling the carbs this weekend, and tearing into the middle one..

Kevin

Post by **Suzsmokeyallan** » Wed May 12, 2010 5:48 pm

Sounds like a blocked pilot jet is possible on that centre carb, so its worth checking it first to see if its clear.
Nows a good time to check them all and clean them up on the overhaul as well.

jkevinlilly · Post by **jkevinlilly** » Wed May 12, 2010 6:54 pm

I'll start there, and see where it leads me.

By the way, found my repair manual disc. Gotta get organized one of these days.

Kevin

jkevinlilly · Post by **jkevinlilly** » Thu May 13, 2010 5:29 pm

Soooo, I could not wait till the weekend to tackle this problem.

Allen wins the Prize!!

Now I just gotta figure out what it is.

Main jet on the middle carb wasn't just plugged solid. It was buried in the crud in the bottom of the carb bowl.

What was amazing was the left one was partially plugged but not much crud in the bowl. The right was clean as a whistle.

Now next step is to clean the tank good. I know where the crud had to have come from.

By the way, running on all three cylinders now.

Kevin

Post by **Suzsmokeyallan** » Thu May 13, 2010 7:35 pm

Tank cleaning can be done with Evaporust which should get it back to some decent interior finish. Oh and thanks for the prize, so what did i win, when you can get around to it,,LOL