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Dead Parrot · 05-20-2019, 06:14 PM

Assuming HEI dizzy, make sure your gap is .045. IIRC - I am using the equivalent to the R44TS in my 75. OEM spec was R44TX with a .065 gap. Later years dropped to the now HEI standard of .045.

The newer gas does seem to leave buildup in the carbs faster then the older gas did. Might be worth running a batch of your favorite carb cleaner through them.

Might be a simple as making a point to have lunch at an eating place that is 50 or so miles away as a reason to get them out on the highway at speed.

05-20-2019, 06:14 PM	#8
Dead Parrot Registered User Join Date: Aug 2012 Location: Oklahoma City, OK Posts: 2,486	Re: Spark plugs and gas Assuming HEI dizzy, make sure your gap is .045. IIRC - I am using the equivalent to the R44TS in my 75. OEM spec was R44TX with a .065 gap. Later years dropped to the now HEI standard of .045. The newer gas does seem to leave buildup in the carbs faster then the older gas did. Might be worth running a batch of your favorite carb cleaner through them. Might be a simple as making a point to have lunch at an eating place that is 50 or so miles away as a reason to get them out on the highway at speed.