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D-jet tuning, continued 140-160

posted by  Chris Mullet on  Wed Oct 15 12:56 CST 2008
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last visit: Fri Oct 24 09:08 CST 2014
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"...Turning it down produced a barely perceptible hiccup off the line...."

It may be a dirty or worn throttle position switch, which also acts as a sort of "accelerator pump" in the d-jet system, and possibly the high pressure regulator setting was compensating for it??? (I'm reaching here.)

Also, how about the ignition components. Years ago I had a 72 144 d-jet and I found that plug wires seemed to fail more often than the plugs, points, condensor, or cap.

How does it idle?

You might also pull one plug wire at a time while it's idling and look for a weak cylinder.

Possibly a burnt valve?? How's the compression?

Just some food for thought. Good luck with it.





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New D-jet tuning, continued [140-160]
posted by  bmessina  on Wed Oct 15 11:20 CST 2008 >


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