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Exhaust "popping" on overrun?
#18
This weekend I have made some temporary repairs to an original DK4a distributor and removed the electronic unit in order to make a comparison.

On fitting the DK4 and altering the wiring to suit, I found one of the connectors on the relatively new coil ( fitted at the same time as the electronic dizzy ) to be cracked.
An attempt to rescue this connection caused irreparable damage and resulted in an original Lucas coil being re fitted.

Once roughly timed the first journey out was a revelation, and once the timing had been tweaked to prevent knocking it was genuinely like driving a different car. No more popping on overrun and a significant increase in power / smoothness.

Bearing in mind the DK4 still needs work to make it perfect and the timing may not be spot on, I suspect that it may have been the coil at fault coupled with a too rapid advance curve on the electronic distributer, although I am only guessing.

On inspecting the coil, the plastic around the connector appears to be very brittle, almost as if it has been heating up too much.

I intend to replace the worn DK4 parts and stick with the original set up.
These A7s certainly prevent us getting bored !
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Messages In This Thread
Exhaust "popping" on overrun? - by Joe eck - 07-05-2019, 06:48 PM
RE: Exhaust "popping" on overrun? - by Joe eck - 07-05-2019, 07:15 PM
RE: Exhaust "popping" on overrun? - by Hedd_Jones - 07-05-2019, 07:25 PM
RE: Exhaust "popping" on overrun? - by Hedd_Jones - 07-05-2019, 10:44 PM
RE: Exhaust "popping" on overrun? - by Hedd_Jones - 08-05-2019, 02:45 PM
RE: Exhaust "popping" on overrun? - by Joe eck - 08-05-2019, 07:12 PM
RE: Exhaust "popping" on overrun? - by Joe eck - 08-05-2019, 07:35 PM
RE: Exhaust "popping" on overrun? - by Hedd_Jones - 08-05-2019, 08:00 PM
RE: Exhaust "popping" on overrun? - by Bob Culver - 08-05-2019, 09:46 PM
RE: Exhaust "popping" on overrun? - by Joe eck - 12-05-2019, 07:38 PM
RE: Exhaust "popping" on overrun? - by Colin Reed - 12-05-2019, 09:26 PM
RE: Exhaust "popping" on overrun? - by Joe eck - 13-05-2019, 06:51 PM
RE: Exhaust "popping" on overrun? - by Chris KC - 13-05-2019, 07:16 PM
RE: Exhaust "popping" on overrun? - by Chris KC - 13-05-2019, 09:07 PM

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