I put a short length of 5/16" fuel hose inside the hose coming from the valve in the head in my 164E to slow the cold idle. I suggest 1/4" you, put a 2" length in and put a ziptie around it to stop the air going around the outside. I never bothered with the cold start injector, because it's never sub 0°C here, but I would have thought one pump of the gas when being cranked would be enough to replace the colds start injector, caution, very easy to flood the engine pumping the D-Jet throttle switch.

The pressure dropping off quick isn't a serious problem, could be either location. Just turn the key off and on 2 or 3 times to prime it before cranking, maybe try a cleaning product?

The cold start injector is powered directly by a wire from the statrer motor via the thermal timer. It's the same for D & K-Jet.





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69 142S Overdrive + 69 164S Manual