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Perplexing (k-jet) starting anomaly 700 1989

posted by  Nmaslan on  Mon Nov 30 01:13 CST 2009
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last visit: Fri Dec 30 18:34 CST 2011
[RELATED]

Greetings

This is a k-jet on a 740 (non American market). This k-jet has no cat converter nor any O2 sensor.

I'm hoping anyone can give me a guide as to where I should look. I don't have a fuel pressure gauge nor does my mechanic.

Issue is the need for double crank to start the k-jet if the car has sat for less than 36 hours. It will crank away happily without the k-jet firing at all during first attempt. Second crank attempt it'll run at 3rd crank or so.

On the other hand after car has been sitting for more than 36 hours, it'll start right away on the 2nd or 3rd crank!

Basic things such as plugs, plug cables, TB, ignition timing, fuel filter have been checked. Aux air valve clean. Cold start injector not leaking. Things have been replaced over the past few years - in-tank fuel pump and socket filter, all 4 injectors and its seals, fuel accumulator, all vacuum hoses. CO mixture as per spec. Have verified fuel pump no check valve.

Appreciate any advice

Aslan
Malaysia - where the lowest ambient temperature is 25 deg C





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