Quote:
Originally Posted by jma0506
It sounds like you're on the right track Andreas and I agree with Pete.
Your CCP being lower than spec will mean you're running overly rich on startup, and depending on your climate, your cold start valve may be firing when cranking creating an overly rich cold state which would make it difficult to start. You should try to get your WUR into spec for the CCP.
As for popping from unburnt fuel, it's possible that your air/fuel mixture for when the car is warmed up is set a little too rich and thus leaving extra unburnt fuel in the exhaust and causing the popping. You should first check for vacuum leaks to ensure you don't have any unmetered air in the CIS system but see if turning your air fuel mixture CCW (lean out) 1/8 or less of a turn at a time and monitor engine running behavior.
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I may try to adjust my wur, slightly. No-one I know and trust for a rebuild locally. And sending it around 1/2 the globe, will be a last resort😅
My warm-mixture is where it can't go any leaner, whithout it being too lean.
I'm in Northern Norway, so plenty of cold startups. No problem starting, it just won't idle, whithout some throttle input for the 1st minute or so.
Will doo my timing propperly, check for exhaust leaks and just maybe get a new set of injectors. Just to be certain they are OK. Not too expencive and i know they are old. I've seen how to test them with jars and such. But not sure I would trust my own findings😅