Quote from: Randys01 on 23 August 2024, 09:28 PMFootnote.,. I see yours is a K jetronic...1977?
In all probability the excessive fuel consumption can be sheeted home to fuel pressure issues. There's plenty of potential culprits that can contribute to this problem.
But in order to make a start you must have a CIS fuel injection test pressure gauge.
I have found after many years of frigging around with this system that the only way to get them sorted out after 40 years of neglect is to start at square one.
Plenty has been written about diagnosis/techniques etc but I reckon there's only 4 basic tests.
- what is the fuel volume delivery?
- what is the cold control pressure?
- what is the hot control pressure?
- is the aux air valve working properly?
Taking in the broader picture......
Does the car start readily and assume a fast idle for the first 3-4 minutes?
Does it revert to a smooth idle around 750 rpm when warm?
Does it have plenty of power?
Does it blow black smoke under power?
Something in those few litmus tests will not present as correct. .home in on that.
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