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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
The CIS or k-jetronic TTS has an internal thermostat that heats up and should disable it after cranking the starter motor for more than a few seconds so the motor is not flooded.
Sounds like that function is not working on yours and it may be spraying fuel continuously every time the starter motor is cranked. If this is happening the motor will be flooded with way too much fuel after 3 to 5 seconds of starter motor cranking.

A simple low cost work around if you don't want to buy an expensive new TTS is just disconnect it from the starter motor power completely and wire the CSV to a generic engine starter button from an auto parts store. (Some of those are cast aluminum and look pretty nice and some have a water proof rubber cover over the button so they can be installed in boats or equipment that get rained on regularly)

Then to start the motor when it's cold hold down the generic starter motor button for a second or two while cranking the starter motor and it should start.
If the motor is warm do not touch the new CSV button you installed because the motor does not need the extra fuel to start.

When I worked at a street car shop on BMW's in the eightees we used to do this on CIS BMW 320i's when the TTS went bad and the customer didn't want to spend the money on a new one.

FWIW, you could also install the manual CSV activation button in the spoke of an after market steering wheel and hold it down with your thumb for more fuel injected into the intake manifold under the throttle body during high rpms and boost if the motor can use more fuel.

Last edited by JFairman; 10-15-2016 at 09:05 PM..
Old 10-15-2016, 09:47 AM
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