Quote:
Originally posted by bd1308
then why have the time function in the sensor at all?
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Someone else may have answered this already...
The "time" part of the function was to prevent flooding when cranking for a long time. This may be related to the "hot start flooding" problem that's the topic of the thread.
The "hot start flooding" problem seems to be fairly common with D-Jet 914's. As best as I can tell, the problem is due to either a leaky CSV, or more likely, leaky injectors. What I think happens is that after the engine is run to operating temperature, then shut off briefly (e.g. go into the store for 10 minutes), the fuel loop remains pressurized. This is intentional, to enable rapid restarting. However, if you have one or more leaky injectors, the fuel in the loop dribbles out into the cylinders, and you have a very rich condition on start.
Note that the problem may also be due to an ECU design flaw, though I've never figured out how it happens.
The "fix" for the problem is to check everything out, find the flooding source and replace it. If that doesn't help, and the problem happens again, there's another thing to try. Before turning the key, depress the pedal to the floor, and hold it there. Now, turn the key, keep the pedal on the floor, and crank until it starts. By depressing the pedal before turning the key, you avoid injecting additional fuel into the intake ports (from the action of the throttle switch), and by holding pedal down you increase the amount of air available for the flooded engine to start with. Old trick you learn with a flooded carb (and sticking a screwdriver handle into the automatic choke to hold it open, too).