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Old 05-06-2008, 02:30 PM
ctaylor738 ctaylor738 is offline
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Join Date: Apr 2000
Location: Falls Church, VA
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Does the length of time the car sits affect the time it takes to start? The classic accumulator or other leak-down is that the longer it sits, the longer you have to crank, to give the system enough time to build enough pressure to open the injectors.

If the time to start is independent of the time it sits, then I would suspect the CSV or o-ring. Either could cause an excessive amount of fuel at start which you are offsetting by opening the throttle and giving the poor thing some air.

BTW, this does not have a "fuel rail." It has eight individual lines from the fuel distributor. So I am not sure what gaskets you are talking about. You don't need to mess with the injectors to get the valve covers off.

It would help to know what on-off ratio you are getting (lots of posts), as well as the control pressure, and how long it holds pressure after you shut the engine off.

Another thing that occurs to me is that the altitude/less oxygen in the air may be causing the O2 sensor to send a low voltage signal, which would cause the lambda controller to richen the mix. I'm not sure how you would compensate for that in early K-Jet. Another reason to see what the on/off ratio is doing.
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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe

Last edited by ctaylor738; 05-06-2008 at 02:44 PM.
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