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Discussion Starter · #1 ·
Hi all,
Is there remain pressurized fuel in fuel rail after engine stop running
thanks
 

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Yes, initially there is fuel pressure in the rail when you switch off but this may quickly decay. At idle you may be generating anything from 15 to 20 MPa fuel pressure, a worn injector can cause a leak or you may have a leaking pressure switch seal. If you're talking about it affecting start-up, it shouldn't affect things too much you probably need less than that to start the engine.
 

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Discussion Starter · #3 ·
Yes, initially there is fuel pressure in the rail when you switch off but this may quickly decay. At idle you may be generating anything from 15 to 20 MPa fuel pressure, a worn injector can cause a leak or you may have a leaking pressure switch seal. If you're talking about it affecting start-up, it shouldn't affect things too much you probably need less than that to start the engine.
thanks Victor for your reply
 
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