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#16
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what are your system pressures and rest pressures?
Is this an after market fuel pump or OEM
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Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
#17
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I have 2 new Magnetti Marelli pumps.System pressure 6.4 bar, Lower chamber pressure 6 bar. Pressure drops to 3.3 bar after stoping the fuel pumps.Fuel flow was also tested, 1 liter in 40 seconds.
Thanks |
#18
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Did you replace the engine temperature sensor .This item helps to switch the cold start system on .It sends a message to the ecu to say yes i am cold so i need more rich fuel.But if the sensor is faulty can tell the ecu i am hot and at normal temp so i need lean fuel to run.
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#19
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Cold start injector receives signal, and also cold start injector is working good, that is why I exclude the coolant temperature sensors.Also Idle air valve is working.
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#20
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The engine temp sensor shouldn't have anything to do with this issue since it's still running poorly when warm!
__________________
Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#21
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The day after tommorow I will receive the intake gaskets and I will put back the intake on engine.But until then, I am still affraid that this small leak that I have found, is not the source of my problem.What do you think?what else can be?
for me is a little bit crazy, since I have fuel, I have air, I have spark, but engine still not running, only after I help it with ISO Octane for 5 seconds... |
#22
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You may have air and spark, but you have the incorrect *AMOUNT* of fuel entering the cylinders.
__________________
Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#23
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If sensor is stuck on cold start then it will richen the mixture up , so bad hot starts only . The ecu gets the information from the sensor .
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#24
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Except that the OP has already tested the CSI and found it operating.
__________________
Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#25
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Quote:
any opinions ? |
#26
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Before getting carried away adjusting things...
Has the engine EVER run properly since you've owned the car? Looking back in the history of this thread, it appears you had some operating problems due to leaks, then had the engine overhauled. You haven't said if it ever ran right post-overhaul. I'm assuming you farmed out the fuel distributor for rebuild? If so, was it ever set back up and calibrated on the car? Control pressures checked? If they are off, it can certainly throw off the mixture.
__________________
Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#27
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the engine was working ok before overhaulin.Fuel distributor was remanufactured by Bosch 1 year before I bought the car.I haven;t modify anything at the fuel distributor.Just tryed to reach a proper mixture.
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#28
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Since overhauling, has the engine ever run properly?
If so, did this cold start issue slowly occur, or did it simply show up one day?
__________________
Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#29
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thats after overhaulin.Engine never run properly
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#30
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Have changed the intake gaskets.No too much improvement.Still no cold start without spray.After, I tried to adjust the CO screw as much as will start easy at cold.It is ok, but a lot of white smoke, and the idle it is a little bit erratic, and it have a slow acceleration when I press the throttle linkage.Also, the economy needle stays at 1/3 from minimum, at idle.The idle speed is at 700rpm.When I accelerate it to 1000 rpm, the economy needle is very near to minimum.Any idea what to do next?
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