HOT STAR ISSUES, LOOKING FOR REAL SOLUTIONS.
HOT STAR ISSUES, LOOKING FOR REAL SOLUTIONS.
I am sure more than one of you have had an HOT START ISSUE with you M5 S-38 motor. For me its been a hit or miss issue for years.
Please I seeking real solutions not speculations. I need to see if anyone here has had this issue and was able to fix it with no more issues.
Just about everything has been replaced during my restoration 4 yrs ago. All the stuff that matters that can relate to a hot start issue
Crank Sensors
fuel injuectors
Plugs/ wires and cap & rotor
Fuel pump Both, relays
Thremo time switch
New fuel filter/ fuel lines/ Pressure regulator
Ignition coil/ plug wires.
starter/ new battery
Not replaced was the fuel injection ressure sensor not sure if they go bad?
Is there something I am over looking? Please any help would be great
BMWMotorsports1@aol.com
Thats my Email
Please I seeking real solutions not speculations. I need to see if anyone here has had this issue and was able to fix it with no more issues.
Just about everything has been replaced during my restoration 4 yrs ago. All the stuff that matters that can relate to a hot start issue
Crank Sensors
fuel injuectors
Plugs/ wires and cap & rotor
Fuel pump Both, relays
Thremo time switch
New fuel filter/ fuel lines/ Pressure regulator
Ignition coil/ plug wires.
starter/ new battery
Not replaced was the fuel injection ressure sensor not sure if they go bad?
Is there something I am over looking? Please any help would be great
BMWMotorsports1@aol.com
Thats my Email
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Re: HOT STAR ISSUES, LOOKING FOR REAL SOLUTIONS.
Are you serious? Do you really think anyone here can definitely diagnose and solve your problem the first time without fail?M6Zealot wrote:Please I seeking real solutions not speculations. I need to see if anyone here has had this issue and was able to fix it with no more issues.
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- Beamter
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Re: HOT STAR ISSUES, LOOKING FOR REAL SOLUTIONS.
What pressure sensor would that be?M6Zealot wrote:Not replaced was the fuel injection ressure sensor not sure if they go bad?
What testing have you done to check your hot start problem? A residual fuel pressure test would be a good first step. If the fuel pressure is good, you will want to check to see if you have spark and injection pulse when there is a no start issue.
This might help... http://www.mye28.com/viewtopic.php?p=86 ... a0a#869180
We chased one here for a few months, turned out to be a bad temp switch (the blue one).
We chased one here for a few months, turned out to be a bad temp switch (the blue one).
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Re: HOT STAR ISSUES, LOOKING FOR REAL SOLUTIONS.
I think he may be talking about the Barometric Pressure Sensor.mooseheadm5 wrote:What pressure sensor would that be?M6Zealot wrote:Not replaced was the fuel injection ressure sensor not sure if they go bad?
What testing have you done to check your hot start problem? A residual fuel pressure test would be a good first step. If the fuel pressure is good, you will want to check to see if you have spark and injection pulse when there is a no start issue.
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Re: HOT STAR ISSUES, LOOKING FOR REAL SOLUTIONS.
Unplug that to rule it out.Mark 88/M5 Houston wrote:I think he may be talking about the Barometric Pressure Sensor.mooseheadm5 wrote:What pressure sensor would that be?M6Zealot wrote:Not replaced was the fuel injection ressure sensor not sure if they go bad?
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Rich Euro M5 wrote:I don't see the coolant temp sensor listed. This can cause hot start issues if the resistance is out of specification (reads higher resistance than it should for any given coolant temperature).
1st 5er wrote: We chased one here for a few months, turned out to be a bad temp switch (the blue one).
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when it doesn't start is there spark at the spark plugs??
if not maybe check for dry solder joints in the ecu common fault.
if it has spark then start looking at fuel issues.
you dont need the cold start injector unless its really cold.
i have unplugged my one.
also some times they leak fuel into the intake when sitting and can flood the engine.
how is the afm , have you had it on a dyno and checked air fuel ratio's etc
if not maybe check for dry solder joints in the ecu common fault.
if it has spark then start looking at fuel issues.
you dont need the cold start injector unless its really cold.
i have unplugged my one.
also some times they leak fuel into the intake when sitting and can flood the engine.
how is the afm , have you had it on a dyno and checked air fuel ratio's etc
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- Beamter
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Re: HOT STAR ISSUES, LOOKING FOR REAL SOLUTIONS.
Fuse 1 is for fuel pumps, also check the relay. Temp sensor Also main relay and ECU are usual suspects.
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Re: HOT STAR ISSUES, LOOKING FOR REAL SOLUTIONS.
I had a hot start issue for a while also. turned out to be the ecu. the mechanic re-soldered one of the circuits and it solved it. After that I was having an issue with it sputtering and I fixed that replacing the temp sensor.
Re: HOT STAR ISSUES, LOOKING FOR REAL SOLUTIONS.
No response will = No REAL SOLUTION. Maybe if we ask harder...