Hard starting cold Lean?
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Hard starting cold Lean?
HI,
I've got a 2000 Powerstoke 6sp Manual that is having problems starting when it is cold. The temp is currently 19 degrees here in Minnesota
I believe the glo plugs are OK. They are drawing around 150 amps, but I just timed how long they stay on and they are only on for 18 seconds. The light clicks off in about 10, but the GPR switches off in 18 seconds. I tried turning the key on and the off and on for several cycles and still no start. When I try to start it, it will kind of run when the starter is engaged, but again it seems to be running lean. In my expereince, when a diesel starts to fire it will eventually start, but this one seems to be starving for fuel, based on little or no smoke from the exhaust. Is the amount of fuel being injected during start up controlled by the engine computer? If so, I suspect it is getting a wrong temp input from some sensor.
It has new GP's, new relay and new harness. When it starts, it seems to run fine which I assume will rule out injectors. It draws around 140 amps thru the GPR.
Update: I finally got it started, but it was a new experience. It would run at about 800 rpm with the starter. Finally, it ran on it's own, but would only run up to about 1500 rpm at full throttle. No smoke at all from the exhaust, again indicating to me that it is running lean. After about 5 minutes it was running somewhat normal, but way down on power. I let it idle for 20 minutes and now it is running great.
Any tips will be appreciated,
Dave
I've got a 2000 Powerstoke 6sp Manual that is having problems starting when it is cold. The temp is currently 19 degrees here in Minnesota
I believe the glo plugs are OK. They are drawing around 150 amps, but I just timed how long they stay on and they are only on for 18 seconds. The light clicks off in about 10, but the GPR switches off in 18 seconds. I tried turning the key on and the off and on for several cycles and still no start. When I try to start it, it will kind of run when the starter is engaged, but again it seems to be running lean. In my expereince, when a diesel starts to fire it will eventually start, but this one seems to be starving for fuel, based on little or no smoke from the exhaust. Is the amount of fuel being injected during start up controlled by the engine computer? If so, I suspect it is getting a wrong temp input from some sensor.
It has new GP's, new relay and new harness. When it starts, it seems to run fine which I assume will rule out injectors. It draws around 140 amps thru the GPR.
Update: I finally got it started, but it was a new experience. It would run at about 800 rpm with the starter. Finally, it ran on it's own, but would only run up to about 1500 rpm at full throttle. No smoke at all from the exhaust, again indicating to me that it is running lean. After about 5 minutes it was running somewhat normal, but way down on power. I let it idle for 20 minutes and now it is running great.
Any tips will be appreciated,
Dave
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
Welcome to FTE.
Somebody please correct me if I am wrong, but there is a different way that the ECU gets temperature information based on whether you have an automatic transmission or a ZF6.
One is coolant temp and the other is oil temp.
Somebody please correct me if I am wrong, but there is a different way that the ECU gets temperature information based on whether you have an automatic transmission or a ZF6.
One is coolant temp and the other is oil temp.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
It could also be a sticking injection pressure control valve or a bad pressure sensor.
You really need to get this thing scanned and do some data logging unless you want to throw parts at it until the problem goes away.
You really need to get this thing scanned and do some data logging unless you want to throw parts at it until the problem goes away.
