Need Help!!!!! Dodge intermittently will crank but won't start
#51
05-07-2013, 11:27 AM
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Ok I pulled asd relay out and tested for voltage from battery and it shows 12.31 volts. When I use a jumper wire I get 12.31 volts at coil. With relay in now im getting 9 volts. I then partially plugged relay in just so I could still get my voltmeter on relay terminals and when engine is cranking 12.31 volts on one side and 9 volts on other side. It's weird. As far as I know a relay either pulls in or doesn't pull in.
#52
05-07-2013, 12:02 PM
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Ok we'll the guy had a deep cycle battery in it but it seems to drop in voltage as soon as I start cranking. I took the battery out of my f250 and now I'm getting 12 volts everywhere and it seems a lot stronger spark. I still do not know if this will fix the what I think are injectors leaking down.
#53
05-07-2013, 01:35 PM
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05-07-2013, 08:10 PM
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Ok installed the new battery. Problem isn't fixed yet. I do have a stronger spark but I think the engine is still flooding due to a leaking injector or two. I have the injectors pulled out and still attached to fuel rail but electric connectors aren't plugged in. Do I have to have them plugged in to see them leak because so far i haven't seen any leaks.
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05-07-2013, 08:13 PM
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05-08-2013, 12:14 PM
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05-08-2013, 05:49 PM
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05-08-2013, 08:51 PM
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#60
05-08-2013, 08:52 PM
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I have been working on a friends truck for about a week now. The syptom is, sometimes it starts and runs perfect and sometimes it won't start at all. It does not depend on the time of day nor outside temperature. If it does start you can shut it off and crank it right back up with no problem at all. It will also never die on you once it is running.
What I've done is put a fuel pressure gauge on the fuel rail. The original fuel pump was only about 30 psi and if I zero the gauge out even while running it took about 30 second to build back up to 30 psi. So I replaced the fuel pump with a new Bosch fuel pump. It seem to run great for me. I would crank it about every hour or two and it always started right up. I thought it was fixed so I gbe it back to my friend. He called me the next day and said it wouldn't start. I got it back to my house and put the fuel gauge ban on it and discovered that when the truck would start the fuel was 48psi. When it wouldn't start it was 20psi. So I removed and replaced pump with another new Bosch fuel pump.
I drove it around all day yesterday and it started right up every time throughout the day. When I parked it for the night I let it sit for a couple hours. I went out to crank it about 10:00 and it would not start. I got my gauge out, hooked it up and fuel psi was at 4psi. I turned key switch off and back on again and fuel pressure didn't increase at all. I can hear the fuel pump running. So while the gauge was hooked up I just started cranking. The pressure slowly increased (1psi per second.) when it got around 30 psi it almost started. It finally go to 50psi and it fired right up.
So I am extremely confused. Can anyone please help.
What I've done is put a fuel pressure gauge on the fuel rail. The original fuel pump was only about 30 psi and if I zero the gauge out even while running it took about 30 second to build back up to 30 psi. So I replaced the fuel pump with a new Bosch fuel pump. It seem to run great for me. I would crank it about every hour or two and it always started right up. I thought it was fixed so I gbe it back to my friend. He called me the next day and said it wouldn't start. I got it back to my house and put the fuel gauge ban on it and discovered that when the truck would start the fuel was 48psi. When it wouldn't start it was 20psi. So I removed and replaced pump with another new Bosch fuel pump.
I drove it around all day yesterday and it started right up every time throughout the day. When I parked it for the night I let it sit for a couple hours. I went out to crank it about 10:00 and it would not start. I got my gauge out, hooked it up and fuel psi was at 4psi. I turned key switch off and back on again and fuel pressure didn't increase at all. I can hear the fuel pump running. So while the gauge was hooked up I just started cranking. The pressure slowly increased (1psi per second.) when it got around 30 psi it almost started. It finally go to 50psi and it fired right up.
So I am extremely confused. Can anyone please help.
the drain on the bed rusted the fuel line