Disco doesn't start - Land Rovers Only

karover · 01-07-2005, 09:18 PM

I own a 1990 Disco, 3.9L w/ ZF trans,anyway, I started the Disco the other day and the engine started and idled for a few minutes then quit, now the engine cranks over and it sounds like it wants to start but doesn't. It has a new fuel pump. I can hear the fuel pump on for a few seconds when I turn the key on.There is no fuel pressure at the fuel rail. Anyone experienced this problem?

Kind regards,
Karover

Disco Mike · 01-08-2005, 06:44 AM

Did you or have you replaced the fuel filter?
When you say there is no presure at the rail, is that after you have tried to start it?
How is the presure at the rail if you just turn the key on the the 2nd position 2 times without trying to start it?
Mike J.

karover · 01-08-2005, 05:44 PM

The fuel filter was replaced, I have tried turning the key in the second position twice, but still no fuel pressure at the fuel rail.

Disco Mike · 01-08-2005, 06:08 PM

You say you can hear the fuel pump for a couple of seconds, well that is the pump priming the rail, it will shut off unless the engine is started. If your rail is not getting pressure and the pump is making noise as if it is priming, there is either a blockage in the fuel line between the pump and the rail or the pump is fried.
Mike J.

Disco · 01-08-2005, 08:02 PM

The pump cannot be fried if you can hear it working. Despite the fact that you changed out the fuel filter, it could still be block with crud if you have a dirty tank (water, bad fuel & crud). I'd re-check all the fuel lines from the pump onwards.
If all the above fails to produce results......are you getting a spark when you crank the engine?

01-07-2005, 09:18 PM	#1 (permalink)
karover Member Join Date: Dec 2004 Posts: 4 Gallery: 0	Disco doesn't start I own a 1990 Disco, 3.9L w/ ZF trans,anyway, I started the Disco the other day and the engine started and idled for a few minutes then quit, now the engine cranks over and it sounds like it wants to start but doesn't. It has a new fuel pump. I can hear the fuel pump on for a few seconds when I turn the key on.There is no fuel pressure at the fuel rail. Anyone experienced this problem? Kind regards, Karover

01-08-2005, 05:44 PM	#3 (permalink)
karover Member Join Date: Dec 2004 Posts: 4 Gallery: 0	Disco doesn't start The fuel filter was replaced, I have tried turning the key in the second position twice, but still no fuel pressure at the fuel rail.

01-08-2005, 08:02 PM	#5 (permalink)
Disco Super Moderator Join Date: Dec 2004 Posts: 1,819 Gallery: 0	The pump cannot be fried if you can hear it working. Despite the fact that you changed out the fuel filter, it could still be block with crud if you have a dirty tank (water, bad fuel & crud). I'd re-check all the fuel lines from the pump onwards. If all the above fails to produce results......are you getting a spark when you crank the engine? __________________ No hand signals, driver playing with his transfer Knob.

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01-08-2005, 06:44 AM	#2 (permalink)
Disco Mike Moderator Join Date: Aug 2004 Location: Parker, Colorado Posts: 5,156 Gallery: 0	Did you or have you replaced the fuel filter? When you say there is no presure at the rail, is that after you have tried to start it? How is the presure at the rail if you just turn the key on the the 2nd position 2 times without trying to start it? Mike J.

01-08-2005, 06:08 PM	#4 (permalink)
Disco Mike Moderator Join Date: Aug 2004 Location: Parker, Colorado Posts: 5,156 Gallery: 0	You say you can hear the fuel pump for a couple of seconds, well that is the pump priming the rail, it will shut off unless the engine is started. If your rail is not getting pressure and the pump is making noise as if it is priming, there is either a blockage in the fuel line between the pump and the rail or the pump is fried. Mike J.

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