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  #1  
Old November 17th, 2011, 03:23 PM
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Derek Chace
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fuel starvation

I have having some problems with the 200tdi and wondering if you might have any ideas. It all started when I almost ran out of diesel the other week. Engine was sputtering just as I got to the station. After that it ran fine for a while like 200 miles then would start acting like it was out of diesel (mainly when it had less then 1/4 tank) Would sputter and die. I thought maybe it was just low on fuel and refilled it and it ran fine. Now it was doing it with 1/3 to 1/2 a tank today and was really bad going up hills around turns and so on. I then replaced the fuel filter (a little bit of crude in the bottom of the bowl) but it is still having the same problems. It seems to do it more when the car has been driving for about 30 minutes or more lately. Any ideas? Is there a sediment drain on the tank? Some people are saying maybe a new lift pump or try blowing out the lines with air?

------ Follow up post added November 17th, 2011 03:34 PM ------

the other thing I noticed is the fuel gauge swings widely when I take a turn when it has less then half a tank.
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  #2  
Old November 17th, 2011, 03:42 PM
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sounds like the lines are sucking air somewhere to me. any cracked fuel line hose somewhere or loose fittings?

check around the lift pump
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Old November 17th, 2011, 03:56 PM
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Where is the lift pump located? Also if it was a cracked line would not be leacking fuel or running bad the whole time?
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  #4  
Old November 17th, 2011, 04:00 PM
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lift pump

lift pump is located just behind the injector pump. Should have a little handle on it to manually prime the engine. I would check the fuel filter if they get plugged or dirty it can starve the engine of fuel.
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  #5  
Old November 17th, 2011, 04:12 PM
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I just changed the fuel filter still no differmece. Seems to do it when the car has been running for more then 20min


------ Follow up post added November 17th, 2011 04:19 PM ------

nope I was wrong still doing it with a full tank. How ever it need to be warm to do it. So the has to be driving for 20 minutes or more.
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Old November 17th, 2011, 05:42 PM
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1) does the truck have a sedimenter anywhere between the tank and the mechanical fuel pump on the side of the block ? This is the pump behind the injection pump referenced above. If there is there a sedimenter (suposed to be)obviously start there and clear it.
2) if no sedimenter move to the lift pump. There is a thumb lever on the pump. The pump is mechanical and drives off the cam shaft so it you pump the lever and there is no resitence you need to turn the engine over until there is. Once you have resistence @ that lever, open the bleeder screw on the top of the fuel filter housing pumping the lever should result in fuel coming out of the bleeder. If not you need to determine if this is because no fuel is getting to the pump or if the pump itself is shot. Blowing air through fuel lines is a bad idea. Diesel is supposed to be filtered down to a couple of microns before entering the injection pump. Removing the output line off the filter housing and pumping the lever should result in a signifigant gush of fuel out of the filter canister.

If not and this is a conversion and there is a spice in the fuel line going into the lift pump you could take a length of 5/16 fuel line and run it into a can of clean diesel. now pumping should definately push fuel out of the filter housing. If not lift pump is toast.

If the lift pump works fine pulling fuel out of a can but not from the tank there's a chance your fuel tank pickup screen is clogged with crap.

This crap happens to me with trucks @ the port frequently.
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  #7  
Old November 17th, 2011, 05:47 PM
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its a 83 Defender with a Disco 200tdi conversion. I hane a new fuel pump I am going to try tomorrow.

------ Follow up post added November 17th, 2011 06:52 PM ------

On The old fuel pump on the engine the lift lever thing is very week (moves very freely) well the new on in the box is very stiff. I know very little mechanically but I know one is not like the other. Also some one said to blow out the fuel lines. Any only know how hard that is?

------ Follow up post added November 17th, 2011 06:53 PM ------

On The old fuel pump on the engine the lift lever thing is very week (moves very freely) well the new on in the box is very stiff. I know very little mechanically but I know one is not like the other. Also some one said to blow out the fuel lines. Any only know how hard that is?
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Old November 18th, 2011, 05:44 PM
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I blew out the fuel line and replaced the fuel pump. Runs much better but stills acting up at low speeds once and a while then will run fine. No sediment drain on the tank or back of Rover just on the fuel filter. So I guess next step drop the tank?
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Old November 18th, 2011, 06:37 PM
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If no sediment filter on the right rear frame rail near the rear wheel I would go with Doug and think the tank pick up is clogged.
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Old November 18th, 2011, 11:04 PM
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Well I guess if it continutes it's drop the tank time. Any done that? How long does ussaly take?
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Old November 19th, 2011, 12:44 AM
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As Doug said you need to bleed the lines so there is no air in them. You said that you have done a few things but you haven't mentioned that yet. You could have gotten air in there when you sputtered into the gas station in the beginning of your issue.

I would try that before dropping tank.
Good luck!
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  #12  
Old November 19th, 2011, 09:50 AM
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Tried it still a problem once and a while. I leaves me to think contamination/ crud in the fuel tank or pick up pipe. It there a way to check the pick pipe removing the tank?
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Old November 19th, 2011, 10:05 AM
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The system is self bleeding. There is no advantage in manually bleeding it. You can let it run dry and it will purge itself of air with no problem.

You have pluggage or an air leak upstream of the lift pump.

Test 1) Disconnect the fuel line into the fuel filter and the fuel solenoid wire. Put the fuel line into a bucket. Crank the engine. It should be pumping lots of fuel into the bucket. If not, then your problem lies in the pump, a plugged line or an air leak. If the fuel is "foamy", you probably have an air leak.
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  #14  
Old November 23rd, 2011, 12:58 PM
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still having problems on start and at low speed. Its going in for the tank dropped, all the lines cleaned, and so on. Hopefully this fixes it. I have also fitted new lift pump with no change. I think there is just a lot of crud in the tank. Also I never plan on letting it get lower then. 1/4 tank again.
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Old November 28th, 2011, 02:43 PM
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Still having problems. Checked the pick up screen and it's clear. Do you still think it's worth dropping the tank? Looked for air leaks and found none. The problem now the Rover will run fine half of the time. It will get up to top speed drive well but then at low speeds or a stop it will run ruff and some times will stall out when I give it gas. It also has become harder to start.
What I have done so far.
New lift pump and filter, blew out the fuel lines, having a oil change done today.
I'm really running out of ideas.
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Old November 28th, 2011, 05:26 PM
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I have heard in the older cars, back in the day, that if you wanted to mess with somebody you could put a ping pong ball in the gas tank and screw with them. As the tank got lower on gas the ball would get sucked up to the fuel delivery line. The car would stall, loose fuel pressure, and then start up again. I am not saying you have a ping pong ball in your tank but loose gunk might be doing the same thing. I would drop the tank. It can't hurt.
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