Hello everybody,
I joined this forum to share my experience with my Golf MK5 1.9 TDI PD 2004 BKC, 250.000km on board.
I was always wondering if my car had a lift pump (fuel pump at the fuel tank). I never heard a buzzing sound like the one you can find in MK4 PDs.
When I changed the fuel filter, I tried to prime the engine with (diesel) fuel. I turned the ignition key on and off 5-6 times, to let the lift pump bring the diesel to the diesel fuel filter. Then I tried to start the engine. I couldn't. I tried over 15 times with starter motor running for up to 10 seconds. I opened the fuel filter housing and it was dry. I put some diesel inside the fuel filter housing, I topped it of actually and the engine started. My conclusion from that experience was that either my car has NO lift pump, or the lift pump is dead and the engine has no real use of it, it is probably just there to prime the engine and once primed the dual pump takes care the rest, in other words the engine doesn't really need the lift pump. That was 2 years ago. The car ran fine till yesterday.
Yesterday though, my car died while driving. Wouldn't restart. Would spin the starter motor for 10 seconds and the engine would start briefly and die after 5-15 seconds. I changed the lift pump and now the engine is running great again. Interesting fact: I can't hear the new pump in the cabin also. Its silent. There is no buzzing sound like in the MK4.
I am confused as my two experiences are opposite. But my latest experience is that the engine cannot run with broken lift pump. My previous experience was that the lift pump wasn't pumping (lift pump was broken or missing) but the engine was running fine.
So if your engine can't start or starts after a lot of cranking the lift pump can be a reason.
tags: lift pump, fuel pump, fuel tank pump, engine cranks won't start, engine doesn't start, dual pump, fuel filter, engine problem, 1.9 tdi, Golf MK5, BKC, diesel engine won't start.
Pictures of my old lift pump and the box from the new one. Both are Pierburg.
http://i67.tinypic.com/6fav7n.jpg
http://i64.tinypic.com/25g70ja.jpg
http://i63.tinypic.com/2hnc9dj.jpg
I joined this forum to share my experience with my Golf MK5 1.9 TDI PD 2004 BKC, 250.000km on board.
I was always wondering if my car had a lift pump (fuel pump at the fuel tank). I never heard a buzzing sound like the one you can find in MK4 PDs.
When I changed the fuel filter, I tried to prime the engine with (diesel) fuel. I turned the ignition key on and off 5-6 times, to let the lift pump bring the diesel to the diesel fuel filter. Then I tried to start the engine. I couldn't. I tried over 15 times with starter motor running for up to 10 seconds. I opened the fuel filter housing and it was dry. I put some diesel inside the fuel filter housing, I topped it of actually and the engine started. My conclusion from that experience was that either my car has NO lift pump, or the lift pump is dead and the engine has no real use of it, it is probably just there to prime the engine and once primed the dual pump takes care the rest, in other words the engine doesn't really need the lift pump. That was 2 years ago. The car ran fine till yesterday.
Yesterday though, my car died while driving. Wouldn't restart. Would spin the starter motor for 10 seconds and the engine would start briefly and die after 5-15 seconds. I changed the lift pump and now the engine is running great again. Interesting fact: I can't hear the new pump in the cabin also. Its silent. There is no buzzing sound like in the MK4.
I am confused as my two experiences are opposite. But my latest experience is that the engine cannot run with broken lift pump. My previous experience was that the lift pump wasn't pumping (lift pump was broken or missing) but the engine was running fine.
So if your engine can't start or starts after a lot of cranking the lift pump can be a reason.
tags: lift pump, fuel pump, fuel tank pump, engine cranks won't start, engine doesn't start, dual pump, fuel filter, engine problem, 1.9 tdi, Golf MK5, BKC, diesel engine won't start.
Pictures of my old lift pump and the box from the new one. Both are Pierburg.
http://i67.tinypic.com/6fav7n.jpg
http://i64.tinypic.com/25g70ja.jpg
http://i63.tinypic.com/2hnc9dj.jpg
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