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  #21  
Old August 29th, 2016, 11:10 AM
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Alexandra
1995 D90
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On the filter the top line goes to the IP.

The bottom line on the filter goes into the top of the lift pump.

There is a hard plastic line fuel that T-s into the Webasto heater and also the lift pump. The IP has a fuel line that comes out of it.

I disconnected the solenoid and cranked it twice and got no fuel out of the bleed screw on the filter. Third time is the attached video.

I didn't disconnect the fuel line on the filter because I couldn't get the bolt loos on it or the IP and didn't want to make a mess of them. The hose is crimped in place and I don't have a replacement clamp. If I still need to get the hose off to check flow I can but it seemed pretty decent to me just with the bleed screw.
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  #22  
Old August 29th, 2016, 11:44 AM
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John B.
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Quote:
Originally Posted by aosias View Post
The bottom line on the filter goes into the top of the lift pump.
Are you positive? As I understand the 300TDI lift pump, the inlet is the top port and the outlet the bottom port.

Although it does seem to be pumping.

See attached from the workshop manual.
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  #23  
Old August 29th, 2016, 11:51 AM
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You are correct. I had that written down wrong. It's set up like the diagram, just without the optional sedimenter.

Assuming I can rule out the lift pump or fuel delivery to the motor as my loss of power.
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  #24  
Old August 29th, 2016, 12:41 PM
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Looks fine. "Maybe" a bit aerated, so a leak on the suction side might be possible. I don't think sedimentors are as important with a 300TDI as they have the screen inside the lift pump. Early engines don't have a screen and the check valve is easily messed up without a sedimentor.
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