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300tdi lift pump

Posted: Sun Aug 09, 2015 8:16 pm
by JS
Hi everyone,

While driving home last week on the highway my 110 started to bog down.
I pulled over for a few minutes to let her gain some idle again & eventually made it home.

After checking the lever on lift pump (in different positions on the cam) it looked like it failed.
I removed the pump to check it & the lever / suction worked just fine...

As anyone experienced the same problem?

Thank you

Re: 300tdi lift pump

Posted: Mon Aug 10, 2015 7:12 am
by red90
The best way to check function is to disconnect the wire from the solenoid and open the air bleed at the filter. Crank the engine and you should get a good flow of fuel from the bleed vent.

If the pump is working, I would make sure the filter is changed and blow back the suction line to make sure it is clear.

Re: 300tdi lift pump

Posted: Tue Aug 11, 2015 7:34 am
by punkinracer
Replace the filter as well, it may be restricting the fuel flow which is giving you the signs of a faulty pump. Don't ask me how I know this!!

Re: 300tdi lift pump

Posted: Wed Aug 12, 2015 2:16 pm
by JS
Thanks!, I will try all that.

Re: 300tdi lift pump

Posted: Wed Aug 12, 2015 4:29 pm
by swamijake
Cleaned the sedimenter lately?