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Fuel Pump Noise/Hard Starting when cold 200 1981

posted by  someone claiming to be Michael Hale on  Thu Jan 4 03:37 CST 2001 [RELATED]

I've got a problem...my 81 240 with CIS injection takes quite a while to start up in the mornings. At idle it had a loud buzzing noise that resonated through the car, after diagonisis, it was a seized in-tank pump so I replaced that intank pump with a new one. Now, I still have the cold start problem and now the MAIN fuel pump is loud. The main pump makes a constant higher pitch buzz (but not anything close to the normal whirring noise it should have) that resonates up through the floor board. Could this be a burnt out main pump (considering the in tank pump had been seized for 5-6 months)? By the way, the little hose in the tank was OK and the hard starting is independent of fuel tank level. What else could cause this? Thanks

Mike Hale

81 240 150000mi





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