I need to know if I can replace the rusty steel tank in my 87 300E with a plastic tank from a later 124.

when will this fuel injection nightmare pig from hell ever go away???

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1987 300e manual 250,000 km (sold)

I am not aware of MB using a plastic fuel tank on the 124 chassis vehicle during assembly, however I would not be surprised if a new replacement from MB was plastic due to manufacturing costs.

The fuel injection nightmare dissapears when all, I repat ALL of the contaminated items are replaced during the same repair. Anytime you replace a fuel injection component where there is evidence of contamination within the system you risk damaging the replaced item(s) unless ALL known contaminated pieces are replaced. From the fuel tank to the injectors and it includes everything in between. Water is the evil enemy in all fuel injection systems but in the CIS fuel system it is worse than evil

oh, thanks for that nugget of information

I was aware that the official MB recommendation for ailing FI systems was to replace everything, but I thought that was just a standard stealership response and the mechanically minded could get by by just replacing each part as it failed. but no.

in honour of this momentous discovery, I shall rename my benz something dark and appropriate. sisyphus perhaps, or maybe tantalus. Prometheus! that's the one.

Your starter for 10. Would you prefer to:

A) Maintain a 19-year-old fuel injection system on the cheap,
or
B) Have your liver pecked out by eagles for eternity

Tough choice...

oh, and as for the plastic fuel tank, I think that's something I picked up from WIS but I'd need to reload it to be sure. Was hoping someone could confirm it for me.

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1987 300e manual 250,000 km (sold)

I choose B, the pain is predictable................

CIS an Water; bad juju. Have you been able to establish a reliable source for good used items? If not try Stockton Autowreckers in CA