As I understand the CIS injectors are made for a life span of about 100K and cleaning them typically doesn't work well. They're not like the Bosch EFI ones, can't simply install new o-rings, filters, and pintle caps and expect them to work well.

I have new brass injectors to stick into my 420 once the M117 swap is finished, along with new insulators, o-rings, etc.

Remember, you're driving a vehicle that was probably $75K or so new... don't expect parts to be dirt cheap to replace. May want to consider new fuel pumps too as they like to take out the fuel pump relay with excessive amperage draw.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]