bmwe21.net forums

ok so little back ground and then the problem...

brought my 323i e21 1981 from a friends dad that he brought 8 years ago, used for a bit and then decided to take it offf the road for a project, and well.... it never happened so i decided to buy it off him and get it up and running and use if for my project.

so I've checked over in the engine bay, all the suspension has been check over and from what i can tell i need a new radiator and the fuel isn't getting to the injectors.

I've traced it back to the fuel pump or the accumulator (think thats what its called) the fuel pump works unsure if its pumping fuel but you can here it working. so i'm assuming its the accumulator.

the thing i'm asking is, is it possible to use any accumulator? as in uk e21 parts are few and far between and dont really have the cash to buy new, wondering if a part from a e30 or e36 would work?

any help would be grateful. thankyou.

You cannot check if a pump is working by listening to it, the e21 is a high pressure system so the pump may run but not generate enough pressure.

The other issue the fuel evaporates overtime and leaves a gum residue which blocks the internal passages ways in the fuel metering head.

First thing to do is crack open the fuel line feed to the fuel meter head, if yes then work towards the injectors to figure out where the blockage.

The down side not many other bmw's used k-jet

Jason

Jason_323i wrote: The down side not many other bmw's used k-jet
Jason

There is also the possibility of parts matching with another make that used K-Jet - so that could mean Porsche, Volkswagen, Audi, BMW, Mercedes-Benz, Lotus, Ferrari, Peugeot, Renault, Volvo, Saab and Fords of the late 70's and early 80's. Don't forget to try the dealers or even Bosch themselves, as they I've no idea of prices so you never know until you try.
EDIT: found this site on a casual search for accumulators:

http://www.kmipetrolinjection.co.uk/Bos ... tronic.htm

But like jason said, check for blockages as old petrol will potentially gum up the system.

I got my accumulator off a volvo 240 with k jet

I've got working Kjet parts here if you need them from my 323i...

If it's for getting the car running again, can't you just delete the accumulator? Believe there are more pleople that did that, and with success?

Still I'd start off by checking if the spark plugs are dry indeed, then measure pressure and turnout on the advance line to the fuel dizzy to see if there's enough fuel getting to the K-Jet, should help narrow things down to fuel supply or injectors not opening for another reason: being all gummed up. Also, check if the valve of the K-Jet dizzy moves freely (open up air filter housing, filter aside, feel up the K-Jets bottom and carefully push the lever up a few times and see if it easily comes down again)