Could be a number of things. More than likely getting air in a fuel line. Fuel filters... When is the last time you changed them?

Do you have the old or new style primer pump? What condition are your fuel lines in to the pre filter and lift pump? What kind of hose clamps (factory or other)? Do you have the "cigar hose" or just a piece of hose?

Worn engine mounts and shocks can cause it too. But there are other simpler things to check first.

Check the rack pin after you have ruled out the leaks. Look at the color of the pin. If it is silver, it is the older one. Gold color is the newer one.

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AJ

1985 300D (SOLD)