560 stumble after warmup
 

Help, 1990 560, new timing chain, seemingly running fine, after brief post office visit car ran fine for 100 yards, then stumbled.
Acts like a gas blockage.
If car sits a few, it runs for a few seconds then acts starved for gas.

How should I trouble shoot this?

What is a tumbling? :confused:

Hmm
 

I think he means STUMBLE..


.

I did too, but I was not for certain.



Start with a set of CIS gauges and check the pressure at the fuel distributor along with a vacuum gauge to the intake manifold.

MB FSM Engine Manual 420/ 560
 

Just posted a nice 560 engine manual in the Parts for Sale forum if you decide you need or want a paper manual! Good luck with this problem!