Not exactly sure what you mean about starting fluid, though. Never even heard of it, and so I don't know the answer.
My Mercedes' 90 and 91 have them just inboard of the right rear wheel, the fuel pumps. Are yours there?
Anyway here is where to ask:
W124 E,CE,D,TD Class - Benzworld.org - Mercedes Benz Discussion Forum
You have a W124, and these guys would know.
If you give up right near you is the awesomest mechanic for the older Mercedes in the Valley, and VERY good rates.
Mr MB at 5557A Reseda, off the 101 in Tarzana. Name is Enrique Rodriguez, working on these cars since 1961.
I used him many times, he is great and I and many others here highly recommend him.
I like Eagle Rock a lot, Oxy College is up there isn't it?
They used to have a Chevy place there called Will Newman's Citizen Chevrolet, didnt they?
Very partial to the Volvos like you had, I actually almost bought a new 96 960 was on the basis of my excellent 740 1991 sedan. But a 2nd hand 1991 SEC560 black coupe that I still have got the $38,000 the 960 wouold have cost, the old 960 and the later S90 the LAST of the good RWD Volvos. Good looking too. The 240 is the eternal "brick". That and the 740 "look like the box they came in" LOL
66 IMPERIAL that is a real US luxo barge, impressive. Finest and most luxurious Chrysler they ever made thaqt decade. Wonderful with a 440 in there.