I hope you find your patent plate with the vehicle number, it is a significant loss if it isn't recovered. To many serious hobbyists and prospective buyers, a missing or reproduction vehicle number plate often casts questions about authenticity, especially on low production cars or those with unusual features such as yours.

If the correct switch for your car is p/n 472029, I have at least one, new in original packaging. It looks the same as your photos except that the contact pins on the rear appear to be bright nickel plated and not naked brass.

Soundsike you're asking about the Business cars. The Business sedans shared the same senior chassis with the standard offerings but were intended for sale to the professional/livery trade and thus they had some of the luxury content removed in order to offer a lower priced vehicle and one more attuned to the commercial trade. For example there are differences in rear axle spacing and wheelhouse dimensions, seat widths, and in interior fabrics (plainer but more durable), etc., read the attached Business Sedan information.

External differences I've noticed in 1941 models (1942 probably similar or the same) are absence of the fender "whisker" trim and absence of a passenger side internal sun visor on Business Sedans. I've also seen at least one with a removable passenger side door pillar.

UPDATE: Nothing specific in my file about the 1942 Business cars but here's some Packard literature on the 1937 and 1940 Business cars. There are folks who visit here that know a lot more than I do about the 1941/42 Business cars and I'm sure they will offer more info.

Attach file:

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  Business car catalog 1937 cover.jpg (998.54 KB)


  business car 1937 differences.jpg (1,419.08 KB)


  Business car 1940 pg 1.jpg (776.83 KB)


  Business car 1940.jpg (1,054.34 KB)

The Business cars are for professional/livery service and have some of the senior car luxury content removed to offer a more basic/cheaper vehicle.

Given the amount that I drive this car, I generally don't part with a spare if it's my only one. I'll take a look later today, I have a vague recollection of having yet another one and if I can find it, it will be available.

UPDATE: Sorry, I don't have an extra available. But easy enough to make, same outer profile as the pump flange, clearance on the inside for the arm motion; I can post a scan if you need it. It's going to get wet with oil splash from the crankcase so to make one I'd pick a material that's going to be compatible with warm motor oil.

The block, washers (under the bolt heads) , and I believe sleeves or bushings (over the bolt shafts) are all part of the installation package used to thermally isolate the pump from the heat of the crankcase, obviously to minimize the chance for vapor lock in stressful situation. The block is dark, almost black, made of some polymeric material, perhaps paper or fabric reinforced. Thickness is about 0.390" with a thin paper gasket on both sides.

Are you sure its not as simple as the accelerator pedal bottoming out against the floorboard before its linkage has had the chance to trip the starter switch? If so, a very simple linkage adjustment.

Simple enough to check, disconnect the accelerator linkage at the carburetor and then fully rotate the carburetor accelerator shaft to wide open and see if the starter activates. HH gave you detailed instructions in post 2, or you can just eyeball it.

One might expect to see some "black" smoke or carbon from incomplete combustion when the choke is less than fully open but once fully warmed I would not expect to see it under normal driving conditions.

I'm not sure how you missed it but it is in the parts book, part number 210127 on page 97, listed under "Motor Fuel Pump- attaching parts". It's a thermal insulator block, quite thick (about 3/8" or maybe a bit more). In the 1933-36 parts book it's listed as used all years on both the Eight and Super Eight, and believe it was also used in later years on the 320 engine.

I suspect I have an extra, I can get some dimensions for you if needed.

I think you'll be very pleased with the AutoLite 308 plugs, I've used them in just about every Packard that uses 14mm plugs with equally good results.