Stromberg 97 repair?

Digger

Digger

Well-known member
I have a British made 97 with less than 100 miles on it. On my ‘34 Roadster, ran just fine. I broke down the engine compartment to refresh it, restored the air cleaner, put on a new copper mesh filter…

Put it back together, car starts right up, but rumbling, bumbling, stumbling. Put on a separate rebuilt original Stromberg 97, car runs perfect.

I think some of the copper mesh particles got sucked into the British one. I am not a mechanic, would like to send it out to someone to open it up and check it out, and adjust the idle screws that messed with to try and rectify the situation.

I reached out to Uncle Max’s, left a voice mail, sent an email, filled out the form on his web site to no avail. Any help appreciated
 

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This might not help you however, I once had this problem with a Ford Holley 94. I tinkered in the engine compartment and replaced the air cleaner. Suddenly I had the problem you have explained. I opened up the throttle to wide open with the engine running. Then I put my hand over the air horn. It created enough vaccuum to suck the dirt out of the jet. Nice '34 roadster.
 
Thanks, Max said your palm idea may work, but just sending it to him to handle. He mentioned the compressed air thing too, and never use carb cleaner, it will ruin the accelerator pump.
 
Seth Swoboda said:
This might not help you however, I once had this problem with a Ford Holley 94. I tinkered in the engine compartment and replaced the air cleaner. Suddenly I had the problem you have explained. I opened up the throttle to wide open with the engine running. Then I put my hand over the air horn. It created enough vaccuum to suck the dirt out of the jet. Nice '34 roadster.
Click to expand...


An old VW owner fix.
 
The hand over the opening generally works ok with on carburetors with mechanical power valves (enrichment valves). On carburetors with vacuum operated power valves you can sometime rupture the diaphragm of the power valve requiring carburetor disassembly.
 
I was at the Gettysburg EFV8 Club national meet one year. I had taken the air cleaner off and fooled around under the hood. Evidently a small piece of dirt made it's way to the carburetor. Not having a spare carburetor and needing to head out with the car, I tried the hand over the air horn trick. It worked. That is the only time so far I've needed to do that. I was probably about 32-34 years old then and I remembered an older gentleman telling me about this trick.
 
Here is the answer back from Max…

Your carb is on the way back to you.
There were a couple of things wrong with it that I think were coincidental to replacing the copper filter element!
The fuel inlet was stuck, closed.
The accelerator pump leather was dried out.
The float level was set far too low.
I also replaced the throttleshaft, because the linkage arm was loose.
Plus, I underestimated the shipping cost by 2 bucks. It was $19, not $17.
Should be plug & play.
Thanks, Max
 
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