38plymouth

I found it. Thank God now I can sleep tonight. We have been out of town all day at a food show and this has just been driving me crazy as soon as we got home I was right back at it and tore the carb down one more time. I was determined to make sure every orifice was spotless. This time I noticed the idle orifice tube seemed to be slightly plugged. I had to use a very small sewing needle to punch through it then it cleaned right up with carb cleaner. I put the carb back on crossed my fingers and it started up and idled beautiful. I do still have a slight leak at the throttle shaft but I can live with it for now. The next couple days I get to drain the old fuel and clean the tank with something and get new ethanol free fuel in it. Thank you all. Oh and it appears the hole is supposed to be open. The car simply will not run with it plugged. I sent a picture to Mikes carburetor parts get his opinion so maybe I'll hear back tomorrow. But she's running great now.

C6J1, almost positive this hole has been open since i have the car. I have never removed anything from that spot and have rebuilt the carb several times over the last 25 years.

Actually I am anning in doing that, I need to pick up some fittings. The fuel bowl is always fill when I pull the top off. I don't see how it can be a fuel issue or a vacuum leak.

If I put my finger over that whole it dies. Plus the whole has been open for at least 25 years. Mikes carburetor parts thinks I either have a massive vacuum leak or a low fuel pressure. I guess my next step is to pull the fuel pump out and completely drain and clean the tank. There is no sign of a serious vacuum leak.

That hole has been open for the 25 years I have owned the car. Never noticed an issue with it though.

I put the proper base gasket on this morning and still no change. I did notice the idle smoothed out a little when I sprayed carb cleaner on the throttle shaft. The idle mixture screw still doesn't do much but it will try to die when turned in. I did notice the engine dies if I plug this hole with my finger. Should this be open?

Can you tell me a model number and where you bought it?

A little more info after talking to mikes carb parts they had me turn the idle mixture screw all the way in while the engine was running. I did and it had no change. They believe that I either have a serious vacuum leak or a plugged idle passage. I tore the carb down again and ran wire into every place possible. I cant imagine that the carb could be any cleaner. That had a slight change and the mixture screw would barely cause the engine to stall after that. I also sprayed a half a can of carb cleaner all over any place that could have a vacuum leak and never found anything. I went thru the carb one more time and will try it again tomorrow morning. If that doesnt do it I need a new carb, I'm just frustrated beyond belief right now. I also still dont know which base gasket is correct, I think the bottom one since I do have a passage that looks like it needs vacuum.

Well I got it running and I still have the same issue there is a ton of fuel dumping out the top where the power valve squirts it.I am at a loss I've had this thing apart 6 times and everything is clean and free no clogs no dirt no nothing I tried to call tech support at Mike's carburetor parts and they can't help me right now.. if anyone has any suggestions I'm all ears. I'm so frustrated right now.

I think I found the problem, well at least I hope its the problem but I won't know for awhile because my battery is dead. Some moron left the key on for 2 day.... So anyway, I noticed that I used the base gasket on the top instead of the one on the bottom. I had one on it like the one on the bottom since last year but it tore when I pulled the carb the other day. So, I think thats it but wont know until the damn battery charges.

I'm hoping to find some time to tear the carb apart again tomorrow. The only part I didn't take apart was the ball and clip under the accelerator pump. I did flood it with carb cleaner and hit it with air compressor. I'm really kind of at a loss about this right now. Hopefully cleaning that area solves the issue.

I actually lowered the float quite a bit and nothing changed. I am going to have to take the carb apart for the third time. I triple checked everything and it still dumps fuel out of the accelerator pump passages at idle.

I already rebuilt the carb with and replaced all the lines and fuel. I have some type of an adjustment issue that i just cant figure out. It seems to be the accelerator pump.

I'm having a terrible time with my car right now. I rebuilt the carb last November and literally drove the car once and parked it. I also drained the fuel and replaced the fuel lines and put ethanol free fuel in it. The car wasnt running great and I parked it after a car show and havent driven it since. Im trying to get it running correctly and I got it running today and took it for a drive. It idled ok but wouldnt rev up very high and wouldnt go over 50. I took it home and pulled the carb and it was full of grey sludge, so was the clear fuel filter. I had to clean out everything on the carb. I put it back on the car and replaced the fuel filter. Now it idles terrible and the engine shakes and wants to die. When I rev it up it runs good. I pulled the carb and went thru it again and made sure every passage was clean. It didnt help. I put in new plugs, pulled the distributer and checked everything. No change. What I do notice is fuel is squirting out of the accelerator pump holes at idle and I feel like that is the issue. I played with the float settings and that didn't help. What would cause this and also what are the symptoms of a high float and a low float? I have a car show in 1 week and I dont want to miss it.

Mine has an indentation in it from the lip on the body when its closed.

It goes on the lid then. I would check and see if they sell something else, that goofy shape on the one you have doesnt look even close to mine.

Do you have a picture of your trunk lid?

I have an original add for a 38 plymouth that sure looks like its on the trunk. Im 99.9% sure my car came from the factory with it on the trunk. It is an original low mileage car with mostly original paint. The weatherstripping appears to be rectangular and not shaped like yours in the photo.

The site will only let me attach one pic. I sent you a pm with a better picture.

This is how my 38 p6 trunk weather stripping is. It might be the original, but, if not it was replaced a long time ago.

I will try to do it tonight or tomorrow morning.

The trunk weatherstripping on my 38 plymouth is on the trunk lid not the body. I can take a few pictures if it helps.

I would say it runs ok but it does have a little hesitation on acceleration. When I rev it in neutral quickly it tries to stall. It didn't do this before the rebuild with the short accelerator pump so I'm still playing with it trying to get it right.

Everything on the carb looks stock to me except the accelerator pump. I have had the car over 20 years and it was an original unrestored car with 40,000 miles. It has some paint work done but everything else was stock and original.

My carb # is c6j1.