Re: 1938 Super 8 1605 - adventures with a newbie
Posted by kevinpackard On 2023/8/14 23:54:28
Alright I had a few minutes tonight, so I removed the fuel pump and redid the diaphragm. We had missed the step where we were supposed to preload the diaphragm before tightening it down.
The fuel bowl had some debris in it, so it appears to be working at catching particles. The screen was clean as far as I could tell.
I double checked to make sure that the preload was correct, and reinstalled.
I ran the starter for about 5 seconds and the bowl filled about 3/4 of the way up. I take that as a good sign. It seems the suction is working as it should. The car started fine and didn't seem to have a fuel delivery problem in the shop.
The real test will be when I do another road test. That's a production because I need to be sure my wife can follow me in the truck....in case I need to tow it back home. The fuel always seems to do fine when the car is stationary...idling, revving, etc. But as soon as the car is under power it really seems to struggle.
I'm also noticing the idle speed seems really high. I was able to borrow a tachometer from a friend, and sure enough the idle RPM's were hovering around 1K. The Service Manual says that the idle speed adjustment is made at this screw, but the screw isn't even touching anything. The part the screw is supposed to touch is connected to the choke. I'm not sure where I need to make adjustments to get the idle speed where it should be. I'm assuming it's messing with my timing settings as well.
-Kevin
Attach file:
Debris in fuel bowl.jpg (85.38 KB)
Quickly filling up.jpg (112.27 KB)
Idle speed way off.jpg (138.50 KB)
Idle adjustment.jpg (105.38 KB)
The fuel bowl had some debris in it, so it appears to be working at catching particles. The screen was clean as far as I could tell.
I double checked to make sure that the preload was correct, and reinstalled.
I ran the starter for about 5 seconds and the bowl filled about 3/4 of the way up. I take that as a good sign. It seems the suction is working as it should. The car started fine and didn't seem to have a fuel delivery problem in the shop.
The real test will be when I do another road test. That's a production because I need to be sure my wife can follow me in the truck....in case I need to tow it back home. The fuel always seems to do fine when the car is stationary...idling, revving, etc. But as soon as the car is under power it really seems to struggle.
I'm also noticing the idle speed seems really high. I was able to borrow a tachometer from a friend, and sure enough the idle RPM's were hovering around 1K. The Service Manual says that the idle speed adjustment is made at this screw, but the screw isn't even touching anything. The part the screw is supposed to touch is connected to the choke. I'm not sure where I need to make adjustments to get the idle speed where it should be. I'm assuming it's messing with my timing settings as well.
-Kevin
Attach file:
Debris in fuel bowl.jpg (85.38 KB) Quickly filling up.jpg (112.27 KB) Idle speed way off.jpg (138.50 KB)
Idle adjustment.jpg (105.38 KB)
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=260374