77 FJ40 (Kiwi) New Zealand, built with a 75 Motor - That's what's on the Build Plate.
I'm new to FJ's and F-motors, but have been around cars for a long time.
This one runs and drives. High idles OK at 1500; a little jumpy. Goes 45mph no problem, but refuses to idle below 1200. Aisan carb was filthy so temporary replaced it with a Partol (China I think), has the same problem. Vacuum pressure is around 16 and bounces +/- 2. Start to back off and when I hit 1200ish it dies out.
Plugged all vacuum lines, used Halomar sealer all the gaskets between the carb and manifold, tightened the manifold bolts. Same problem.
Used carb cleaner on all the seams, no real rpm change though tough-to-tell idling at 1500.
Started to look at timing........
Timing marks show in the window at cylinder #6, so it looks to be 180 out. However, I get no marks using a timing light when connected to cylinder #6, OR ANY OTHER. Vacuum advance works when I use a hand pump. The engine runs strong, so I'm inclined to let this go for now......
Next Steps?
1. I'm going to check compression and make sure it's not a bad valve. Then
2. Remove the manifold, reface it, and new gaskets.
Am I missing anything? Anything easy before I pull the manifolds?
Thanks in advance.
Bob
I'm new to FJ's and F-motors, but have been around cars for a long time.
This one runs and drives. High idles OK at 1500; a little jumpy. Goes 45mph no problem, but refuses to idle below 1200. Aisan carb was filthy so temporary replaced it with a Partol (China I think), has the same problem. Vacuum pressure is around 16 and bounces +/- 2. Start to back off and when I hit 1200ish it dies out.
Plugged all vacuum lines, used Halomar sealer all the gaskets between the carb and manifold, tightened the manifold bolts. Same problem.
Used carb cleaner on all the seams, no real rpm change though tough-to-tell idling at 1500.
Started to look at timing........
Timing marks show in the window at cylinder #6, so it looks to be 180 out. However, I get no marks using a timing light when connected to cylinder #6, OR ANY OTHER. Vacuum advance works when I use a hand pump. The engine runs strong, so I'm inclined to let this go for now......
Next Steps?
1. I'm going to check compression and make sure it's not a bad valve. Then
2. Remove the manifold, reface it, and new gaskets.
Am I missing anything? Anything easy before I pull the manifolds?
Thanks in advance.
Bob