Vehicle issues

[schaffer1306]

Good day,

I recently received a 1979 FJ40 land cruiser that was shipped from the east coast. Its an American market which was bought in 1979 by the original owner and then myself. I finally got it from the shipper lastnight and it was running well upon them off loading it. I noticed that the fuel gauge was empty so I though I would make a run down the road (1mile) to fuel it up. Upon getting out of the neighborhood and going into second gear I made it about 50ft before it started bucking and losing power. I put it back into first which worked to stop the bucking and return power momentarily before that too started to buck as I attempted to get some speed. I made it to the fuel station by feathering and filled up tank and upon exit everything seemed good and normal. I pulled back out onto the road and then lost power immediately as I began to accelerate. I wasn't able to make it even two meters before having to set it in a parking lot and then walk home to get my truck to tow it back. I could use assistance in the diagnosis of possible issues.

Mechanics of this rig.

- Recently rebuilt 2f engine w/4speed transmission
- Still Carbonated
- Everything present is stock minus the air filter on the Carbonator

I am seeking fellow support behind this issue first before calling in a local mechanic for diagnosis.

 

[charliemeyer007]

Change the fuel filter. Add a bottle of yellow fuel dryer to the tank. This should solve the water in fuel issue. You might need to swap in a new fuel filter again - save the old new one - let it dry in the sun for a few days it will be good as new - you can swap it back in later.

Get it running at a good idle. Shut it off - disconnect fuel line at carb - stick it in a coffee can - start engine - look at fuel flow - it should surge steadily - if it pauses then spurts then pauses - the fuel pump is going out or maybe there is crud in the line/tank outlet.

Timing check the spark and valve lash. Check for vacuum leaks - I use a can of wd-40 with a pee tube. With cold engine idling - lightly and quickly spray along the carb gaskets and the intake manifold mating surfaces - if RPMs kick up there is your intake leak.

If the distributor cap has aluminum contacts inside - lightly scrape of the corrosion (its an insulator) I like the small blade of a Swiss Army knife for this task.

Do a dry and wet compression test, record the results. Clean and gap spark plugs - insure the electrode is square.

 

[ceylonfj40nut]

Might need a carb rebuild.

 

[devo]

Might need a fuel pump?

And for the record the word you are looking for is carburetor

 

[3_puppies]

what month was the rig made?
Dec and earlier is identical to 78 model
Jan and later is a "true" 79 model

this is important for parts ordering

X2 on what @charliemeyer007 stated above, fuel issue somewhere

 

[Subterranean Nik]

Fuel filter check. Fuel line check (to make sure not collapsing under load). Fuel lines runner or steel?

How old is the gas tank? Any chance rust in the tank and a piece of rust scale is sucking against the tank outlet?

What type of carburetor are you running? Reason I ask, somehow inlet filters that aren’t as obvious when looking around.

Maybe fuel pump if supply can’t meet demand… assuming stock one vs electric?

Nik P

 

[pb4ugo]

If you have a stock carb, there's a window on the side of carb that shows the fuel level in the float bowl. The fuel level should be in the middle. If it dies again look in the window and see where ithe fuel is at.