Flooding Carbs at inclines

[69FJ40SD]

Just looking for some opinions on Carburetors. Right now I have my aftermarket Holley tuned and the FJ runs great...except at steep in/declines. I've looked at different jetting options as well as buying the webber that MAF makes specifically for the fj. So I guess my question is if you have run into similar issues and your solutions to stalling out at steep hills.

 

[Fast Eddy]

I had exactly the same issue. My solution was to return to a stock Aisin carb. I would recommend you do the same. The Holley is just not made to run off-road. If you do a search you will find many threads on this topic with a few confused Holley and Weber people and lots of very satisfied Aisin people. Search for "trollhole carb"

 

[Pighead]

and the FJ runs great...

specifically for the fj.

Stop calling it an FJ.

 

[Felix]

I had exactly the same issue. My solution was to return to a stock Aisin carb. I would recommend you do the same. The Holley is just not made to run off-road. If you do a search you will find many threads on this topic with a few confused Holley and Weber people and lots of very satisfied Aisin people. Search for "trollhole carb"

What he said. Had a 4-barrel Carter AFB -- would stall on inclines and off camber. Got an Aisin from JimC, and I've never had another issue.

 

[Weber Sarge]

Both designs by Holley (derived from Weber) and the Weber carb both have the same issue, they flood out their air mixture jets since the bowl is too shallow. The Aisin carb is built completely different and without a whole lot of mods the aftermarket carbs will never perform like the stock one....
Sarge

 

[Michael Hanson]

Toyota drove the cruisers with Aisin carbs. up the highest mountains in Japan, thats good enough for me. We drove ours on forest service trails on Mount Magazine in Arkansas, no problems. MIke

 

[Tancruiser]

I have a Webber 38/38 on my 2f and have never had a problem in the 15 years I,ve had it .

 

[igotta40]

In 1981 I bought the Man A Fre horsepower kit: Delco distributor, header and Rochester 2 bbl carb. Both throttle plates on that carb are on the same shaft, so I did not have a 'progressive' setup, which did give more power from a start, but the carb was all wrong for a Cruiser. It was rotated 90 degrees to fit the F engine intake manifold, so every time I made a left turn the truck would hiccup and when I climbed hills it would starve out.

In 2006 I went back to the Aisin carb and all those issues went away... Climbing hills now is only a matter of traction... I also got rid of the Delco distributor. Frustrating to go to the parts store and order points cap and rotor for a 1952 Chevy Six...

Another vote for the stock carb, from the voice of experience...

 

[69FJ40SD]

Thanks for the help, I think I'll be going back to the stock carb seems like it's what I'm looking for.

 

[Pighead]

Stock carbs may be tough to find in running condition. I will second (or third) a vote for a Trollhole carb. Quicker, cheaper and probably easier to mount and run.

 

[69FJ40SD]

Thanks for the recommendation, it looks like there are very few people that haven't been pleased with there carbs from Trollhole.

 

[Sam Stewart]

My stock carb on my mini kept doing the same thing when we were at GSMTR. I either had it jetted wrong or idled to low or something. Whenever I would get on a steep incline it would die and smelled strongly of gas. The only way to get it restarted was to hold it to the floor and crank (and pray.) So, I'm now doing an EFI swap (22RE).

/rant

And I'll add a 5th vote (or whatever) for a Trollhole carb. Everyone seems to agree that is the best way to go. I've heard nothing but good things.