FJ is F'ing but not J'ing. Open lung surgery. Or the carburetor bowls behaves like my bank account
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In this episode of the toyota soap opera, adventures in diagnosing and fixing the trusty and crusty Toyota FJ40 not happy at WOT (https://opposite-lock.com/topic/83220/fj-not-fjing/1?_=1695046790288). This week, we're doing an open lung surgery. Aka carburetorectomy.
Like everything else on an old Land Cruiser, the carb is pretty easy to get at ... it's right there on top of the engine. This thing with hoses and linkages and cables and wires and linkages and springs and whatnots and more linkages ...
... off it goes and onto the work bench. No picture because the gasoline fumes make me happy and I forget to take pics, but trust me, the insides of said carb were in perfect condition. No sh&t in the bowl, no clogged jets, no damaged membranes, all the springy bits springing and the vaccuum bits vaccuming and the sprayy bits spraying happily. Well, crap, that's not the problem then. On the bright side, now I can take that out of the equation. On the dark side, uh, how am I gonna put all them linkages and cables and shizzles back together .... damn.
Oh yeah, also, in this modern world, believe it or not, a rebuild kid (I need to replace at least all the gaskets on this multi-layer sandwich of light alloy swiss cheese blocks) costs with shipping as much as a brand spanking new Bezos special carburetor. You gotta be kidding me ... In one hand you have the specialized cool kids distributors of the interwebz such as Cruiser Corps and cohorts, who have highly customized kits for each possible models and versions and revisions of each and all carburetors that saw the underside of the hood of a Toyota in the past century, with the promise that they'll be back in stock soon ... on the other hand, you have the good ol' bay of the E, overflowing with gasket kits that are cheap and supposedly universal but suspiciously not looking like the ones I just scrapped off the carb ... and on the third hand you have Bezos' own plug-in and shut up solution, that will deliver tomorrow for a benjamin, shipping included, which is equal or less money and way faster than the other above options when S&H is taken in to account. What to do ... hmm ... hello darkness my old friend, I've come to buy from you again ...
So there. New carb it is. Litterally plug and play. Which is the hard part, the plug, not the play. Effing choke cable took way more time and cursing than it should, but it's on. Let's give it a try ...
Well yeah, it's running pretty well but guess what ? I still boggs at WOT. Which is expected since the carb was in great shape anyway. But while we're here, a quick experiment ... them carburetor has a handy little sight glass in the front of the bowl ...
... a brick on the throttle pedal to simulate spirited/freeway driving conditions, and watch the level of fuel in the bowl. One can watch the fuel emulsify/vaporize at first then the fuel level going down down down and the might inline 6 coughs and dies. (I know I know it's not actually representative of actual driving conditions as there is no load and it wouldn't rev that high but still)
So basically the carburetor behaves like my bank account. It empties faster than it can replenish.
Stay tuned for the next episode in which we'll discuss replacing the fuel pump.
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@Darkbrador have you tried setting the float to allow more gas in to the bowl?
'03 Subaru WRX Wagon | '84 Toyota Pickup SR5 4x4
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@Darkbrador said in FJ is F'ing but not J'ing. Open lung surgery. Or the carburetor bowls behaves like my bank account:
So basically the carburetor behaves like my bank account. It empties faster than it can replenish.
You could remedy that with less
spendingthrottle, right? Why bother fixing it when you can work around the problems
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https://forum.ih8mud.com/threads/fj40-stalling-fuel-pump-problem.227103/post-3433190
"There was a local guy here with a 40 that had a similar problem. He had a small hole in the bladder of the fuel pump, and once it warmed up, it would leak, and fail to pump. Once his rig cooled back down, it would start and run again. If the sight glass is empty, you've ruled out the fuel filter, and you've checked the tank for obstructions, it sounds like the pump is the culprit to me."
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@PowderHound the bowl empties really really fast, I don't believe the fuel level will change much. It's a legit parameter but the fuel pump replacement will come first.
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@Darkbrador I had some similar issues with my 22r but replaced so much that it’s hard to pinpoint what it could have been. The spacer/gasket below the carb was one thing that seemed to help. Also did a new spacer on the mechanical fuel pump and new hoses when I replaced that
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@Throwaway from 7-gallons per mile to approximately 11ish-miles per gallon?
That looks expensive ...
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@Darkbrador said in FJ is F'ing but not J'ing. Open lung surgery. Or the carburetor bowls behaves like my bank account:
@Throwaway from 7-gallons per mile to approximately 11ish-miles per gallon?
That looks expensive ...
But think of the savings! As you drive literally dozens of miles a year!
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@Darkbrador it's not the miles per gallon, it's the ease of use. You turn the key and start the car. The next time you get in it's the same process.
7 mpg to 11 mpg is an increase of 35%.
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@theturbomrt one might actually be able to drive the fucking thing if it runs.
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@Throwaway 7 gallon per mile to 11 mile per gallon is actually a 7600% improvement.
There is no reason this thing can't run properly with a carb. It did for a long time. It will do it again soon ...
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@Darkbrador Yeah it's not like they are hard to get to work, I was just offering up an alternative to 1885 technology that may be of interest. It won't happen again.
