hatda02

Hi everyone.

I have an 87 4WD w/22R

Last Friday I went to pick up a new bed for my son. I was almost to my destination when my truck started to sputter on the highway. I down shifted and she started going again. The same thing happened about 1/2 mile later and again a 1/2 mile after that where she finally died.

Lucky for me a really cool guy in a......Ford.....(that killed me) pulled me from a dangerous exit ramp along the highway to an open parking lot. Once there I popped the hood and started checking for fuel problems because that is what it felt like. I pulled the soft line from the pump to the carb and no fuel flowed back out. I sparyed a little starting fluid in the carb and she ran until it was used up. I figured it was pump or filter.

There was a Pep Boys about 1 mile away so I started walking. I got the parts and wouldn't you know the pump from them was missing the spacer/block that goes between the gaskets for the pump....they threw in three gaskets instead of two gaskets and the block/spacer....and mine shattered from age when I removed the old pump.

My wife picked me up on the way home from work and a 20 minute job became a 4 hour job. I got another fuel pump at another store and got the truck running. I picked up the bed and when I got home the gas gauge was reading a lot lower than expected. I found the soft line going from the fuel filter to the hard line was cracked from age. The next day I went and got about 6ft of new hose and replaced the soft lines going from the tank to the filter, the filter to the hard line that routes to the engine, and the four soft lines at the fuel pump/carb area. Leak was gone.

On Monday I had my truck out in the yard moving some block. I had to make seven or eight trips and each time the truck did not want to idle and when I shut it off it wanted to keep running. It seemed to run okay once it was going, just the idleing and turning off was a problem.

On Tuesday I wanted to go pick up more furniture and it would not run for anything. It seems like it is getting too much gas. I started the truck like I always do (1 pedal push to the floor) but it would not do anything. I cranked for about 45 seconds off and on....about 5 to 10 seconds of cranking 4 or 5 times. I popped the hood and could smell gas. I pulled out the air cleaner and there was gas all over. It seems like it is getting too much.

Is there an adjustment? Could I have gotten a bad/wrong fuel pump? Any suggestions?

Thanks as always!
Dave

hatda02

I've been working on this more. I found a nice site with info on the 22R carb. I checked the fuel cut selinoid and it appears to be fine. I tried to adjust the idle mixture and still the same. The truck will only run at WOT and it is running rich as can be.

It almost seems the fuel pump is sending too much fuel.

fillsrunner4

Could it be the pressure regulator?

abecedarian

check the float. I've seen it happen (though not on toy's) that emptying the fuel bowl can cause the float to stick down and not shut off the fuel when the bowl is full.

idanity

would you please link the site for the 226 carb
i gotta rebuild mine soon as mine has the choke and idle reversed...
just replaced my fuel pump sunday, and filter too..
did fuel pour out of the line when you did teh filter ??

hatda02

I don't think there is a pressure regulator on it. Where would it be?

When I look through the sight glass it is completely full with fuel and not between the marks like it should be. I opened up the top of the carb and checked the float. I don't see anything wrong with it; it seems to move freely. This carb is only about a year or two old after a rebuild. The insides still look good (I only put about 500 miles a year on the truck).

Is it possible the fuel pump is pushing too much fuel and the float is being forced down from too much pressure?

abecedarian

the fuel pump should have a return line to the fuel tank so check that for obstructions.

hatda02

Oh....and I left out the most interesting part. After putting the top of the carb back on after checking the float, I *thought* I hooked everything up. I jumped into the truck and she fired right up...was idleing perfectly just like old times. I got out of the truck to look at where the gas level was through the sight glass and noticed I forgot, of all things, to hook up the fuel line from the pump to the carb.

The truck was running off the little bit of gas in the bowl that was still in the carb. This is why I mentioned thinking the pump might be pushing too much fuel in.

abecedarian

well, that's nice to know, but did the engine keep running right after you sealed up the carb?

abecedarian

I mean, after the mistake, you put the carb together and...

oh wait, that mistake was when you first posted so obviously it didn't work right and had too much fuel (full sight glass). well...

sorry... but back to the float.

abecedarian

the pump always pushes too much fuel. if it didn't, you wouldn't have enough when you need it. the float meters fuel from the pump into the carb. if the float bowl is too full, it's a float / needle valve problem... or the fuel pump is way bad.

Crawdad

Abecedarian is right - the fuel pump is supposed to push way more gas than the carb can take - the float shuts the fuel off and redirects it to the tank via the return line when the bowl is full. Like he said earlier, check that return line and make sure it ain't plugged or kinked or coming apart with age. If that line is plugged it can force its way into the carb anyway, even if the float is doing its job.

hatda02

Here is what I did this time. I pulled the return line and blew through it. Nothing seemed to be happening. I pulled it off in the rear and I could blow gas back through it. Just to be sure it was nothing in that last foot or so I ran a hose from the return on the pump to a bucket under the truck....the hose was about 4ft long. The truck still crapped out when fuel was hooked up to it. I think this eliminates the return line.

I'm thinking like you....the fuel pump must be way bad.

Another question....I was looking at my crappy chiltons and they had a pic of a 20r pump and a 22r pump. My old pump looked like the pic of the 20r pump and the new pump looks like the 22r pump in the pic. Maybe this is just a picture issue....but that caught my eye.

Crawdad

Good test. Did gas come out of the rigged up return hose at all?

I don't know about Toyota carbs in particular, just a little about carbs in general, so I can't really help you on the pump differences.

When in doubt, go to the parts store and see what you can see?

abecedarian

when the carb is 'full', the float should shut off fuel and cause the pump to 'bypass' extra fuel into the return line. maybe the carb isn't completely shutting off the fuel supply- leaking needle valve. so you may have a surplus of fuel entering the carb and can still have some fuel being bypassed by the fuel pump.
so even though it may appear to be the fuel pump not bypassing properly, it could still be a prob with the carb.

hatda02

Yes, a good deal of gas came out of the return line....it was a very steady and constant flow. It looked right.

I think the easiest option is try the pump first since that is what was changed that caused all of this. If a second pump does the same thing then I'll have to look at the carb again.

bigt

got that link to the page on 22r carbs..my new project has one and i only "know" 22res

hatda02

Here it is....I hope it helps

http://www.bluebassdesign.com/boonin/carb_faq/#fp

KODE

check the fuel pressure regulator.... it kinda looks like an egr valve and its mounted by the manifold in the front side of the engine.

hatda02

Hi again. Just a final update for y'all that help me out. I called the place that I got the fuel pump and asked if they had another in stock. They said they did. The guy asked me the problem, I told him, and he asked me the brand I bought. I told him. He said..."well that's why. Those things are junk." "I can give you this one, but I would recommend something else."

I asked what else they had and he said he could order in a Bosch for about 15 bucks more. It took about a week to get in. I got it home and could tell from the very start the quality was twice that of the other one. Remember how I mentioned above the pump I bought looked different than the one I took off and the one in the book? Well the Bosch looked EXACTLY like the stock one and the pic in the manual. I got the pump installed and the problem was gone. Runs like a champ again.

Thanks for the advice once again fellas!