The Resurection of 'The Beast' (1 Viewer)

[romegadave]

LOL..........

 

[Southeast Overland]

THAT IS FREAGGIN' HILARIOUS!!!!

CAN ANYONE DO BETTER?!?

 

[Southeast Overland]

My Piggie made it to GSMTR. I didn't get to drive any trails as they are temporarily closed but I did get a 7 hour road trip along with some local roads. She ran pretty well but I did encounter a few problems.

1 - intermittent idle - she doen't want to settle down to the same spot every time. dbenke helped me straighten out (literally) my choke cable which helped but she still wants to idle low at start-up (550) and then high after some driving (1000). Then at other times she will settle down right nice to 700...

2 - Pig wants to sometimes stall after I've been driving at speed (55 mph) for awhile and depress the clutch and start gearing down. She will just die. The brakes don't work too well then!

3 - gas tank is not venting properly. Every time I pull the cap I hear pressure in the tank venting. If the tank is full and sitting in the sun she will try to puke gas out the fill neck.

4 - She doesn't like to start after one of the stalls from #2. I popped the hood after one of these and the fuel bowl was pretty much empty.

I checked the tank for venting awhile back and didn't find any problems. I'm going to go through it again. I think 1, 2 and 4 might be linked to 3.

Unfortunately for the next few days my Pig is my DD. My FJC is in Atlanta and I have to go pick her up soon!

 

[yooper]

My Piggie made it to GSMTR. I didn't get to drive any trails as they are temporarily closed but I did get a 7 hour road trip along with some local roads. She ran pretty well but I did encounter a few problems.

1 - intermittent idle - she doen't want to settle down to the same spot every time. dbenke helped me straighten out (literally) my choke cable which helped but she still wants to idle low at start-up (550) and then high after some driving (1000). Then at other times she will settle down right nice to 700...

2 - Pig wants to sometimes stall after I've been driving at speed (55 mph) for awhile and depress the clutch and start gearing down. She will just die. The brakes don't work too well then!

3 - gas tank is not venting properly. Every time I pull the cap I hear pressure in the tank venting. If the tank is full and sitting in the sun she will try to puke gas out the fill neck.

4 - She doesn't like to start after one of the stalls from #2. I popped the hood after one of these and the fuel bowl was pretty much empty.

I checked the tank for venting awhile back and didn't find any problems. I'm going to go through it again. I think 1, 2 and 4 might be linked to 3.

Unfortunately for the next few days my Pig is my DD. My FJC is in Atlanta and I have to go pick her up soon!

I agree #3 is probably the problem. I had the puking on a hot day problem once or twice myself. One time I got sprayed in the face with gas when I opened it at a gas station.

Not sure what to do - maybe get a venting gas tank cap?

 

[Southeast Overland]

I agree #3 is probably the problem. I had the puking on a hot day problem once or twice myself. One time I got sprayed in the face with gas when I opened it at a gas station.

Not sure what to do - maybe get a venting gas tank cap?

The cap it came w/ vented...sorta. It wouldn't release pressure enough to keep build-up from happening but would release fuel out - guessin' it didn't seal well enough...

New OEM cap keeps fuel from backing out the fill spout but pressure is still building up.

I unhooked the vent line in near the engine and was able to blow both directions - into the driver A-pillar where it is supposed to exhaust and back into the tank. Neither direction was 'free flowing' but air did move.

I already took the fuel vent system apart once in the rear driver's quarter and everything seemed to work but it was a quick job. I even checked the one-way check valve and it worked so I reassembled and called it good - maybe it wasn't good.

After I get the grass cut this evening I'm going to tear into it and see what I can find. I'm going to go ahead and replace all the rubber fuel line while I'm in there too just because.

 

[yooper]

My concern is that the restriction is where the vent system attaches to the tank, like inside the tank. There is no good way to fix that without removing the tank, a big PITA...good luck!

 

[CandyPants]

Interesting discussion. While at GSMTR with Steve and his pig, mine started to behave badly as well. After a carb cleaning and change of fuel filter, I am beginning think that this little piggy has a venting issue as well. I really noticed it this trip, what with it being like a zillion degrees outside. Stopping for gas and I got a hand full of gas when I unscrewed the cap. Hmmmm....

 

[Southeast Overland]

Thanks Yoop.

Yup - k9 and I had some similar stuff going on. Its also getting hotter w/ more sun which will exacerbate venting issues from what I've seen.

I'm going to tear into this tonight (hopefully).

- check venting from engine bay into exhaust hole under driver's floor in body mount (seemed OK this weekend)
- check venting from engine bay back into tank (seemed OK this weekend)
- check fuel pump weep holes for fuel, I've noticed some 'wetness' on top of the 76 pump which might tell me it is going bad
- replace all rubber fuel lines
- check check valve in rear driver's quarter - I did this awhile back and it seemed OK - they are pricey to replace from Toyota
- check fuel vapor separator - gotta figure out how to do that
- when all that is done I'll put a new fuel filter on

All that is pretty cheap except the fuel pump. I'm pricing those now. ($ is tight)

Next will be to drain and drop the tank. I've had several people say "what the heck happened to your tank?" Seems it is a weeee bit dented - like from the inside out! That could cause the coating to crack and dislodge. I'll check the inside of the tank and will probably buy a used tank to have boiled and coated. If I do that then pretty much my entire fuel system will be new or serviced.

 

[Trollhole]

Thanks Yoop.

Yup - k9 and I had some similar stuff going on. Its also getting hotter w/ more sun which will exacerbate venting issues from what I've seen.

I'm going to tear into this tonight (hopefully).

- check venting from engine bay into exhaust hole under driver's floor in body mount (seemed OK this weekend)
- check venting from engine bay back into tank (seemed OK this weekend)
- check fuel pump weep holes for fuel, I've noticed some 'wetness' on top of the 76 pump which might tell me it is going bad
- replace all rubber fuel lines
- check check valve in rear driver's quarter - I did this awhile back and it seemed OK - they are pricey to replace from Toyota
- check fuel vapor separator - gotta figure out how to do that
- when all that is done I'll put a new fuel filter on

All that is pretty cheap except the fuel pump. I'm pricing those now. ($ is tight)

Next will be to drain and drop the tank. I've had several people say "what the heck happened to your tank?" Seems it is a weeee bit dented - like from the inside out! That could cause the coating to crack and dislodge. I'll check the inside of the tank and will probably buy a used tank to have boiled and coated. If I do that then pretty much my entire fuel system will be new or serviced.

As I stated last night you just need to make sure the vents from the tank to the seperator are clear. Then make sure the seperator is clean and then just run a hose from the top of it down and out the rear quarter. This will at least tell you where your issue is.

You need to replace that tank. It's junk and unsafe. Really unsafe.

 

[Southeast Overland]

You need to replace that tank. It's junk and unsafe. Really unsafe.

10-4

I just came over here to say that!

I saw a pic that LC_Hamma posted up of a tank for sale and couldn't believe how bad mine was compared to his!

I sent you an email.

 

[Trollhole]

Interesting discussion. While at GSMTR with Steve and his pig, mine started to behave badly as well. After a carb cleaning and change of fuel filter, I am beginning think that this little piggy has a venting issue as well. I really noticed it this trip, what with it being like a zillion degrees outside. Stopping for gas and I got a hand full of gas when I unscrewed the cap. Hmmmm....

Same issue as Steve. If you have gas spitting at you when you remove the gas cap you are building up pressure in the tank from the gas getting hot while driving and expanding that 20 some odd gallon tank like a balloon.

Easiest way to troubleshoot the venting system is to take the gas cap off and run it and see if you can reproduce the issues. Another way is to buy a cheap gas cap and drill a hole in it. Little safer but I wouldn't recommend it for daily driving and definitely not wheeling as gas will pour out at angles.

If you don't have a charcoal canister the best way is to vent it in the back. That being said you have to run a loop on the filler side D pillar almost to the roof. Then back down under the truck and over to the passenger side D pillar roof and back down and out the rear quarter. Do it this way and there is no way for the fuel to come out in the event of a roll.

 

[Southeast Overland]

Checked everything (I think).

Some of the hoses were in good shape - some not so much.

All hoses seemed to flow the correct way - some better than others.

Check valve only flowed one direction.

Fuel/vapor separator flowed all directions.

Air flowed whether the gas cap was on or off.

Gas cap is new OEM.

I'm replacing the tank and all lines. I don't plan on replacing the check valve as it seems to work. You can't blow much at all if anything one way - the other way you can blow, feel a valve open and then some air goes through but there is some restriction. It seems like there would be enough to release pressure.

All 4 lines flowed easily into the tank.

When I got home today from work I could hear a slight 'whistle.' When I cracked the gas cap the whistling stopped.

Sumptin' ain't right.

I'm thinking the gas tank is crap and the flow might not be enough venting out the front of the truck under the driver's floor.

When I have all the lines off I'm going to blow everything out with compressed air.

I'm gonna skip the 'try to run it with a new vent line out back until after I put in the new tank since I have to have a new tank anyways. If it still messes up after the new tank I'll then troubleshoot more.

 

[FJ40Jim]

Remove & discard the check valve. It is not helping the situation any. Just let the tank breathe directly through the charcoal canister.

 

[Southeast Overland]

Remove & discard the check valve. It is not helping the situation any. Just let the tank breathe directly through the charcoal canister.

10-4

I thought about replacing it - but it was pretty expensive IIRC - around $40 or more from Toyota.

I don't have a charcoal canister installed - just the fuel/vapor separator thingy (black plastic w/ 4 connected vertical tubes).

I do have a spare charcoal canister from a FJ60 (larger than the 55 canister) that I could install and have thought about. Due to its size it would be a tight fit in the engine compartment. I thought about putting it in the driver's rear quarter but haven't test fit it yet but I think it would be too large.

 

[Trollhole]

Remove & discard the check valve. It is not helping the situation any. Just let the tank breathe directly through the charcoal canister.

X2 it's not needed. Your desmogged anyway. Most likely the check valve is allowing air intot he system when it's cold but no air out when it's hot. So it just keeps filling up like a balloon.

10-4

I thought about replacing it - but it was pretty expensive IIRC - around $40 or more from Toyota.

I don't have a charcoal canister installed - just the fuel/vapor separator thingy (black plastic w/ 4 connected vertical tubes).

I do have a spare charcoal canister from a FJ60 (larger than the 55 canister) that I could install and have thought about. Due to its size it would be a tight fit in the engine compartment. I thought about putting it in the driver's rear quarter but haven't test fit it yet but I think it would be too large.

Skip the charcoal canister. That's just one more peice of crap you have to worry about now. I'd only install one back after you know you have your other problems solved. And even then I probably wouldn't do it.

 

[Southeast Overland]

X2 it's not needed. Your desmogged anyway. Most likely the check valve is allowing air intot he system when it's cold but no air out when it's hot. So it just keeps filling up like a balloon.

Skip the charcoal canister. That's just one more peice of crap you have to worry about now. I'd only install one back after you know you have your other problems solved. And even then I probably wouldn't do it.

Gotcha.

Come to think of it the sound that the check valve makes when I blow (hard) through it is kinda close to the 'whistling/whining' sound I hear when pressure has built up in the tank and is barely bleeding off somewhere.

ETA: Troll - I'll pick that tank up from you as soon as I have my FJC back from ATL - probably Mon.

 

[FJ40Jim]

In lieu of a canister, use a disposable fuel filter at the end of the tank vent hose under the hood.
Mount it up high & dry.

 

[Southeast Overland]

Well guys - its been almost a month since I've touched my Pig. I started my own 1-man consulting firm this month so I have had ZERO free time. Any free time I've had has been spent sleeping!

I did get a few hours this morning to work on my Pig. The next thing on the docket was to replace my fuel tank. 3 bolts holding the tank in came out fine - one broke off . I hate snapping off bolts. I'll have to figure out how to fix that later. I guess the best way will be to drill it out and retap the hole but I have horrible at that. Any other ideas? The 'body mount' that bolt is in (rear driver) is rusted through on the outside portion so I'll probably fix that while I'm in there along with wire wheeling and painting the frame while the tank is out.

I drained as much gas as I could out of the tank but there are probably a few gallons left. I left the Pig parked on a very slight hill - oops. Now here is another question. my exhaust is blocking the tank from dropping...any ideas besides hacking off the exhaust? It is only a few years old so I would hate to cut it if I didn't have to.

Oh, I'll pick that tank up from you this week Troll.

 

[Carp]

I can't believe that I didn't notice this when I was helping you at GSMTR, but did they seriously run the exhaust pipe so that it basically touches the tank? I would hack that thing and have it rebent so that it stays out from under the tank. Bad idea the way it is.

 

[FJ40Jim]

What carp said. The tailpipe should exit the muffler and go between the frame and the shock absorber, not inside the shock. Then it should stay close against the inside of the shackle and exit out the side, behind the shackle.