air lock in fuel tank 100 series

Submitted: Wednesday, Jul 11, 2007 at 21:55
ThreadID: 47642 Views:4704 Replies:11 FollowUps:1
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Do any of you fellow four wheel divers experience air locks when refuelling your 100 series diesel? Any information happily appreciated. Thanks, cheers Marion
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Reply By: Mick - Wednesday, Jul 11, 2007 at 22:03

Wednesday, Jul 11, 2007 at 22:03
What do you mean by an air lock Marion? Is it fuel blowing back out of the filler? If so it's more likely a fault with the bowser than the car. Just a bit more info though and you might get a solution. Cheers
AnswerID: 251978

Reply By: Marion - Wednesday, Jul 11, 2007 at 22:32

Wednesday, Jul 11, 2007 at 22:32
Thanks for this, when filling all the air is not coming out through the breather. Some air is still in the tank, if you wait 5 minutes the air adventually comes out and you can add up to another 20 litres. Is there a trick to fill.
Cheers Marion
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Follow Up By: Mick - Wednesday, Jul 11, 2007 at 22:50

Wednesday, Jul 11, 2007 at 22:50
That's really odd Marion and sounds like a blockage somewhere in the venting. 20 litres is a long way short of full and to have to wait 5 minutes suggests a fault. There can be no tricks - not like leaning a bike over to get that last bit in - after all it's just you and the pump. Good luck in getting it remedied!
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FollowupID: 513048

Reply By: stocky - Wednesday, Jul 11, 2007 at 23:52

Wednesday, Jul 11, 2007 at 23:52
I have same prob with my 100 Series Std Wagon - HATE THE DAMN THING!

Seems to be bigger problem with the "hi-flow" bowsers in many country towns - the truckies love em - I Hate em

Seriously - can take 10 min to get last 20 litres in!

New Patrol - NO PROBLEM!

:-)
AnswerID: 252008

Reply By: Member - Bucky (VIC) - Thursday, Jul 12, 2007 at 06:51

Thursday, Jul 12, 2007 at 06:51
Try light presure on the trigger and purposfully slow down the filler, after about 3/4 full.
I have this problem, although not as bad with our Navara, at hi flow bowsers.
Its a bit of a pain, but tricking the system to slow flow, seems to do the trick
Cheers
Bucky
AnswerID: 252016

Reply By: pt_nomad - Thursday, Jul 12, 2007 at 07:02

Thursday, Jul 12, 2007 at 07:02
Hi Marion,
I have a 105 standard ( only for 2 months) and have not had any problems filling either tank. I dont konw for sure about this tank, but some other thatn I have worked with have breathers at the top of the tank, esp if the filler goes into the side of the tanks rather than the top.
If the filler goes into hte side the ther may be air trapped in top of the tanks that needs to be vented to allow fuel to fill the space. If this were the case, a blocked or constricted breatherr would explain a slow fill on the last portion of the the tank. Your yota mechanic would be able to advise / recrify I'd expect.
Paul.
AnswerID: 252018

Reply By: Andrew from Vivid Adventures - Thursday, Jul 12, 2007 at 08:55

Thursday, Jul 12, 2007 at 08:55
Common problem... try to have it so that it the driver's side is lower.

Do not use the fast fill pumps (those with fatter nozzles) unless you are very patient.

Ensure that the nozzle is right down low in the filler pipe(s) not just the entry area because the breathers come up inside the pipes about an inch down from the top of the pipe - look in and you can see it on the passenger side of the pipe. If you cover the breather with fuel it won't breathe (surprise suprise) and guess what - it locks up.

I have no problems with the Longranger replacement tank which replaces the sub-tank - it has a short filler pipe that dumps directly into the tank without the little non-return flap at the bottom - works a treat. I don't know why Toyota insist on using non-return flaps ...

Cheers
Andrew.
AnswerID: 252027

Reply By: Member - Sam (NSW) - Thursday, Jul 12, 2007 at 10:52

Thursday, Jul 12, 2007 at 10:52
I rock the vehicle from side to side to help get it to settle and let the air out. Slow filling also helps.
AnswerID: 252041

Reply By: Member - Shane D (QLD) - Thursday, Jul 12, 2007 at 16:52

Thursday, Jul 12, 2007 at 16:52
I have owned an '05 HZJ 105 since august 06 done 25000kl thru western QLD , NT ,eastern WA back to QLD via VIC always used hi-flow pumps(where available) and never had any probs filling up,its gone in as fast as the pump can deliver .
I don't know if my 05 model is any different than earlier models.
AnswerID: 252077

Reply By: Pete and Lez - Thursday, Jul 12, 2007 at 19:04

Thursday, Jul 12, 2007 at 19:04
Hi Marion, Have 2002 hzj105 and have not had any problems. There was a recall in 2003 to have the filler holes replaced with larger holes, has yours had this done? Easy to tell, if you can fit the high volume filler nozzle into the filler holes you have had the upgrade done, I assume you can actually fit the large nozzle into the filler holes.
Cheers Peter and Lez
AnswerID: 252103

Reply By: Mikee5 (QLD) - Friday, Jul 13, 2007 at 13:08

Friday, Jul 13, 2007 at 13:08
Hi Marion, you are not alone. It is worse than burping a baby. I have tried filling front first or rear first, still the same. Now I put 20l into front then 10l into rear then 20 more into front etc. Diesel is by nature foamy, so fill about half speed on the pump. When foam starts to show in each filler neck slow the pump down. My wife likes to rock the car while I am filling the last bit, I don't think it helps but it gives her something to do. I can always completely fill the tanks but it takes a while. As was said above if you can find a pump that gets the driver's side of the vehicle lower it helps enormously. Lastly if you rush it, the thing spits diesel at you so stand to the side a bit. A bit like reflux on that burping baby.

smile at the queue behind you waiting for the pump too LOL

Mike.
AnswerID: 252203

Reply By: Marion - Friday, Jul 13, 2007 at 22:10

Friday, Jul 13, 2007 at 22:10
Thanks everybody, Ron now feels a lot better. He thought it was his technique, but alas we have tried all the above plans and it seems patience is the answer.
Thanks again
Marion
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