Toyota Innova Gas Tank woes

[dongding79]

hindi kaya dahil sa e-10 gasoline na kinakarga natin kaya nagkakaproblema ang mga gas tanks ng innova. may mga nabasa kasi ako na nakakasira daw ng gas tank ang gasoline na may e-10 blend.

[Mile2]

hindi kaya dahil sa e-10 gasoline na kinakarga natin kaya nagkakaproblema ang mga gas tanks ng innova. may mga nabasa kasi ako na nakakasira daw ng gas tank ang gasoline na may e-10 blend.

Surely it is not from the E10 blend. It was the negative pressure build up on the tank when the engine is running which causes the deformation on the tank floor (sucking the floor inward), and when the engine is off the negative pressure is then released slowly and the the tank floor flips back to its original position. Constant bending and flipping of the tank floor would result to permanent huge dent plus crack on the cornered bends just beneath the tank "front" support strap. The huge dent and crack would always be visible beneath the front support strap.

The problematic leak area is uniform to every cases I have known and seen, and this is suppose to be a serious matter that Toyota should consider and have disclose.

I have spent the effort to put skid plates on the gas tank to prove that the dent was not due to accident but rather a faulty fuel system which should be covered by warranty but still I battle my claim that took more than a month before they replace my 2nd gas tank plus charcoal canister and filler cap.

[crazy_boy]

Surely it is not from the E10 blend. It was the negative pressure build up on the tank when the engine is running which causes the deformation on the tank floor (sucking the floor inward), and when the engine is off the negative pressure is then released slowly and the the tank floor flips back to its original position. Constant bending and flipping of the tank floor would result to permanent huge dent plus crack on the cornered bends just beneath the tank "front" support strap. The huge dent and crack would always be visible beneath the front support strap.

The problematic leak area is uniform to every cases I have known and seen, and this is suppose to be a serious matter that Toyota should consider and have disclose.

I have spent the effort to put skid plates on the gas tank to prove that the dent was not due to accident but rather a faulty fuel system which should be covered by warranty but still I battle my claim that took more than a month before they replace my 2nd gas tank plus charcoal canister and filler cap.

can we write a letter to DTI regarding this?

[badkuk]

hindi kaya dahil sa e-10 gasoline na kinakarga natin kaya nagkakaproblema ang mga gas tanks ng innova. may mga nabasa kasi ako na nakakasira daw ng gas tank ang gasoline na may e-10 blend.

if that's true, then other car brands should have the same problem. If not...then the problem would be specific to toyota.

if a gas tank can't handle ethanol blends, then it should be considered substandard. All the politics going on about where to source ethanol notwithstanding, we've already gone with E10 -- i hope we don't take a step back.

[leumas08]

Ano pong variant ang unit nyo? Gas or Diesel?

Ano pong unit nyo? Innova, Fortuner or Hilux?

Pag nagpalit kayo ng gas tank dapat palitan din yung Charcoal Cannister at Filler Cap kung hindi uulit ang problem within few months. Kung di napalitan yung Charcoal Canister at Filler Cap, silipin mo yung gas tank mong bago kung may deformation na, pag may deformation na bilang ka lang ng ilang buwan at magkakaroon na ulit ng leak yan dahil punit na yung pinaka-kanto.

Ganyan din yung first gas tank replacement ko sabi ng casa tinaman daw ng bato kaya sa insurance ko pinadaan ang replacement. And then nagpagawa na ko ng skid plates to protect the tank pero umulit ang problem without a scratch sa skid plate, deform ulit ang gas tank while intact ang skid plates. Eto yung ipinalaban ko sa warranty claim on the 2nd gas tank, walang reason na tinamaan ng bato kasi buo ang skid plates.[/QUOTE]

Toyoyal Innova - Gas po. na palitan naman po tapos nung sinubukan ko po bukasan yng filler cap may pressure po pero palabas naman does it mean na ok na po yun? kailan ulit kailangan ipacheck/maintain yng charcoal cannister and filler cap?
Thanks

[SRGuy]

Until now ba issue pa din ito sa mga new models? o na-address na ito ng toyota?

Thanks!

[Jun_G.]

Hello po mga kabayan,

Bago lang po ako dito, OFW at bibili po ng 2nd hand na gas innova sa bakasyon ko po.

Nirefer po ng kasamahan ko itong site na ito at kahit papano ay naging aware na rin po sa gasoline tank problem ng innova, salamat po sa tsikot.

Ang tanong ko po, bukod sa gas tank e wala na po bang ibang problema sa innova gas? Sa mga nagpalit na po ng Tank, Charcoal Canister at Filler Cap, bumalik po ba ung problema? If di na po bumalik, magkano po kaya lahat ang magagastos if not under warranty na ung unit?

Pasensya na po sa madaming tanong. Salamat po in advance.

[willsmith]

Been torn between an innova gas and diesel for quite sometime. With d4d diesel woes not yet resolved, got an innova G '05 vvti a/t, and planning to convert it to greenfuel lpg autogas as gas variant is the "safer" choice for used vehicles. Until i learned here that vvti has also its share of "woes"- a leaking gas tank! Just below your *ss. Whew.
I hurriedly (near panic) made a visual inspection and made the following findings:
1. The gas tank is unexpectedly huge almost covering the entire vehicle making it more dangerous not just for the drivers but all occupants as well in case of fire from the leaking gas tank.
2. There is no visible sign of deformation, from front to end. But I noticed a circular mark the size of a ten-peso coin with an arrow pointing to it. Dunno what it is but that is the only visible abnormality i saw.
3. I inspected the filler cap and its all made of plastic. i noticed that it is very clean and no sign of dirt whatsoever. The plastic filter has six holes in it.

Now, the questions to the experts:

1. Is it possible that my gas tank system has already been replaced? The previous owner who is a japanese executive can't be of much help here.
2. Does my filler cap already the newer ones with larger holes in it?
3. What test/signs could i do/observe to determine if i have already the symtoms of the dreaded vvti gas tank woes?
4. Will changing the charcoal filter and filler cap assuming that the tank is not yet deformed, be a guarantee for safety?

any opinion, expert or otherwise will be highly appreciated and a lifesaver for any innova gas owner.

[Mile2]

*willssmith

One of the usual sign that you have a gas tank warping syndrome was you will hear a loud metal popping sound underneath after you park and turn off the engine in about 10-30 minutes. Weekly or bi-weekly check of your gas tank floor may also help to avert prolong compression and decompression of the gas tank that would lead to breakage of the corner bends of the gas tank.

Replacing the charcoal canister and filler cap now will not guarantee that you will be spared from the problem.

I red somewhere that to avoid this was not to make full tank up to the filler cap, which I think was my practice before. To date I don't do that daily full tank and does not encounter the problem anymore,1/2 tank fill now is my practice since I'm an LPG user.

[willsmith]

Thanks *Mile2

by my layman's analysis,i observe that not having a full tank regularly is the simple solution to the problem as the fuel delivery system of the vvti is creating a vaccum by reintroducing gas vapors thru the charcoal canisters to maximize fuel eficiency. But in the process created the so-called gas tank woes as the tank design did not cope up with it. If a full tank is unavoidable, its a good habit to open the filler cap once in a while to release the built up pressure therefore relieving the tank to absorb it for long. Ive done it myself and noticed a whossing or popping
sound (not really sure though) revealing the pressure building in the tank and that's only when it's just a quarter full.

and like our resident guru *Mile2, had also my lpg installed
and will not have a full tank of gas for quite a while.

[spyghost]

if its still unavoidable even if the charcoal canister and gas tank is replaced, then the flaw is in the tank design - tank shouldn't warp easily even if in sustained pressure - wheter postive or negative.

[Mile2]

I would agree that there's a problem in gas tank design. Point of fuel leakage and metal breakage was consistent - it is always underneath the front gas tank support.

[spat]

Oct 2008 purchased innova (facelifted) gas variant
Tanong ko lang kung kasali ba ito sa gas tank problem?
Balak ko munang palitan yung fuel filler cap pero hindi ko alam kung ito yung revised (mas malalaking butas). Hindi ko kasi alam ang ichura nung luma o bago. Papost din ng picture ng old and new filler cap kung meron. Salamat ng madami mga boss

[b3ndz]

so, ang solusyon for a brand new innova vvti is change to a lpg para wala na talagang problem sa gas tank? or nasolve na ang problemang ito by changing the gas tank design for the 2011 and up models? nalilito ako kung anu gagawin. hope someone can update the status of this problem.

[ericlopez]

I would agree that there's a problem in gas tank design. Point of fuel leakage and metal breakage was consistent - it is always underneath the front gas tank support.

Olus 1 here, replaced my fuel tank, replaced fuel tank lid cap, still popped, next i will drill a smll hole in my original lid cap so that negative pressure will not persist, problem is that i am not sure if it is safe.

[vvti2.0]

Can you post a pic of your new fuel tank lid cap?

If it just the same as the old one, it will give no improvement.

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Can you post a pic of your new fuel tank lid cap?

If it just the same as the old one, it will give no improvement.

[Retz]

perhaps Toyota Motors already made the necessary correction to this gas tank woes.

[spyghost]

2011 Innova G gas came with charcoal canister part number: 77704-0K010
2011 Innova G gas came wtih fuel cap part number: 77300-28010

is this the case of older models? can anyone confirm?

[Mile2]

2011 Innova G gas came with charcoal canister part number: 77704-0K010
2011 Innova G gas came wtih fuel cap part number: 77300-28010

is this the case of older models? can anyone confirm?

Don't know the part number for the 2005-2009 models but I have seen that the filler cap are not the same, 2010 model's filler cap have larger breather holes.

[spyghost]

Don't know the part number for the 2005-2009 models but I have seen that the filler cap are not the same, 2010 model's filler cap have larger breather holes.

The part number for the charcoal canister can be easily seen as a sticker on the body. As for the filler cap, I'll take a measurement of the internals later and post