Jump to content
SAU Community

Petrol Leaking From Bottom Of Car (r33)

Detour

By Detour,
in General Maintenance

 Share

Recommended Posts

Detour Explorer

Detour

Posted
Posted

Hey guys

I was filling up my car to full today and i realised beneath me there was petrol. I looked under my car and it was leaking fuel by the time i filled up i would lost an easy litre and there is a smell of petrol fumes which my mechanic had stated it was coming from the boot where the fuel tank is. At the moment i get approx 250 km per full tank but at first i thought it was linked to my transmission not kicking into overdrive when driving at 100km. what is wrong with my car?????

pls help

thanks in advance

blind_elk Grand Master

blind_elk

Posted
Posted

Does your car have an aftermarket fuel pump? It may be that the O-ring that seals the fuel pump panel is perished or mis-aligned.

Check the restrictor neck (where you fill) has been installed correctly. It should be "sandwiched" between the body and the fitting that takes the fuel cap.

Detour Explorer

Detour

Posted
  • Author
Posted

Thanks for your help guys

No it is not leaking from the boot it was leaking underneath the car. I also checked the boot when i saw it leaking and it wasnt leaking from the boot next to the battery. I drove home and checked if it was leaking but it stopped.

Also, the guy i had bought the car from had an aftermarket fuel tank or surge tank or whatever it is but he removed it from the car so i was thinking he didnt remove it correctly thats y it is leaking?

Beer Baron Grand Master

Beer Baron

Posted
Posted

are you sure it wasn't just the little overflow from being overfilledd? the filler neck has an overflow thing in it and this dumps the fuel out under the car.

JamesK Experienced

JamesK

Posted
Posted

Beer baron yea but even if he did over fill he shouldn't be getting 250 per tank thats shocking, I get 300 and I know somethings wrong, replacing the O2 sensor hopefully it's that

Detour do you notice fuel on the ground when you park? or less fuel in your tank *keep in mind the fuel gauge reading is altered by the temp outside and the engine*

Japanese dino Rookie

Japanese dino

Posted
Posted

Hi,

I had a similar problem. It turned out that the seal on top of the fuel tank was leaking, but only when you the tank was filled to the full mark. A small amount would leak over the top of the tank down the sides and then directly underneath the car.

Remove the inspection plate located in the boot. This will reveal the access to the top of the tank and fuel pump. Go to your local servo and fill up your tank till it's full. Keep an eye out on the top of the tank and if you notice fuel pouring out of the top (trust me you will notice it) then its a good chance that it's the seal. It would also be a good idea to check all the fuel hoses going to and from the tank and check for wear or cracks.

Hope this helps

Regards

Hey guys

I was filling up my car to full today and i realised beneath me there was petrol. I looked under my car and it was leaking fuel by the time i filled up i would lost an easy litre and there is a smell of petrol fumes which my mechanic had stated it was coming from the boot where the fuel tank is. At the moment i get approx 250 km per full tank but at first i thought it was linked to my transmission not kicking into overdrive when driving at 100km. what is wrong with my car?????

pls help

thanks in advance

jarrod83 Community Regular

jarrod83

Posted
Posted

can i ask does the rear of ur car always have a fuel sorta smell.. cause im having a similar problem.. when i fill it up it overflows.. and it always a fuel sorta smell to the rear of the car n also get terrible fuel mileage.. usually around 250kms/tank

anyway im going to have a look at some of the suggestions tomorrow and see if i can fix the problem

Shadz Collaborator

Shadz

Posted
Posted

I had a similiar problem on my R33. It was the hose coming from the fuel pump to the connector under the car. It was split in the middle, so the only way I picked it up was by having someone look in the access panel in the boot with a torch, and then I was turning on the ignition to prime the fuel pump. Because it was wet under the car while it was off, but you could only see the leak when the car was on.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Ozdavroz
      Best Skyline ever

      By Ozdavroz · Posted

      Oh man what a deal.... Funny enough (well not really) I sold a car to some old dude (buying for his Daughter) on a Saturday, He asked if she could take the car now and pay me the money on Monday as the bank wasn't open. Needless to say I told them to come back with the cash or get f**ked! Luckily the money seemed to magically appear in his pocket a few minutes later, so it all ended well (for me).
    • Skidmore
      Leather Gucci Bag With Receipt

      By Skidmore · Posted

      Gucci bags tend to hold their value well, so someone’s definitely going to get a nice find here.
    • Skip33
      Best Skyline ever

      By Skip33 · Posted

      @Ozdavroz Not going to get a better deal than that. Cash up front and ongoing payments. 🤑
    • MBS206
      Starting again

      By MBS206 · Posted

      I wouldn't even move it like gTSBoy is saying. I'd seriously do what Duncan is saying. Unplug the injectors, and unplug the fuel pump.  Pull the spark plugs out. Have a look in quickly with a bore scope if you want. At most, you can't spray a bit of oil into the bores so there is lubricant in there while you crank it. (Don't fill it, as it's only going to enter the exhaust, or spit at you out the spark plugs holes. Before cranking the engine on the starter, after a 5 year sit I'd probably prime the oil system manually. Easiest way to do so is to look at buying an oil filter relocation block, fit it to the engine. The pressure line going into the engine on this block you can then shove into some sort of oil pump, or put it into a bottle, with that hose going to the bottom. Fill bottle up with oil. Now seal the bottle and add a compressed air line to the top of the bottle. Feed compressed air in, about 20psi will be PLENTY. This will pump oil through the motor. Be aware, it also means it will drain back to the sump, so make sure you don't end up over filling the motor Now bolt the old oil setup back on (or fully install the remote filter system).   This way you've at least pushed fresh oil everywhere, then you're letting the motor crank to then do its own oiling. Then I'd tap the key to make sure it can start to crank, if the motor free bumps, then I'd just hit the key and let it crank. After letting it crank and seeing you can get real engine oil pressure, put new spark plugs in, reconnect the fuel system electrics, and send it.   Additionally, you can look to remove the fuel feed line to the rail, and divert it to a tank so you can get the bottom of the tank shit out, and just incase there's some crud sitting anywhere that gets passed the fuel filter (or is already ahead of it).   If fuel injection at the injectors ends up appearing to be a problem, you can dump the injectors into an ultrasonic cleaner for a quick flush clean out. Note this isn't as good as new injectors, or getting them pro cleaned and flowed    
    • Erelyes
      Jeff R32 Build

      By Erelyes · Posted

      All I can say is, that's still bloody awesome! No plans on caging it I'm guessing?
×
×
  • Create New...