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Leaking Injectors

R33-RB26DETT

By R33-RB26DETT,
in Engines & Forced Induction

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R33-RB26DETT Proficient

R33-RB26DETT

Posted
  • Author
Posted

Hi guys,

I recently discovered that my stock injectors are leaking a little, and i want to go to Sanddown raceway for the first time and am really keen!

Is this a risk to go down with them leaking? could they catch fire?

Opinions needed... thanks guys.

PM-R33 Grand Master

PM-R33

Posted
Posted

Doesn't take much heat to ignite fuel, pushing the car to its limit might make the leak larger and fuel being high pressure won't take much to squirt around the engine bay a bit. Seriously it aint worth the risk.

The Dan Grand Master

The Dan

Posted
Posted
okay that's what i thought.. damn.

I'm surprised though because the injectors are on the intake plenum how would they ignite on the 'hotter' other side of the engine?

The don't ignite on that side. The injectors can blow out which means you won't be just weaping or slow leaking, it will pour out with force. It then runs very quickly down to the bottom of the engine, onto the sump and back towards the gearbox. From this point it can go two ways, one way leads to hot exhaust. 50% chance of it going that way, even better chance it will catch on fire.

Why don't you just replace them?

R33-RB26DETT Proficient

R33-RB26DETT

Posted
  • Author
Posted

bugger.

All good though i will just have to wait until i buy my bigger turbos, i already have all the other stuff lying around at home but dont want to have to pay for tuning twice!

I guess its just more incentive to buy those turbos quicker.

axe s Experienced

axe s

Posted
Posted

I have 6 stock injectors sitting under the house doing nothing if you wanna make an offer...

i wouldn't risk it, i had a small leak in my new system (fitting not seated properly) when i primed it, it covered my engine bay in about 2 seconds.

if it got any bigger your leak will be dangerous...

Keeper Experienced

Keeper

Posted
Posted
bugger.

All good though i will just have to wait until i buy my bigger turbos, i already have all the other stuff lying around at home but dont want to have to pay for tuning twice!

I guess its just more incentive to buy those turbos quicker.

take the injectors out and run them to a local shop to replace the orings on the tips, usually stops most the leaks from memory

The Dan Grand Master

The Dan

Posted
Posted
I depends you cant tell till you pull them out for sure though.

That may be the case. Pull them out and have them checked. You will know for absolute certain then.

Usually all you need to do is spray some carby clean around to clean the area then have someone start the car. while you watch the small hole in the side of the injector.

If it's the top seal, it will leak before the car is started. If it's the injector it'll leak once it starts. The bottom oring will only leak air, not fuel.

sIIgtst Rising Star

sIIgtst

Posted
Posted

hey i would take AXE S up on his offer.. just replace the injectors.. you can then still go track.

correct me if im wrong but driving a car at all either track or street with a leaking injector cant be good at all IMO..

I would sort this out asap.

Just my 2c

Beer Baron Grand Master

Beer Baron

Posted
Posted

you should not be driving it at all really. get it fixed. stock injectors are cheap to source. get them cleaned and flow tested too, new o-rings and whack them in. then away you go.

700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted
yes take it to the track! get all your mates to bring video camera's.. be sure to carry a fire ext and make sure you upload the fire to youtube.

+1...

Don't know how I missed this one............. :)

Oh you did forget to mention...if you admit you had leaky injectors and drove the car...insurance won't pay.

PHA71L Community Regular

PHA71L

Posted
Posted

i just had the same problem put in the sard 720s

with the pfc all my tuner had to do was load my map up, type in what inj they were and a few other numbers.... theres my old map with the new map for the 720s ready to go load it on... couple power runs to check all the air fuels perfect!!!

10min job cost me 150bucks and thats with putting the new inj in and all!

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