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Oil In Cooler Pipes

Mark-R33

By Mark-R33,
in General Maintenance

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Mark-R33 Contributor

Mark-R33

Posted
Posted

hi all,

i just purchased my r33 gtst 2 weeks ago, n noticed a small oil leak on the floor, became bigger everytime i drove it and had a look at the prob 2nite..

there was 4lts excess oil put into the motor that i drained out, the car does run smooth and fine, with no misses, but does drink a fair bit of feul (60bucks to fill and only 280km's? grandma driving).

i cleaned out all the piping from the cooler to t/b, but didnt get to to the other side.... i then took it for a test drive to come back and find it dripping again, coming out of 1 of the welds on the cooler piping that goes to the t/body.

car has done roughly 100,000km's, and will get compression tested on saturday

could this be blow by? or just the car having 4litres excess of oil?

mods are gtr cooler, zorst, pod, feul pump(unknown but big), stock boost

please help asap, as i still hava 3month warrenty

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SECURITY Grand Master

SECURITY

Posted
Posted

firstly i'd replace that pipe with the dodgy welding.

it could be blow by.. best way to tell would be to get a catch can properly installed.

the compression test will tell you alot though.

it could also be a blown oil seal on your turbo.

RANDY Veteran

RANDY

Posted
Posted

I agree with a possible turbo oil-leak. There will always be a little bit of oil coating the intake pipes, and depending on how much blow-by you have coming back, it could build up like that.

The fuel economy might be something else, but you should really get that weld looked at, as Security said.

Marlin Grand Master

Marlin

Posted
Posted

4 litres of EXTRA oil? Wow, thats alot! That much excess oil is certain to cause the extra buildup of oil in the inlet tract due to an increase in crankcase pressure and would for sure be dipping the crank, so that may go someway to your terrible fuel consumption (dragging the crank through oil causes massive drag and oil mist on/in the engine).

But yeah, you need for repair the dodgy weld, and while your there spray a heap of carby cleaner through the inlet system to get rid of the oil, otherwise you might find yourself forever re-clamping blown-off 'cooler pipes.

Mark-R33 Contributor

Mark-R33

Posted
  • Author
Posted (edited)

thanx marlin,

any other reasons it consuming so much fuel? my mates get bout 400-450 kms from their r33's, me only 280kms :P

also the car is spluttering once it hits FULL boost?? i regapped my spark plugs to 1.1, but i might put em down to .8?

Edited by Mark-R33
cowie165 Veteran

cowie165

Posted
Posted

The fuel economy could be the O2 sensor. If at all possible, beg/borrow/steal a consult cable and see how the motor runs. The O2 sensor readout should oscillate with the lowest amplitude less than 0.4V and the highest amplitude greater than 0.55V. It should oscillate with a min frequency of 0.8Hz.

If the sensor isn't doing this, according to Nissan, it is stuffed and should be replaced.

Then again, if you have a bigass fuel pump, 280km/tank may be normal?

Mark-R33 Contributor

Mark-R33

Posted
  • Author
Posted (edited)

thanx for the help, managed to fix the car, and if ne1 has the same problem this might be a fix:

regapped plugs back to .8, and put tape around coil pak (like in the other thread), this got rid of the splutter on boost

the oil problem was due to the fact that the dikhad put 2much oil in, hopefully its all good

a compression check was also completed, the results are:

C1 C2 C3 C4 C5 C6

160 162 161 160 164 162

im guessing this is good coz they r fairly similar????

Edited by Mark-R33
SECURITY Grand Master

SECURITY

Posted
Posted

yep. good even, high compression.

you'll find that the tape only works for a few days/weeks maybe.

clean out the inside of your coils with a dremil drill (very lightly!!) just to get the build-up of crap off the inside of them.. or you can try steel wool.

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