I've got an 89 z31 2+2 NA (UKK spec) and I've got a puddle developing on the road, had a look underneath and I can see 2 thin pipes running from what looks like some sort of small radiator under the rear bumper (not sure what this is and dont see it in the haynes manual), these 2 pipes run round the side of the fuel tank (passing above the filler neck) and as the start to curl round to the front end of the tank, one of the pipes just ends and this is where the fluid is leaking from, the other pipe continues down the car...to somehere and seems fine.

Anybody know where this broken pipe should be going? Or what this radiator like thing is under the rear bumper? Car is running fine but I can see some damp patches around this broken pipe which makes me think it is dripping when parked up but may be spurting out when I'm actually driving.

Hello mate.

Sorry i cant actually help with your problem.

welcome to the club tho, hopefully see you at some meets sometime, im from greenock.

You need to find out what the liquid is first, you should try and trace the pipe back a long the car. What diameter is the pipe.

 

Paul

cheers guys, aye hopefully get a long to some meets soon.

I am sure it is petrol and the pipes are only 10-15 mm wide.

If it is petrol I would not drive it until you cure the problem, it only needs a stray butt end to start a fire.

 

Paul

I've got an 89 z31 2+2 NA (UKK spec) and I've got a puddle developing on the road, had a look underneath and I can see 2 thin pipes running from what looks like some sort of small radiator under the rear bumper (not sure what this is and dont see it in the haynes manual), these 2 pipes run round the side of the fuel tank (passing above the filler neck) and as the start to curl round to the front end of the tank, one of the pipes just ends and this is where the fluid is leaking from, the other pipe continues down the car...to somehere and seems fine.

Anybody know where this broken pipe should be going? Or what this radiator like thing is under the rear bumper? Car is running fine but I can see some damp patches around this broken pipe which makes me think it is dripping when parked up but may be spurting out when I'm actually driving.

 

The pipework comes from a pump on the diff, runs down the side of the fuel tank to the oil cooler located under the rear bumper, the diff contains a stat and pump when the oil in the diff gets too hot it is circulated through the cooler.

Nothing to do with the fuel system at all bud, should be fine as long as you're not drifting ;-)

The pipework comes from a pump on the diff, runs down the side of the fuel tank to the oil cooler located under the rear bumper, the diff contains a stat and pump when the oil in the diff gets too hot it is circulated through the cooler.

Nothing to do with the fuel system at all bud, should be fine as long as you're not drifting ;-)

 

Originally posted 8 years ago - I'm sure he's managed to either fix it or scrap the car by now. ;)

Likely scraped.

 

Originally posted 8 years ago - I'm sure he's managed to either fix it or scrap the car by now. ;)