Hey all I've had another setback in my quest to resurrect my zed (early TT). This time I and a mate were inspecting the solder joints on a suspect injector connector. It reseated ok and seems to be working, BUT then when I turned the car over and eventually got it idling, it sprang a fairly serious fuel leak. It seems to come from around the passenger's side fuel pressure regulator. The hoses aren't all that old, as I put in new efi hoses when I did the plenum pull a few years ago. Could the leak be coming from the fpr itself? I thought what might happen when they die is that the valve inside it goes, but could it physically be leaking from the body of it or is it more likely to be one of the hoses has a split I can't see?
Highly unlikely. More likely the hoses have split or you missed a hose clamp being tightened. Definitely need to pull that out again.
I've never seen one go like that... Could also be a pinched o-ring if you had the injectors out of the rail.
bloody oath when the diaphrams go in the fuel pressure reg or the dampner they will piss fuel out the vacuum port !!! change the leaking item out asap !!! you run the risk of destroying your engine ... like miksta.. fuel will pool into the plenum and can cause a giant hydrolock/ engine explosion if there is enough
I had an FPR leak once, but upon removal it looked like some monkey scored the outlet pipe with some kind of tool. It was a slow weep though, certainly not a fountain of fuel.
I've had a cracked reg, so yeah it could be a leak from the body of the regulator. Should be easy to pick up a second hand one and swap it out. Or better yet borrow an ok one and test fit.
thanks, I reckon I will pull it out and start from there. I did the plenum pull some time back, and replaced all o-rings - *reasonably* sure I did ok on that score because I put a few thousand k's on it. It's just that it's been sitting for some years now, I've turned it over and driven it round short distances and this is the first time it's been p--ing out fuel. If I can't see obvious hose leaks I may just put a new reg in, no sense taking a chance on a second hand part only to have the same problem. The amount of fuel that came out would have been a bloody fire hazard.
Turns out it was just a loose hose clamp... weird. But anyways, pulled everything apart, realised one of the clamps had come loose (perhaps over time the hose itself compressed under the clamp, reducing the seal?) so tightened it up and all good. Then topped it off with some new 98 octane, took it off to the local garage for a rego inspection. Couple of minor things, but at the end of the day the z32 is now rego'd and being driven as a daily (my 260z decided to crap itself... oh well good timing!) There was initially a very serious tailshaft vibration at 60kph, (it's been sitting in the back yard for 3 years, so the centre bearing rubber is probably pretty hard) but I reinflated the tires and after driving around a bit it's now only when the car is cold and barely noticeable when warm. In all honesty it's running better than it ever has. I've been used to driving a 2.6 with twin HKS2530's in my GTR, so the vg30dett, while torquey, becomes a bit flat up top. But on the plus side, having a friendly, single-plate clutch, speed-sensitive power steering, a working climate control and only *slightly* ridiculously hard suspension has been a pleasure to drive. I might give her a minor service this weekend, just change the oil and filter and a few little things. Anyway, it's a gunmetal grey z32 TT 2+2, with a single exhaust and no rear spoiler. Dark grey advan tri-spoke 17's. Throw out the zed salute if you see me around. Andrew
I get that when cold too, the tailshaft vibrates a bit, but once warmed up it goes away. If the centre bearing flogs out again ill get a single piece.
Yep, all new hoses need re-tightening even more so new hoses, as they bed down and shrink into their normal size after a few engine cold/hot cycles. That's why the factory abba clamps are best, they provide the best chance of not loosening in their own. Combine shitty, cheap worm clamps and new fuel hose and a leak is almost certain over time. Not to mention the possibility of an insurance claim on fire damage if the inspector notices the non-stock clamps...
