Seriously over Fuelling, Fuel Leaking Out From Underneath!
Discussion
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Hi guys, there is a link above of my previous post from Saturday regaring the hissy fit that my chim has thrown now. This has developed further now though from where it was. What started as a lumpy idle and a smell of fuel is now a pretty much non existant idle, when revved a massive amount of smoke from the exhaust and the stench of fuel is massive. I noticed that the fuel was dripping out from the exhaust manifold on the ns, which has a gasket gone and is on the list to be done at the mo anyway. But the fuel is literally dripping out of the bottom of the car, so obviously I turned it off pretty sharpish and pushed it into the garage.
Is there a way that an injector can get stuck open and just keep pouring fuel in? That's what it seems like, as if it is just chucking it in and obviously flooding it to death. It was totally fine for a long drive just before this, very strange.
The car is booked in for a 12k service at TVR Power in a couple of weeks, so if I can't sort this I will have to get it trailored there now!
Please somebody reply with a nice easy fix of "change a little sensor or something" I am cursing the thing at the minute - needless to say the grief I'm getting at work with the old unreliable TVR jokes is just awful haha!
Hi guys, there is a link above of my previous post from Saturday regaring the hissy fit that my chim has thrown now. This has developed further now though from where it was. What started as a lumpy idle and a smell of fuel is now a pretty much non existant idle, when revved a massive amount of smoke from the exhaust and the stench of fuel is massive. I noticed that the fuel was dripping out from the exhaust manifold on the ns, which has a gasket gone and is on the list to be done at the mo anyway. But the fuel is literally dripping out of the bottom of the car, so obviously I turned it off pretty sharpish and pushed it into the garage.
Is there a way that an injector can get stuck open and just keep pouring fuel in? That's what it seems like, as if it is just chucking it in and obviously flooding it to death. It was totally fine for a long drive just before this, very strange.
The car is booked in for a 12k service at TVR Power in a couple of weeks, so if I can't sort this I will have to get it trailored there now!
Please somebody reply with a nice easy fix of "change a little sensor or something" I am cursing the thing at the minute - needless to say the grief I'm getting at work with the old unreliable TVR jokes is just awful haha!
Thanks for the replies guys - I don't think it's a fuel hose as the dripping is from the ns front around the exhaust manifold area, near the power steering pump. As for running on all cylinders, the last time I started it up it would ardly run at all so I just turned it off quick.
I do have the gasket gone on the ns manifold and it looks like to me that where it is flooding fuel in and obviously shoving loads of unburnt down the exhaust that is actually dripping out of the manifold at the front near the ps pump, I am assuming where the gasket is blown it's coming through there?
I have looked up around the injector area and can't see any signs of a leak up there, so that's why I had sort of made the conclusion that an or all of the injectors had stayed open and just kept pouring it in?
I have googled it loads and found various causes and posts etc but a lot of stuff about ecu faults or wiring faults.
How the hell do you diagnose this if it's in a position where you can't really start it up?
I do have the gasket gone on the ns manifold and it looks like to me that where it is flooding fuel in and obviously shoving loads of unburnt down the exhaust that is actually dripping out of the manifold at the front near the ps pump, I am assuming where the gasket is blown it's coming through there?
I have looked up around the injector area and can't see any signs of a leak up there, so that's why I had sort of made the conclusion that an or all of the injectors had stayed open and just kept pouring it in?
I have googled it loads and found various causes and posts etc but a lot of stuff about ecu faults or wiring faults.
How the hell do you diagnose this if it's in a position where you can't really start it up?
Just spoke to Jason at TVR Power where the car is booked in for it's 12k service in a couple of weeks, totally top guy and really helpfull.
He thinks it definately sounds like the injectors sticking on and suggested that there is a section of wiring loom at the back of the engine that they have seen rub through many times, which would cause the short to cause the injectors to stay open.
Made the decision that I am leaving it for them to sort out and am going to get it recovered into them as soon as I can.
He thinks it definately sounds like the injectors sticking on and suggested that there is a section of wiring loom at the back of the engine that they have seen rub through many times, which would cause the short to cause the injectors to stay open.
Made the decision that I am leaving it for them to sort out and am going to get it recovered into them as soon as I can.
Adrian@ said:
Did you get around to checking the dipstick for petrol in the oil...as I had said the other post...IMHO, very wise to get a man who can.
Adrian@
I haven't to be honest, but it's having the 12k service when it goes in to powers so it will all be done then anyway inc new plugs which I am assuming it will definately need now!Adrian@
Update.... Paul (Rugbyfester on here) kindly popped over and plugged his ecu mate into the old girl and it threw up ecu temp sensor or wiring fault. We swapped the sensor and still the same. When I had spoke to Jason at Powers earlier the first thing he said was also wiring and more specificly he had seen some wiring chafe through before that had shorted the injector circuit or something and made them over fuel.
It basically seems like the ecu thinks it is too lean and so is chucking more fuel at it to richen it up and in turn is seriously flooding it in the process.
Looking at transportation companies now to get it to Jason and the boys.
It basically seems like the ecu thinks it is too lean and so is chucking more fuel at it to richen it up and in turn is seriously flooding it in the process.
Looking at transportation companies now to get it to Jason and the boys.
kev b said:
I'm a bit late to the party but I have seen this happen recently on a BMW, the cause was trapped /chafed wires which caused all the injectors to spray constantly, hydraulically locking the engine and doing a lot of damage.
IT sounds like your guy has his finger on the pulse, I would take out the plugs at least, don't smoke whilst you're doing it either.
when you say hydraulically locking the engine and doing a lot of damage, did it happen to the beemer whilst it was on the move then?IT sounds like your guy has his finger on the pulse, I would take out the plugs at least, don't smoke whilst you're doing it either.
kev b said:
I'm a bit late to the party but I have seen this happen recently on a BMW, the cause was trapped /chafed wires which caused all the injectors to spray constantly, hydraulically locking the engine and doing a lot of damage.
IT sounds like your guy has his finger on the pulse, I would take out the plugs at least, don't smoke whilst you're doing it either.
when you say hydraulically locking the engine and doing a lot of damage, did it happen to the beemer whilst it was on the move then?IT sounds like your guy has his finger on the pulse, I would take out the plugs at least, don't smoke whilst you're doing it either.
QBee said:
I had hydraulic lock on a Renault many years ago - drove through some deep water, not realising that the air intake elephant trunk not only went down to bumper height and then back up again, but 160,000 miles of motoring on mainly country roads had pebble-dashed said trunk, so that there was a huge hole 6 inches above the road. Car sucked in water, tried to compress it, cracked two cylinder liners. Result, plenty of suck bang and blow, no squeeze = new car required.
I guess you can do the same thing with unburnt fuel - flood the engine with liquid and then try to compress it. From your description you turned the engine off in time to save it, but no way are you going to attempt to drive it to TVR Power.
No way, it's all booked in to be collected on Thursday morning and delivered to Power, so I will keep all you guys updated with progress as I hear anything, cheers.I guess you can do the same thing with unburnt fuel - flood the engine with liquid and then try to compress it. From your description you turned the engine off in time to save it, but no way are you going to attempt to drive it to TVR Power.
Right guys, time for an update for all those that are interested. I spoke to Jason at powers on Friday and he had it all running sweet. It was indeed exactly wheat he thought it was originally, which was a section of wire that had rubbed through down the back of the engine between that and the bulkhead. They have replaced this section along with another bit he said looked a bit suspect and could probs in the future and for a very reasonable price I have to add.
He said that this had indeed caused all the injectors to stay open every time the ignition was on.
Now they are completing the 12k service and also removing both manifolds, cutting open, removing pre cats and welding back together then fitted back up with new gaskets obviously.
Should all be ready for wed / thurs and I can't wait to have it all spot on and sounding even better.
He said that this had indeed caused all the injectors to stay open every time the ignition was on.
Now they are completing the 12k service and also removing both manifolds, cutting open, removing pre cats and welding back together then fitted back up with new gaskets obviously.
Should all be ready for wed / thurs and I can't wait to have it all spot on and sounding even better.
Edited by mattgtd on Monday 28th July 13:15
Rugbyfester said:
Excellent news Matt was getting worried when we were looking at it that evening, thoughts were not pretty.
Cheers Paul, I'm collecting it tomorrow and according to Jason earlier the decatting has all gone really well with no manifold bolts snapping or anything thank god, so it's all good now!Looking forward to Tvr at the palace at the end of the month now!
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